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User Manual: Mackie SRM350 V3 to the manual

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SRM350v3 and SRM450v3
Powered Loudspeakers
OWNER’S MANUAL

SRM350v3 and SRM450v3 Powered Loudspeakers

Important Safety Instructions
1.
2.
3.
4.
5.
6.
7.

Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug.
A polarized plug has two blades with one wider than the other. A grounding-type
plug has two blades and a third grounding prong. The wide blade or the third prong
are provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specified PORTABLE CART
WARNING
by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
15. This apparatus shall not be exposed to dripping or splashing, and no object filled
with liquids, such as vases or beer glasses, shall be placed on the apparatus.
16. Do not overload wall outlets and extension cords as this can result in a risk of fire
or electric shock.
17. This apparatus has been designed with Class-I construction and must be
connected to a mains socket outlet with a protective earthing connection
(the third grounding prong).
18. This apparatus has been equipped with a rocker-style AC mains power switch. This
switch is located on the rear panel and should remain readily accessible to the user.
19. The MAINS plug or an appliance coupler is used as the disconnect device,
so the disconnect device shall remain readily operable.
CAUTION
RISK OF ELECTRIC SHOCK! DO NOT OPEN!
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED PERSONNEL.

The lightning flash with arrowhead symbol within
an equilateral triangle is intended to alert the user
to the prescence of uninsulated “dangerous voltage”
within the product’s enclosure, that may be of significant
magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user of the prescence of important
operating and maintaining (servicing) instructions in the
literature accompanying the appliance.

WARNING — To reduce the risk of fire or electric
shock, do not expose this apparatus to rain or moisture.
CAUTION — To prevent electric shock hazard, do not
connect to mains power supply while grille is removed.

20. NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications to this device not expressly approved by
LOUD Technologies Inc. could void the user's authority to operate the equipment
under FCC rules.
21. This apparatus does not exceed the Class A/Class B (whichever is applicable)
limits for radio noise emissions from digital apparatus as set out in the radio
interference regulations of the Canadian Department of Communications.
ATTENTION — Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant las limites applicables aux appareils numériques de class A/de class B
(selon le cas) prescrites dans le réglement sur le brouillage radioélectrique édicté
par les ministere des communications du Canada.
22. Exposure to extremely high noise levels may cause permanent hearing loss.
Individuals vary considerably in susceptibility to noise-induced hearing loss, but
nearly everyone will lose some hearing if exposed to sufficiently intense noise
for a period of time. The U.S. Government’s Occupational Safety and Health
Administration (OSHA) has specified the permissible noise level exposures shown
in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result
in some hearing loss. To ensure against potentially dangerous exposure to high
sound pressure levels, it is recommended that all persons exposed to equipment
capable of producing high sound pressure levels use hearing protectors while the
equipment is in operation. Ear plugs or protectors in the ear canals or over the
ears must be worn when operating the equipment in order to prevent permanent
hearing loss if exposure is in excess of the limits set forth here:
Duration,
per day in
hours

8
6
4
3
2
1.5
1
0.5
0.25 or less

Sound Level dBA,
Slow Response

Typical Example

90
92
95
97
100
102
105
110
115

Duo in small club
Subway Train
Very loud classical music
Greg screaming at Troy about deadlines
Loudest parts at a rock concert

Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
Apparatet må tilkoples jordet stikkontakt.
Apparaten skall anslutas till jordat uttag.

Correct disposal of this product: This symbol indicates that this product should not be disposed of with your household
waste, according to the WEEE directive (2012/19/EU) and your national law. This product should be handed over to
an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type
of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances
that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will
contribute to the effective usage of natural resources. For more information about where you can drop off your waste
equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service.

SRM350v3 and SRM450v3 Powered Loudspeakers

Features

Important Safety Instructions................................... 2
Contents.................................................................. 3
Features.................................................................. 3
Introduction............................................................. 4
How To Use This Manual.......................................... 4
Getting Started........................................................ 4
Things To Remember................................................. 4
Hookup Diagrams..................................................... 5
SRMv3 Loudspeaker: Rear Panel Features................. 9
1. Power Connection.......................................... 9
2. Power Switch................................................ 9
3. XLR and 1/4" Combo Inputs........................... 9
4. Gain Knobs.................................................. 10
5. RCA Inputs [Channel 2 Only]........................ 10
6. Thru Output................................................. 10
7. Ch 1/Mix Switch [Thru Output].................... 11
8. Speaker Mode............................................. 11
9. Feedback desTROYer.................................... 11
10. Main LED Switch / Limit LED...................... 11
11. Breakfast Mode......................................... 11
Smart Protect........................................................ 12
Limiting........................................................... 12
Overexcursion Protection................................. 12
Thermal Protection........................................... 12
AC Power.............................................................. 12
Care and Maintenance............................................ 12
Placement.............................................................. 13
Room Acoustics................................................ 14

• 1000W system power paired with custom
transducers deliver gig-level volumes with
room to spare
• 10" high-output LF driver [SRM350v3]
• 12" high-output LF driver [SRM450v3]
• 1.4" titanium dome compression driver
• High-Definition Audio Processing for professional
sound with unmatched clarity
• Patented acoustic correction developed with
touring geniuses at EAW®
• Precision 2-way crossover
• Driver time alignment and phase correction

Owner’s Manual

Contents

• Quick one-button Speaker Mode selection
for application-specific voicing (PA, DJ, Monitor
and Soloist)
• Effortlessly eliminate nasty feedback with
one-button automatic Feedback Destroyer
• Integrated 2-channel mixer featuring dual
Wide-Z™ inputs
• Handles anything from mics to guitars to
mixers with a single twist of the gain knob
• Includes stereo RCA inputs for easy connection
to music source
• Perfect for the singer/songwriter,
plug in and leave the mixer at home
• Smart Protect™ DSP kicks in to protect
your investment when things get pushed
a little too hard
• Monitor-specific angle and voicing mode
perfect for cutting through on stage
• Flyable for permanent install

Rigging ................................................................ 15
Rigging Design Practices................................... 15
Rigging Hardware and Accessories.................... 15
Rigging Notes.................................................. 15
SRMv3 Inserts & Fly Points.............................. 15
Appendix A: Service Information............................. 16
Appendix B: Connections ........................................ 17
Appendix C: Technical Information........................... 18
SRMv3 Loudspeaker Dimensions....................... 20
SRMv3 Loudspeaker Frequency Responses........ 21
SRMv3 Loudspeaker Block Diagram.................. 22
Limited Warranty................................................... 23

• Proven highly-durable, portable design
• 23.0 lb / 10.4 kg [SRM350v3]
• 37.0 lb / 16.8 kg [SRM450v3]

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Part No. SW1051 Rev. A 03/14
©2014 LOUD Technologies Inc. All Rights Reserved.

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

Introduction

Getting Started

The most widely used portable speakers ever;
the all-new SRM450 and SRM350 deliver the
unparalleled ease-of-use, professional sound quality
and indestructible portability that made SRM a live
sound legend. Now packed with 1000W of power, the
widest selection of truly useful sound-enhancing DSP
and setup-friendly audio tools, SRM is ready for your
high-output application.

The following steps will help you set up the
loudspeakers quickly.

SRMs feature modern tools like application-specific
speaker modes and an automatic feedback destroyer,
each with a single-button interface that gets you
optimized performance in just seconds. And with
the integrated 2-channel mixer, you can easily mix
multiple sources.
Only SRMs deliver this level of power and sound
quality in such an indestructible, portable package.

1. Make all initial connections with the power
switches OFF on all equipment. Make sure the master
volume, level, or gain controls are all the way down.
2. Connect the line-level outputs from the mixing
console (or other signal source) to the inputs on the
rear panel of the SRM350v3 / SRM450v3 loudspeakers.
3. Make sure that the loudspeaker’s gain knobs are set
to (or near) “line”.
4. Connect the supplied AC power cords to the
IEC sockets on the rear panel of each loudspeaker.
Plug the other end into an AC outlet properly configured
with the correct voltage as indicated below the IEC
socket.
5. Turn the mixer (or other signal source) on.

How to Use This Manual:
After this introduction, a getting started guide
will help you get things set up fast. The hookup
diagrams show some typical setups, while the
remaining sections provide details of the SRM350v3
and SRM450v3 loudspeakers.
This icon marks information that is critically
important or unique to the loudspeakers.
For your own good, read and remember them.

6. Turn the loudspeakers on.
7. Start the signal source and raise the mixer’s
main L/R fader up until audio may be heard
through the loudspeakers.
8. Adjust the master volume of the mixer to a
comfortably loud listening level.
9. Read the rest of this manual to learn how to set the
speaker mode and feedback destroyer to really dial in a
sound for the venue.

Things to Remember:
• Never listen to loud music for prolonged periods.
Please see the Safety Instructions on page 2 for
information on hearing protection.

Please write your serial number here for future
reference (i.e., insurance claims, tech support,
return authorization, make dad proud, etc.)

Purchased at:

Date of purchase:

• As a general guide, SRMv3 loudspeakers should
be turned on last, after any mixer or other signal
source. As such, they should also be turned off
first. This will reduce the possibility of any turn-on
or turn-off thumps and other noises generated
by any upstream equipment from coming out of
the speakers.
• Save the shipping boxes and packing materials!
You may need them someday. Besides, the
cats will love playing in them and jumping out at
you unexpectedly. Remember to pretend like you
are surprised!
• Save your sales receipt in a safe place.

SRM350v3 and SRM450v3 Powered Loudspeakers

Owner’s Manual

Hookup Diagrams
SPEAKER
MODE

FEEDBACK
DESTROYER

MAIN
LIMIT

SPEAKER
MODE

FEEDBACK
DESTROYER
1

SOLO

SIG/OL

GAIN

LOGO

HOLD TO
CLEAR

ON
OFF

SIG/OL

GAIN

SOLO

MIC

MAX

LINE

ON
OFF

LOGO

HOLD TO
CLEAR

LINE

OFF

DJ
MON

MAIN
LIMIT

MON

MIC

OFF

MAX

CH 1
MIX

SIG/OL

GAIN

LINE

MIC

OFF

SIG/OL

MAX

LINE

MIC

OFF

MAX

SPEAKER
MODE

FEEDBACK
DESTROYER

MAIN
LIMIT

PA
POWER

MON

ON
OFF

OFF

SOLO

LOGO

HOLD TO
CLEAR

POWER CONSUMPTION 160W

SIG/OL

GAIN

U
MIC

OFF

SIG/OL

GAIN

LINE

MAX

LINE

MIC

OFF

MAX

UE- -RISQUE

NUMB
ER

SERIAL

ATTENRISK DO NOT
OF
OPEN
ELECTRIC
TION:

1kHz
100Hz
20Hz

CHOCNE PAS SHOCK
OUVRIR
ELECTRIQ

WARN

ES
MOD

1kHz

KER
SPEA
100Hz

SOLO

MON

20Hz

R
ON

MIC

HOLD
CLEARTO

MAX
U

GAIN SIG/OL

FEED
DEST BACK
ROYE

LINE
MIC

MAX
U

SPEA
MODKER
E

GAIN SIG/OL

MON

SOLO

POWE
R

20kHz

SHOCK, ING:
DO NOT TO
MOISTURE
AVERTIS. DO EXPOSEREDUCE THE
NOT THIS RISK
OU DE SEMENT
REMOVE EQUIPMENOF
PLUIE CHOC
FIRE
OU À ÉLECTRIQU: POUR COVER. T TO OR ELECTRIC
RAIN
L'HUMIDIT E, RÉDUIRE
NE
LES RISQUES OR
É. NE PAS EXPOSER
PAS
RETIRER CET D'INCENDI
APPAREIL
REVISILE COUVERCL À E
E. LA

20kHz

ON
OFF

LOGO

LIMIT

MAIN

CH 1
MIX

SRMv3 loudspeakers are the perfect tool for singer-songwriters touring the local coffee shops.
Bring your favorite axe and mic, SRMv3 loudspeakers and cables and power cords.
In this example, a dynamic microphone is connected to the channel 1 input of an SRM350v3
loudspeaker, used for monitoring purposes. Be sure that the gain knob is set to “mic” in order to
get an extra boost for the mic. If anything other than a microphone is attached to a channel input,
make sure the gain knob is set to anything other than “mic” [“line” is a safe bet]. From there,
adjust the gain as described on page 10.
Now grab your axe and plug it directly into the channel 2 input. Or if you use effects, connect
the guitar to the effects input and another cable from the effects output to the channel 2 input.
Set the channel two gain knob to “line”.
An SRM450v3 loudspeaker will be used for the main PA. Simply connect a cable from the SRM350v3
loudspeaker’s THRU jack to the SRM450v3 loudspeaker’s channel 1 input [gain knob set to “line”].
Also, make sure the Ch 1/Mix switch is down on the main SRM350v3, as well, so a mix of the
vocals and guitar is relayed to the PA.
For the output, you will want to set a speaker mode, described in detail on page 11. For this type of
setup, PA works well for the main SRM450v3. However, don’t count out the soloist mode! It has a nice
low cut and a brilliant high end. Select the monitor mode for the SRM350v3 monitor. Lastly, you can ring
out before you play, utilizing the SRMv3’s feedback destroyer [page 11] or just let it kill the feedback
while playing.

Small Coffee Shop

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

Hookup Diagrams continued...
SPEAKER
MODE

FEEDBACK
DESTROYER

MAIN
LIMIT

SPEAKER
MODE

FEEDBACK
DESTROYER

MON

SOLO

MAIN

ON
OFF

LOGO

HOLD TO
CLEAR

SPEAKER
MODE

FEEDBACK
DESTROYER

LIMIT
PA

SIG/OL

GAIN

MAX

LINE

SIG/OL

MIC

OFF

MAX

CH 1
MIX

GAIN

LINE

MIC

OFF

MIC

3/4

LINE/HI-Z IN 1

LINE IN 2

LINE IN 3

L
BAL /
UNBAL

LINE IN 5

INSERT

IC GAIN
M

POWER CONSUMPTION 160W

U
-20dB

IC GAIN
M

LEVEL
SET

U
-20dB

+50
+30dB

GAIN

MON
OO

MON

+15
U

FX
OO

+15

MON
OO

+15
U

+15

PAN

+15

PAN

SRM
550

5
POWER

15
125

LOW
80Hz

48V
PHANTOM
POWER

HI
12kHz

+15

PAN

250

500

MAIN MIX
MON

MID
2.5kHz

AUX

+15
U

+15

PAN

15
10

-15 +15
U

-15 +15

MON
OO

15
10

MAIN
METERS
0dB=0dBu
OL
15
10
6
3
0
2
4
7
10
20
30

USB

FX PRESETS

01 BRIGHT ROOM
02 WARM LOUNGE
03 SMALL STAGE
04 WARM THEATER
05 WARM HALL
06 CONCERT HALL
07 PLATE REVERB
08 CATHEDRAL
09 CHORUS
10 CHORUS + REV
11 DOUBLER
12 TAPE SLAP
13 DELAY 1 (300ms)
14 DELAY 2 (380ms)
15 DELAY 3 (480ms)
16 REVERB + DLY (250ms)

PAN

EQ IN
BYPASS

-15 +15
U
LOW
80Hz

+15
U

PHONES

HI
12kHz

MID
2.5kHz

AUX

MON

+15
U

GAIN

OFF

FOOTSWITCH

R
MAIN OUT

POWER CONSUMPTION 160W

LOW CUT
100Hz

-15 +15

AUX

BAL /
UNBAL

FX SEND

STEREO GRAPHIC EQ

-20 +20

-15 +15
U
LOW
80Hz

-15 +15

POWER

L
BAL /
UNBAL

MON SEND

R
ST RETURN

LEVEL
SET

-15 +15
U
MID
2.5kHz

-15 +15
U
LOW
80Hz

AUX

MAX

ON
BAL /
UNBAL

BAL /
UNBAL

LINE IN 8

GAIN

HI
12kHz
-15 +15
U

MID
2.5kHz

-15 +15

MAX

CH 1
MIX

PROFESSIONAL MIC/LINE MIXER WITH FX

BAL /
UNBAL

+50

HI
12kHz
-15 +15
U

-15 +15
U
LOW
80Hz

AUX

LOW CUT
100 Hz

HI
12kHz

MID
2.5kHz

-15 +15

C GAIN
MI

LEVEL
SET

+50

OFF

(MONO)

LINE IN 6

GAIN

LOW CUT
100 Hz

GAIN

LOW CUT
100 Hz

-15 +15
U

C GAIN
MI

LEVEL
SET

+50
+30dB

MIC

TAPE
OUT

(MONO)

LINE IN 7

LINE IN 4

MAX

LINE

7/8

(MONO)

L
BAL /
UNBAL

ON
OFF

U
MIC

5/6

(MONO)

SIG/OL

GAIN

LOGO

HOLD TO
CLEAR

SIG/OL

GAIN

LINE

(UNBALANCED)

2
BAL /
UNBAL

OFF

MIC

OFF

LINE
HI-Z

OFF

LINE

MAX

TAPE
IN

POWER

SIG/OL

SOLO

U
MIC

LOGO

HOLD TO
CLEAR

OFF

MON

SIG/OL

GAIN

MAIN
LIMIT

ON
OFF

MON
SOLO

LINE

PRESETS

+20

INPUT LEVEL

SRM
650
VAR

MUTE

USB THRU

BREAK

(MUTES ALL CHANNELS)

MUTE

dB
10

MUTE

dB
10

5/6

+15

FX MASTER

MUTE

3/4

dB
10

+15

dB
10

ST RTN

MAX

PHONES

FX TO MON

dB
10

FX RTN

dB
10

+20

TAPE LEVEL

MAIN

MON

MUTE
OL

7/8

dB
10

40
50
60

SRM
550
SRM
650
VAR

POWER CONSUMPTION 200W

In this example, an SRM1850 subwoofer and additional SRM450v3 loudspeaker have been added
to the mix, giving our sound system some extra beef. It is a perfect setup for a small club.
Here, the L/R outputs of a ProFX8 mixer are connected directly to the channel A and B inputs of a single
SRM1850 subwoofer. Set the gain to “U”.
The channel A and B high pass outputs of the SRM1850 subwoofer are connected directly to the channel
1 inputs of each SRM450v3 loudspeaker. Be sure that the gain knob on each is set to “line”. Select the
VAR high pass mode on the SRM1850 and turn the adjacent knob to120 Hz for a matched system.
SRMv3 loudspeakers are also perfect for use as stage monitors. Simply connect a cable from each aux
send to the channel 1 input of each SRMv3 loudspeaker used as a monitor. It’s a good idea to use the
Feedback Destroyer here.
For the output, you will want to set a speaker mode, described in detail on page 11. For this type
of setup, we recommend selecting the PA speaker mode for live sound on your SRMv3 loudspeakers.
If using any SRMv3 loudspeakers as monitors, select the monitor speaker mode.

Small Club System

SRM350v3 and SRM450v3 Powered Loudspeakers

To next
SRMv3
loudspeaker
input
SPEAKER
MODE

FEEDBACK
DESTROYER

SPEAKER
MODE

MAIN

FEEDBACK
DESTROYER

MON

SOLO

SIG/OL

GAIN

MON

SOLO

MIC

SIG/OL

MAX

OFF

MIC

OFF

MAX

MON

SOLO

MAX

OFF

SIG/OL

MIC

OFF

MAX

CH 1
MIX

MON

SOLO

MAX

OFF

SIG/OL

MIC

OFF

MAX

CH 1
MIX

LINE

MIC

ON
OFF

LOGO

HOLD TO
CLEAR

GAIN

LINE

MAIN

SIG/OL

GAIN

LINE

MIC

LOGO

HOLD TO
CLEAR

GAIN

LINE

FEEDBACK
DESTROYER
LIMIT

ON
OFF

SIG/OL

GAIN

LINE

MIC

SIG/OL

GAIN

LINE

LOGO

HOLD TO
CLEAR

SPEAKER
MODE

MAIN
LIMIT

ON
OFF

GAIN

LINE

OFF

LOGO

HOLD TO
CLEAR

FEEDBACK
DESTROYER

LIMIT
ON
OFF

SPEAKER
MODE

MAIN

LIMIT
PA

To next
SRMv3
loudspeaker
input

Main
Outs

LINE

MAX

MIC

OFF

MAX

CH 1
MIX

Owner’s Manual

Hookup Diagrams continued...

DL806 Mixer

To next
SRMv3
loudspeaker
input
SPEAKER
MODE

FEEDBACK
DESTROYER

SPEAKER
MODE

MAIN

FEEDBACK
DESTROYER

LIMIT
PA

MON

SOLO

SIG/OL

GAIN

MON

SOLO

MIC

MAX

OFF

SIG/OL

MIC

OFF

MAX

CH 1
MIX

MON

SOLO

MAX

MIC

OFF

MAX

CH 1
MIX

LOGO

SIG/OL

MON

SOLO

MAX

OFF

SIG/OL

MIC

OFF

MAX

CH 1
MIX

LINE

MIC

ON
OFF

LOGO

HOLD TO
CLEAR

GAIN

LINE

MAIN

SIG/OL

GAIN

LINE

MIC

OFF

FEEDBACK
DESTROYER
LIMIT

ON
OFF

HOLD TO
CLEAR

GAIN

LINE

SPEAKER
MODE

MAIN

SIG/OL

GAIN

LINE

MIC

LOGO

HOLD TO
CLEAR

GAIN

LINE

FEEDBACK
DESTROYER
LIMIT

ON
OFF

SIG/OL

GAIN

LINE

OFF

LOGO

HOLD TO
CLEAR

SPEAKER
MODE

MAIN
LIMIT

ON
OFF

MAX

LINE

MIC

OFF

MAX

CH 1
MIX

SRMv3 loudspeakers may be daisy-chained via the male XLR connector labeled “THRU”. Simply plug the
signal source (i.e., mixer output) into the input jack(s), and patch that loudspeaker’s THRU jack to the
next loudspeaker’s input jack, and so on, daisy-chaining multiple SRMv3 loudspeakers. Make sure that
the Ch 1 / Mix button is OUT [Ch 1]. See above for visual representations of daisy-chaining.

Daisy-Chaining Multiple SRMv3 Loudspeakers

Owner’s Manual

SPEAKER
MODE

FEEDBACK
DESTROYER

SPEAKER
MODE

MAIN

FEEDBACK
DESTROYER

LIMIT
PA

MON

SOLO

SIG/OL

GAIN

U
MIC

MON

3
4

MIC

SIG/OL

OFF

FEEDBACK
DESTROYER

MAX

MON

LOGO

SOLO

SIG/OL

GAIN

LINE

MIC

MAX

OFF

MAX

SPEAKER
MODE

MAIN

FEEDBACK
DESTROYER

SIG/OL

GAIN

SIG/OL

U
MIC

OFF

CH 1
MIX

LOGO

HOLD TO
CLEAR

GAIN

LINE

MIC

MAX

ON
OFF

SIG/OL

GAIN
U

LINE

OFF

SOLO

U
MIC

MAX

DJ
MON
LOGO

HOLD TO
CLEAR

MAIN
LIMIT

ON
OFF

SIG/OL

GAIN

OFF

MAX

LINE

MIC

OFF

MAX

CH 1
MIX

POWER

POWER
ON

OFF

-RISQUE
E-

NUMBE
R

SERIAL

CHOCNE PAS SHOCK
OUVRIR
ELECTRIQU

ATTENTRISK DO NOT
OF
OPEN
ION: ELECTRIC

100Hz

WARNIN

1kHz

MODE
S

1kHz

SPEAK
ER
100Hz

SOLO

MON

20Hz

POWER

20kHz

SHOCK,
DO NOTG: TO
MOISTURE.
AVERTISSEDO EXPOSEREDUCE THE
NOT THIS RISK
OU DE
REMOVE EQUIPMENT
PLUIE CHOC MENT: COVER. OF FIRE
OR
POUR
OU À ÉLECTRIQUE,
L'HUMIDITÉ. RÉDUIRE TO RAIN ELECTRIC
OR
NE PAS LES
NE PAS
EXPOSERRISQUES
RETIRER CET D'INCENDIE
APPAREIL
LE COUVERCLE.
REVISIO
À LA

L
LINE
MIC

MAX
U

SPEAK
MODEER

GAIN SIG/OL

MON

SOLO

20Hz

MAIN

ON
OFF

LOGO

LIMIT

MIC

HOLD
CLEARTO

MAX
U

GAIN SIG/OL

FEEDB
DESTR ACK
OYER
1

DE
-RISQUE
E-

NUMBE
R

SERIAL

CHOCNE PAS SHOCK
OUVRIR
ELECTRIQU

ATTENTRISK DO NOT
OF
OPEN
ION: ELECTRIC

100Hz

WARNIN

1kHz

MODE
S

1kHz

SPEAK
ER
100Hz

SOLO

MON

20Hz

POWER

20kHz

20Hz

MAIN

ON
OFF

LOGO

LIMIT

MIC

HOLD
CLEARTO

MAX
U

GAIN SIG/OL

FEEDB
DESTR ACK
OYER
1

LINE
MIC

MAX
U

SPEAK
MODEER

GAIN SIG/OL

MON

SOLO

POWER CONSUMPTION 160W

SRM
550

SRM
650

VAR

SRM
550

SRM
650

VAR

POWER CONSUMPTION 200W

U
MIC

OFF

MAX

LOGO

HOLD TO
CLEAR

GAIN

LINE

MIC

ON
OFF

LIMIT
PA

MON
SOLO

LINE

MAIN
LIMIT

LINE

OFF

FEEDBACK
DESTROYER

ON
OFF

LINE

MAX

SPEAKER
MODE

HOLD TO
CLEAR

GAIN

U
MIC

OFF

SIG/OL

GAIN

LINE

MAX

SOLO

LINE

OFF

SIG/OL

GAIN

LOGO

HOLD TO
CLEAR

SPEAKER
MODE

MAIN
LIMIT

ON
OFF

SRM350v3 and SRM450v3 Powered Loudspeakers

Hookup Diagrams continued...

POWER CONSUMPTION 200W

Here’s how to set up a large club system. In this example, the L/R outputs of a DL1608 mixer are
connected directly to the channel A inputs of two SRM1850 subwoofers. The channel A full range
outputs of these two SRM1850 subwoofers are connected directly to the channel A inputs of another
set of SRM1850 subwoofers. Talk about beefy low end...and we’ve only connected the subs!
The channel A high pass outputs of the last two SRM1850 subwoofers are connected directly to the
channel 1 inputs of the main pair of SRM450v3 loudspeakers. Be sure that the gain knob on each
is set to “line”. Select the VAR high pass mode on the SRM1850 and turn the adjacent knob to120 Hz
for a matched system.
SRMv3 loudspeakers are also perfect for using as stage monitors. Simply connect a cable from an aux
send to the channel 1 input of an SRM350v3 loudspeaker. Here you will want to set a speaker mode,
described in detail on page 11. Since these are monitors, select the appropriately named monitor
speaker mode.
Select PA speaker mode for the main loudspeakers. You may also turn the feedback eliminator ON
on all four SRMv3 loudspeakers, if desired.

Large Club System

SRM350v3 and SRM450v3 Powered Loudspeakers

SPEAKER
MODE

FEEDBACK
DESTROYER

As a general guide, SRMv3 loudspeakers
should be turned on last, after any mixer
or other signal source. As such, they should
also be turned off first. This will reduce the possibility
of any turn-on or turn-off thumps and other noises
generated by any upstream equipment from coming
out of the speakers.

MAIN
LIMIT

MON

SOLO

SIG/OL

GAIN

LINE

MIC

OFF

LED

HOLD TO
CLEAR

SIG/OL

GAIN

ON
OFF

MAX

LINE

MIC

OFF

MAX

CH 1
MIX

3. XLR and 1/4" Combo Inputs

Owner’s Manual

SRM350v3/SRM450v3 Loudspeaker: Rear Panel Features

Both channels feature 1/4" Wide-Z™ inputs with
combo jacks that may accept balanced/unbalanced XLR
and 1/4" connections. The gain range of the Wide-Z
inputs may handle anything from an instrument or mic
level to a line-level signal such as from a mixer. Simply
connect an XLR, TRS or TS connector into the channel
and adjust the gain accordingly.
Please be aware of the position of the gain
knob [4].

POWER
ON

OFF

1
1. Power Connection
This is a standard 3-prong IEC power connector.
Connect the detachable power cord (included in
the packaging with the loudspeaker) to the power
receptacle, and plug the other end of the power
cord into an AC outlet.
Make sure that the AC power is matched to
the AC power indicated on the rear panel
(below the IEC receptacle).
Disconnecting the plug’s ground pin is
dangerous. Don’t do it!

2. Power Switch
Press the top of this rocker switch inwards to turn
on the loudspeaker. The front panel LED will glow
with happiness...or at least it will if the loudspeaker is
plugged into a suitable live AC mains supply and the
main LED switch [10] is disengaged.
Press the bottom of this rocker switch inwards to turn
off the loudspeaker.

NEVER connect the output of an amplifier
directly to the input of the loudspeaker.
This could damage the input circuitry
of the active loudspeaker.
XLR connectors are wired as follows, according to
standards specified by the AES (Audio Engineering
Society):
Balanced XLR Input Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
2

SHIELD
HOT

COLD

1
3

1
SHIELD
COLD

HOT

Balanced XLR Input Connector

To connect balanced lines to these inputs, use a
1/4" Tip-Ring-Sleeve (TRS) plug. “TRS” stands for
Tip-Ring-Sleeve, the three connection points
available on a stereo 1/4" or balanced phone jack
or plug. TRS jacks and plugs are used for balanced
signals and stereo headphones and are wired as follows
according to standards specified by the AES (Audio
Engineering Society):

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

SRM350v3/SRM450v3 Loudspeaker: Rear Panel Features continued...
MON

SOLO

Balanced 1/4" TRS Connector

SIG/OL

GAIN

RING SLEEVE

LINE

MIC

OFF

SIG/OL

GAIN

Sleeve – Shield (ground)
Tip – Positive (+ or hot)
Ring – Negative (– or cold)

LED

HOLD TO
CLEAR

LINE

MAX

MIC

OFF

MAX

SLEEVE RING TIP

CH 1
MIX

RING

TIP
SLEEVE

Balanced 1/4" TRS Connector
POWER
5. RCA Inputs [Channel 2 Only]
ON

To connect unbalanced lines to these inputs, use a
1/4" mono (TS) phone plug, wired as follows according
to standards specified by the AES (Audio Engineering
Society):

The stereo unbalanced RCA inputs allow you to
play a CD player, iPod®, or other line-level source.
OFF
The RCA jacks accept an unbalanced signal using
standard hi-fi [RCA] hookup cables.

Unbalanced 1/4" TS Connector

They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):

Sleeve – Shield (ground)
Tip – Positive (+ or hot)

Unbalanced RCA Connector
SLEEVE

SLEEVE

TIP

Sleeve – Shield (ground)
Tip – Positive (+ or hot)

TIP
SLEEVE

TIP

SLEEVE

TIP

SLEEVE

Unbalanced 1/4" TS Connector

For more information on these connectors, see
Appendix B on page 17.

Unbalanced RCA Connector

For more information on these connectors, see
Appendix B on page 17.

4. Gain Knobs
The gain knobs adjust the input sensitivity of the
mic, line and/or RCA inputs. This allows signals from
the outside world to be adjusted to run through each
channel at optimal internal operating levels.
There is – dB of gain with the knob fully down
(off), ramping up to 50 dB of gain fully up (max).
The accompanying LED will illuminate green when
the channel’s input signal is present, indicating signal.
It will remain lit so long as there is signal above
–20 dBu present in that channel.
The accompanying LED will illuminate red when the
amplifier in the SRMv3 loudspeaker is near the clipping
point. It is okay if this LED blinks occasionally, because
this means that the transient peaks are just reaching
the maximum output of the amplifiers and you are
getting the most out of your loudspeaker.

6. Thru Output
This is a male XLR-type connector that produces
exactly the same signal that is connected to the
main input jack or a mix of channels 1 and 2. Use it to
daisy-chain several SRM loudspeakers together off
the same signal source(s).
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
Balanced XLR Output Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)

If connecting mixer outputs to loudspeaker
inputs, set the gain knob to 10:00 [“Line”]
for optimal sound and performance.

SHIELD

COLD 3
HOT

1
3

Balanced XLR Output Connector

SRM350v3 and SRM450v3 Powered Loudspeakers

SHIELD
COLD

TIP

HOT

SRM350v3/SRM450v3 Loudspeaker: Rear Panel Features continued...
For more information on these connectors, see
Appendix B on page 17.

7. Ch 1/Mix Switch [Thru Output]
This switch allows you to choose whether only
the channel 1 signal (pre-gain) is sent out to the
next loudspeaker [switch out – Ch 1] or if a mix
of the channel 1 and 2 signals are sent out to the
next loudspeaker [switch in – Mix] (post-gains).

SPEAKER
MODE

FEEDBACK
DESTROYER

MAIN
LIMIT

MON

SOLO

ON
OFF

LED

HOLD TO
CLEAR

BREAKFAST MODE

Bagel with
cream cheese
Biscuits and Gravy
Eggs Benedict
Farmer’s breakfast

Fresh fruit

Bloody Mary

Oatmeal

Coffee

Omelette

Juice

Pancakes /
Waffles

Mimosa

8. Speaker Mode

10. Main LED Switch / Limit LED

Here you are able to change the loudspeaker’s
speaker mode to tailor it to best suit your particular
application. There are four modes: PA, DJ, Monitor and
Soloist. Press the speaker mode button repeatedly until
the LED of the speaker mode you desire is illuminated.
Refer to the Frequency Response graphs on page 21
for further information.

The LED on the front of the SRMv3 loudspeaker
illuminates when this switch is disengaged and
AC power is available at the mains input [1].
Engage the switch if you do not want the front panel
LED to illuminate.

PA Speaker Mode – This mode is full range, but
focuses on mid-range clarity where vocals often reside.
This is the place to start for most sound reinforcement
applications.
DJ Speaker Mode – This mode bumps the lows and
highs with a mild tuck to the mids, perfect for music
playback.
MON(itor) Speaker Mode – This mode features a
low frequency roll-off and a reduction around 2 kHz to
ensure maximum gain before feedback in monitor
applications.
SOLO(ist) Speaker Mode – This mode features
a low frequency roll-off to get rid of unwanted thumps
and adds boost and sparkle to mid-range and high
frequencies. This plug-and-play mode is perfect for
singer-songwriters.

9. Feedback desTROYer:

Owner’s Manual

See page 7 to learn more about daisy-chaining SRMv3
loudspeakers.

SRMv3 loudspeakers have a built-in limiter that
helps to prevent the amplifier outputs from clipping
or overdriving the transducers. The limit indicator
illuminates yellow when the limiter is activated.
It’s okay for it to blink yellow occasionally, but if it
blinks frequently or lights continuously, turn down
the gain knob [4] until it only blinks occasionally.
Excessive limiting may lead to
overheating, which in turn trips the
thermal protect circuitry and interrupts
the performance. See ‘Thermal Protection’ on
page 12 for more information.

11. Breakfast Mode
Breakfast is the most important meal of the day.
Here you are able to order your favorite breakfast
food and drink. Press the breakfast mode buttons
repeatedly until the LEDs of the food and drink you
desire are illuminated. This mode is only available
between 6 am and 11 am at participating SRMv3
loudspeakers.

The multi-band feedback destroyer hunts down
offending feedback frequencies and applies up to four
notch filters automatically to destroy feedback and
maximize gain prior to feedback. This is a great tool
for performers without a dedicated engineer.
The integrated and amazingly accurate Feedback
Destroyer instantly employs up to four incredibly
narrow 1/16th octave filters to locate and eradicate
feedback so you know you can perform fearlessly.
Plus, the entire system is protected by our Smart
Protect™ DSP which kicks in to protect your
investment when things get pushed a little too hard.
Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

Smart Protect

AC Power

There are advanced DSP protection mechanisms
designed into the SRM350v3 and SRM450v3
to safeguard the loudspeakers and amplifiers
from inadvertent damage.

Be sure the SRMv3 loudspeaker is plugged into an
outlet that is able to supply the correct voltage specified
for your model. It will continue to operate at lower
voltages, but will not reach full power.

The protection circuits are designed to
protect the loudspeakers under reasonable
and sensible conditions. Should you choose
to ignore the warning signs [e.g. excessive distortion],
you can still damage the speaker by overdriving it past
the point of amplifier clipping. Such damage is beyond
the scope of the warranty.

Be sure the electrical service can supply enough
amperage for all the components connected to it.

Limiting
Each driver has its own compression circuit which
helps protect it from damaging transient peaks.
The compressor is designed to be transparent and
is not noticeable under normal operating conditions.

We recommend that a stiff (robust) supply of AC
power be used because the amplifiers place high
current demands on the AC line. The more power that is
available on the line, the louder the speakers will play
and the more peak output power will be available for a
cleaner, punchier bass. A suspected problem of “poor
bass performance” is often caused by a weak AC supply
to the amplifiers.
Never remove the ground pin on the power
cord or any other component of the SRMv3
loudspeaker. This is very dangerous.

Overexcursion Protection
An 18 dB/octave high-pass filter just prior to the
low-frequency amplifier prevents very low frequencies
from being amplified. Excessive low-frequency energy
can damage the woofer by causing it to “bottom out,”
also know as overexcursion, which is equivalent to a
mechanical form of clipping.

Care and Maintenance
SRMv3 loudspeakers will provide many years
of reliable service if you follow these guidelines:
Avoid exposing the loudspeakers to moisture.
If they are set up outdoors, be sure they are
under cover if rain is expected.

•

Avoid exposure to extreme cold (below
freezing temperatures). If you must operate
the loudspeakers in a cold environment, warm
up the voice coils slowly by sending a low-level
signal through them for about 15 minutes prior
to high-power operation.

•

Use a dry cloth to clean the cabinets. Only do
this when the power is turned off. Avoid getting
moisture into any of the openings of the
cabinet, particularly where the drivers are
located.

Thermal Protection
All amplifiers produce heat. SRMv3 loudspeakers are
designed to be efficient both electrically and thermally.
In the unlikely event of the amplifier overheating,
a built-in thermal switch will activate, muting the
signal.
When the amplifier has cooled down to a safe
operating temperature, the thermal switch resets itself,
and the SRMv3 loudspeaker resumes normal operation.
If the thermal switch activates, try turning down the
level control a notch or two on the mixing console (or
the back of the loudspeaker) to avoid overheating the
amplifier. Be aware that direct sunlight and/or hot stage
lights may be the culprit of an amplifier overheating.

•

SRM350v3 and SRM450v3 Powered Loudspeakers

WARNING: Installation should only be done
by an experienced technician. Improper
installation may result in damage to the
equipment, injury or death. Make sure that the
loudspeaker is installed in a stable and secure way
in order to avoid any conditions that may be dangerous
for persons or structures.
SRMv3 loudspeakers are designed to sit on the floor
or stage as the main PA or as monitors. They may also
be pole-mounted via the built-in socket on the bottom
of the cabinet. Be sure the pole is capable of supporting
the weight of the loudspeaker. The SPM200 is a great
option when using a subwoofer.
These loudspeakers may also be flown via their
integrated fly points as detailed on page 15. Be sure
to read the PA-A1 Eyebolt Installation Instructions,
as well.
Check to make sure that the support surface
(e.g. floor, etc.) has the necessary mechanical
characteristics to support the weight of the
loudspeaker(s).
When pole-mounting loudspeakers, be sure that they
are stabilized and secured from falling over or being
accidentally pushed over. Failure to follow these
precautions may result in damage to the equipment,
personal injury, or death.

SRMv3 loudspeakers are NOT designed to array
horizontally. If you feel you must put two speakers
side-by-side, you should have a good understanding
of the relationship between the splay angle (the angle
between the facing sides of the cabinets) and frequency
cancellation effects between cabinets.
When two cabinets are positioned side-by-side
such that the rear-angled faces of the enclosures
are parallel, the splay angle will be 90º. This matches
the 90˚ horizontal coverage pattern of each individual
loudspeaker; the interference between the two cabinets
will be minimized, but the total coverage of 180˚ may
be too wide for some applications. The mid and high
frequencies may also be reduced for those in the center
who are too close to the loudspeakers.

Owner’s Manual

Placement

Reducing the splay angle will reduce the total
horizontal coverage, but it also creates an area both
speakers are covering. Instead of a nearfield hole,
this will cause comb-filtering effects in the frequency
response in the overlapping area. The smaller the splay
angle, the more energy will be delivered on-axis, but the
comb-filtering effects will get worse at the same time.
To reiterate, though, we strongly suggest
NOT arraying these loudspeakers horizontally.
Experimentation and experience will help you find
the right balance for your application.

As with any powered components, protect them from
moisture. Avoid installing the loudspeaker in places
exposed to harsh weather conditions. If you are setting
them up outdoors, make sure they are under cover if you
expect rain.

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers
14

Room Acoustics
SRMv3 loudspeakers are designed to sound fantastic
in nearly every application.

•

Position the loudspeakers so the highfrequency drivers are two to four feet above
ear level for the audience (making allowances
for an audience that may be standing/dancing
in the aisles). High frequencies are highly
directional and tend to be absorbed much
easier than lower frequencies. By providing
direct line-of-sight from the loudspeakers
to the audience, you increase the overall
brightness and intelligibility of the sound
system.

•

Highly reverberant rooms, like many
gymnasiums and auditoriums, are a
nightmare for sound system intelligibility.
Multiple reflections off the hard walls, ceiling,
and floor play havoc with the sound. Depending
on the situation, you may be able to take some
steps to minimize the reflections, such as
putting carpeting on the floors, closing
draperies to cover large glass windows, or
hanging tapestries or other materials on the
walls to absorb some of the sound.

But, room acoustics play a crucial role in the overall
performance of a sound system. However, the wide
high-frequency dispersion of the SRMv3 loudspeakers
helps to minimize the problems that typically arise.

Top

900

900 Dispersion
up to 20 kHz

However, in most cases, these remedies are not
possible or practical. So what do you do?
Making the sound system louder generally
doesn’t work because the reflections become
louder, too. The best approach is to provide as
much direct sound coverage to the audience
as possible. The farther away you are from
the speaker, the more prominent will be the
reflected sound.

Here are some additional placement tips to help
overcome some typical room problems that might arise:
•

Placing loudspeakers in the corners of a room
increases the low frequency output and can
cause the sound to be muddy and indistinct.

•

Placing loudspeakers against a wall increases
the low frequency output, though not as much
as corner placement. However, this is a good
way to reinforce the low frequencies, if so
desired.

•

Avoid placing the speakers directly on a
hollow stage floor. A hollow stage can resonate
at certain frequencies, causing peaks and dips
in the frequency response of the room. It is
better to place them on a sturdy stand designed
to handle the weight of the loudspeaker.

Use more speakers strategically placed so they
are closer to the back of the audience. If the
distance between the front and back speakers
is more than about 100 feet, you should use a
delay processor to time-align the sound. (Since
sound travels about 1 foot per millisecond, it
takes about 1/10 of a second to travel 100 feet.)
Keep in mind that the speaker mode and feedback
destroyer are two great ways to compensate for some of
these issues. See page 11 for more information [8, 9].

SRM350v3 and SRM450v3 Powered Loudspeakers

Rigging Hardware and Accessories

Rigging our loudspeakers will invariably require
hardware not supplied by us. Various types of
load-rated hardware are available from a variety
of third-party sources. There are a number of such
companies specializing in manufacturing hardware
for, designing, and installing rigging systems. Each
one of these tasks is a discipline in its own right.
Because of the hazardous nature of rigging work
and the potential liability, engage companies that
specialize in these disciplines to do the work required.

WARNING: The cabinet is suitable for rigging
via its fly points. NEVER attempt to suspend
an SRMv3 loudspeaker by its handle.

Rigging Design Practices
Rigging a loudspeaker requires determining:
1. The rigging methods and hardware that meet static,
shock, dynamic, and any other load requirements for
supporting the loudspeaker from structure.
2. The design factor and required WLL (Working Load
Limit) for this support.
We strongly recommend the following rigging practices:

We do offer certain accessory rigging items and some
of them may be used with a variety of products. While
these accessories are intended to facilitate installation,
the wide variety of possible installation conditions and
array configurations do not permit us to determine their
suitability or load rating for any particular application.
We are not in the business of providing complete
rigging systems, either as designers, manufacturers,
or installers. It is the responsibility of the installer to
provide a properly engineered, load-certified rigging
system for supporting the loudspeaker from structure.

2. Analysis: Have a qualified professional, such as a
licensed Professional Engineer, review and approve the
design before its implementation.

SRMv3 loudspeakers may be individually flown
using a PA-A1 Eyebolt Kit, part number
0031943. SRM350v3 cabinets are fitted
with four M5 insert points on the top and bottom for
installing an optional hanging bracket that allows the
speaker to be flown. SRM350v3 Bracket Kit: PN 0016404

3. Installation: Have a qualified professional rigger do
the installation and inspection.

Rigging Notes

4. Safety: Use adequate safety precautions and
back-up systems.

The SRMv3 loudspeaker’s integral mounting points
are designed to support only the weight of their own
loudspeaker with suitable, external hardware. This
means that each SRMv3 loudspeaker must be supported
independently of any other SRMv3 loudspeaker and any
other loads. All rigging points must be used to hang an
SRMv3 loudspeaker.

SRM350v3 Inserts

SRM450v3 Fly Points

1. Documentation: Thoroughly document the design
with detailed drawings and parts lists.

M5 inserts for mounting optional hanging bracket.

Owner’s Manual

Rigging

MP = Mounting Point

SPEAKER
MODE

FEEDBACK
DESTROYER

MAIN
LIMIT

3
LOGO

HOLD TO
CLEAR

SIG/OL

GAIN

LINE

MIC

OFF

ON
OFF

MON
SOLO

MAX

LINE

MIC

OFF

MAX

CH 1
MIX

POWER
ON

OFF

POWER CONSUMPTION 160W

Top

Bottom

MP
Top

Rear
Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

Appendix A: Service Information
If you think the SRMv3 loudspeaker has a problem,
please check out the following troubleshooting tips and
do your best to confirm the problem. Visit the Support
section of our website (www.720trees.com) where you
will find lots of useful information such as FAQs and
other documentation. You may find the answer to the
problem without having to part with your loudspeaker.

Troubleshooting
No power
• Our favorite question: Is it plugged in? Make sure
the AC outlet is live [check with a tester or lamp].
• Our next favorite question: Is the power switch
on? If not, try turning it on.
• Is the LED on the front panel illuminated?
If not, make sure the AC outlet is live.
If so, refer to “No sound” below.
• The internal AC line fuse may be blown. This is
not a user serviceable part. If you suspect the
AC line fuse is blown, please see the "Repair"
section next.

No sound
• Is the input gain knob for the input source
turned all the way down? Verify that all the gain
knobs in the system are properly adjusted. Look
at the level meter to ensure that the mixer is
receiving a signal.
• Is the signal source working? Make sure the
connecting cables are in good repair and securely
connected at both ends. Make sure the output
level control on the mixing console is turned up
sufficiently to drive the inputs of the speaker.
• Make sure the mixer does not have a mute on or a
processor loop engaged. If you find something like
this, make sure the level is turned down before
disengaging the offending switch.
• Has it shut down? Make sure there is at least
six inches of free space behind each SRMv3
loudspeaker.

Poor bass performance
• Check the polarity of the connections between the
mixer and the loudspeakers. You may have your
positive and negative connections reversed at one
end of one cable, causing one loudspeaker to be
out-of-phase with the other.
• Poor bass performance may be the result of bad
AC power. See the section titled ‘AC Power’ on
page 12 for further details.

Poor sound
• Is it loud and distorted? Make sure that you’re not
overdriving a stage in the signal chain. Verify that
all level controls are set properly.
• Is the input connector plugged completely into
the jack? Be sure all connections are secure.

Noise
• What is the position of the gain knob? It should
be at (or near) “mic” when a mic is connected
and at (or near) “line” when a line-level signal
is connected. It should be “off” for all unused
inputs.
• Make sure all connections to the active
loudspeakers are good and sound.
• Make sure none of the signal cables are routed
near AC cables, power transformers, or other
EMI-inducing devices.
• Is there a light dimmer or other SCR-based device
on the same AC circuit as the SRM loudspeaker?
Use an AC line filter or plug the loudspeaker into
a different AC circuit.

Hum
• Try disconnecting the cable connected to the main
input jack. If the noise disappears, it could be
a “ground loop,” rather than a problem with the
SRMv3 loudspeaker. Try some of the following
troubleshooting ideas:
• Use balanced connections throughout your system
for the best noise rejection.
• Whenever possible, plug all the audio equipment’s
line cords into outlets which share a common
ground. The distance between the outlets and the
common ground should be as short as possible.

Repair
For warranty service, refer to the warranty
information on page 23.
Non-warranty service is available at a factoryauthorized service center. To locate the nearest
service center, visit www.720trees.com, click “Contact
Tech Support” and select “Locate a Service Center
or Distributor” [3]. Service for SRMv3 loudspeakers
living outside the United States can be obtained
through local dealers or distributors.

If you do not have access to our website, you may call
the Tech Support department at 1-800-898-3211,
Monday-Friday, during normal business hours, Pacific
Time, to explain the problem. Tech Support will tell you
where the nearest factory-authorized service center is
located in your area.
SRM350v3 and SRM450v3 Powered Loudspeakers

Balanced XLR Input Connector

Balanced 1/4" TRS Connector

Each SRM loudspeaker has two female XLR/TRS/TS
combo inputs. Be sure the cables are wired per
AES (Audio Engineering Society) standards:

TRS stands for Tip-Ring-Sleeve, the three connections
available on a stereo 1/4" cable. This allows for a
direct connection to the channel 1 and 2 input jacks
on SRM loudspeakers. Be sure the cables are wired per
AES (Audio Engineering Society) standards:

Balanced XLR Input Connector
Pin 1 – Shield (Ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)

Balanced 1/4" TRS Connector
Sleeve – Shield (Ground)
Tip – Positive (+ or hot)
Ring – Negative (– or cold)

SHIELD
HOT

RING SLEEVE
COLD

Owner’s Manual

Appendix B: Connections

SLEEVE RING TIP

SHIELD

1
3

TIP
RING

COLD
2

TIP

HOT

Balanced XLR Input Connector

SLEEVE

Balanced 1/4" TRS Connector

Unbalanced 1/4" TS Connector
Balanced XLR Output Connector
There is also a male XLR output on each SRM
loudspeaker labeled “THRU”. Be sure the cables are
wired per AES (Audio Engineering Society) standards:

TS stands for Tip-Sleeve, the two connections
available on a mono 1/4" cable. This allows for a
direct connection to the channel 1 and 2 input
jacks on SRM loudspeakers. Be sure the cables are
wired per AES (Audio Engineering Society) standards:
Unbalanced 1/4" TS Connector
Sleeve – Shield (Ground)
Tip – Positive (+ or hot)

Balanced XLR Output Connector
Pin 1 – Shield (Ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)

SLEEVE
SHIELD

SLEEVE

TIP

1
TIP
TIP

COLD 3
HOT

1
3

SLEEVE
SHIELD
COLD

HOT

Balanced XLR Output Connector

SRM loudspeakers may be daisy-chained via the male
XLR connector labeled “THRU”. Simply plug the signal
source (i.e., mixer output) into the input jack(s),
and patch that loudspeaker’s THRU jack to the next
loudspeaker’s input jack, and so on, daisy-chaining
multiple SRM loudspeakers. See page 7 for a visual
representation of daisy-chaining.

Unbalanced 1/4" TS Connector

Unbalanced RCA Connector
RCA-type plugs (also known as phono plugs)
and jacks are often used in home stereo and video
equipment and in many other applications. RCA plugs
are unbalanced. Connect the signal to the center post
and the ground (earth) or shield to the surrounding
“basket.” Be sure the cables are wired per AES (Audio
Engineering Society) standards:
Unbalanced RCA Connector
Sleeve – Shield (Ground)
Tip – Positive (+ or hot)
SLEEVE

TIP

SLEEVE

TIP

Unbalanced RCA Connector

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

Appendix C: Technical Information
SRMv3 Loudspeaker Specifications
Acoustic Performance:

Input/Output

Frequency Response (–3 dB)

55 Hz – 20 kHz [SRM350v3]

47 Hz – 20 kHz [SRM450v3]

Channel 1
Mic-Line 8 k balanced
1/4" TRS, Wide-Z™

Frequency Response (–10 dB)
50 Hz – 23 kHz [SRM350v3]

Max peak SPL

Channel 2

42 Hz – 23 kHz [SRM450v3]

Mic-Line 8 k balanced

126 dB [SRM350v3]

1/4" TRS, Wide-Z™

128 dB [SRM450v3]
Crossover Point

3 kHz

Dispersion [H x V]

90˚ x 80˚ [SRM350v3]

90˚ x 45˚ [SRM450v3]

1 M unbalanced

RCA 25 k unbalanced
Thru
Male XLR balanced

[Passive when the Ch 1 / Mix switch

is in the “out” (Ch 1) position]

[Active when the Ch 1 / Mix switch
is in the “in” (Mix) position]

High-Frequency Section
Compression Driver

1.4 in / 36 mm

Line Input Power

Diaphragm Material

Titanium

US detachable line cord

100 – 120 VAC, 50 – 60 Hz, 160W

EU detachable line cord

220 – 240 VAC, 50 – 60 Hz, 160W

AC Connector

3-pin IEC 250 VAC, 10 A male

Power Supply Type

Switchmode

Magnet Material Ferrite

Low-Frequency Section
Woofer Diameter

10 in / 254 mm [SRM350v3]

12 in / 305 mm [SRM450v3]

Cone Material Paper
Magnet Material Ferrite

Safety Features
Input Protection
Peak and RMS limiting,

power supply and amplifier
thermal protection
Display LEDs
Defeatable front power, input
signal/OL, speaker mode,

feedback destroyer on/off and

active filters, system limiter

Power Amplifiers
System Power Amplification
Rated Power
500 watts rms
1000 watts peak
Low Frequency Power Amplifier

Construction Features

Rated Power
400 watts rms
800 watts peak

Cabinet Polypropylene

Rated THD

< 1%

Cooling Convection
Design Class D

Finish

Monitor Angle
50˚ [SRM350v3]
40˚ [SRM450v3]

High Frequency Power Amplifier
Rated Power
100 watts rms
200 watts peak
Rated THD

< 1%

Cooling Convection
Design Class AB

Black, textured finish

Grille
Perforated metal with
weather-resistant coating

SRM350v3 and SRM450v3 Powered Loudspeakers

Physical Properties

Uncle Bill’s Hot Crab Dip

SRM350v3:

Ingredients:

Height

20.8 in / 527 mm

8 tablespoons cream cheese

Width

13.1 in / 333 mm

1/2 cup mayonnaise (Kraft Miracle Whip is preferred)

Depth

12.3 in / 311 mm

Weight

23 lb / 10.4 kg

7 1/2 ounces canned crab meat, drained or 7 1/2 ounces
use fresh crabmeat
4 tablespoons minced onions
1 tablespoon fresh lemon juice

SRM450v3:
Height

26.1 in / 663 mm

Width

16.0 in / 406 mm

Depth

14.8 in / 376 mm

Weight

37 lb / 16.8 kg

1/8 teaspoon Tabasco sauce or 1/8 teaspoon red hot sauce

Owner’s Manual

SRMv3 Loudspeaker Specifications continued...

Directions:
Preheat oven to 350 F degrees.
In a mixing bowl using an electric mixer, beat cream cheese
and mayonnaise until smooth.
Stir in crabmeat, minced onion, lemon juice and Tabasco
sauce.

Mounting Methods
SRM350v3: Floor mount, pole mount or fly via optional bracket.

Spoon mixture into a small oven-proof dish that has been
sprayed with a good vegetable oil.

SRM450v3: Floor mount, pole mount or fly via three integrated
M10 mounting points (using M10 x 1.5 x 20 mm forged
shoulder eyebolts).

Bake in preheated 350 F oven for 20 minutes or until sauce
is bubbly.

See page 15 for more information.

Serve with crackers of your choice, potato chips, tortilla
or taco chips.
NOTE: For those who prefer a spicier dip, add addtional
Tabasco sauce, also 2 teaspoons of Worcestershire sauce.

Options
SRM350v3 Bag

P/N 093-024-00

SRM450v3 Bag

P/N 0002843

SPM200 Loudspeaker Pole Mount
SRM350v3 Bracket Kit
PA-A1 Forged Shoulder Eyebolt Kit
(3 x M10 x 1.5 x 20 mm)

You may consider adding about 4 Gherkin pickles chopped
small.

P/N 2035170-01
P/N 0016404
P/N 0031943

Still reading?
Well, apparently you like to read, even if it just the fine print.
That said, you might enjoy my lil e-zine: One Louder Magazine

Disclaimer

Please visit the website at www.oneloudermagazine.com

Since we are always striving to make our p roducts better by
incorporating new and improved materials, components, and
manufacturing methods, we reserve the right to change these
specifications at any time without notice.

You may also find us on all the typical social media sites.
Please free to ‘like’ and/or ‘follow’ One Louder Magazine.

The “Running Man” figure is a registered trademark of LOUD
Technologies Inc.
All other brand names mentioned are trademarks or r egistered
trademarks of their respective holders, and are hereby
acknowledged.
©2014 LOUD Technologies Inc.
All Rights Reserved.

Should you have an idea for a good interview, don’t hesitate
to reach out: oneloudermagazine@gmail.com
You can’t possibly still be reading this, can you?
Well stop. It’s time to test drive the loudspeakers.
Go give ‘em a whirl! You can do this later.
Ok, fine, you’re going to keep reading even though there is nothing of
any significance written here.
I’ll just keep making the font smaller and smaller.
And I’ll keep writting gibberish until I run out of space...
...but there is nothing to see here.
In fact, here’s some gibberish, otherwise known as placeholder text: Gendi del iniet, vellam eremporerum iur res.

Don’t look it up. There is no meaning to it.

This font is at 2 pt.

This font is at 1 pt.

This font is at 0.5 pt. One Louder Magazine. Go check it out!

Owner’s Manual

SRM350v3 and SRM450v3 Powered Loudspeakers

SRM350v3 Loudspeaker Dimensions

20.8 in
527 mm

13.1 in
333 mm

12.3 in
311 mm

WEIGHT
23 lb
10.4 kg

50˚

SRM450v3 Loudspeaker Dimensions

26.1 in
663 mm

14.8 in
376 mm

16.0 in
406 mm

WEIGHT
37 lb
16.8 kg
45˚

SRM350v3 and SRM450v3 Powered Loudspeakers

PA Speaker Mode – This mode is full range, but focuses
on mid-range clarity where vocals often reside.
Soloist Speaker Mode – This mode features a low
frequency roll-off to get rid of unwanted thumps
and adds boost and sparkle to mid-range and high
frequencies. This mode is perfect for plug-and-play
singer-songwriters.

DJ Speaker Mode – This mode bumps the lows
and highs with a mild tuck to the mids, perfect
for music playback.
Monitor Speaker Mode – This mode features a low
frequency roll-off and a reduction around 2 kHz
to ensure maximum gain before feedback in monitor
applications.

SRM350v3 Loudspeaker Frequency Response

Owner’s Manual

SRM350v3 and SRM450v3 Loudspeaker Frequency Response Legend

+10 dB

0 dB

–10 dB

–20 dB

100

1000

10000

20000

10000

20000

Frequency (Hz)

SRM450v3 Loudspeaker Frequency Response
+10 dB

0 dB

–10 dB

–20 dB

100

1000

Frequency (Hz)

Owner’s Manual

THRU

SRM350v3 and SRM450v3 Powered Loudspeakers

RCA

XLR

XLR + TRS COMBO

CH1
MIX

-20 dB
PAD

Limit

+
-

0 dB fixed gain

GAIN: CCW
XLR: OFF
TRS (WIDE-Z): OFF
RCA: OFF

+
-

Limit

| 12:00 |
| +20 dB |
| 0 dB |
| 0 dB |

LEVEL

CW
+40 dB
+20 dB
+20 dB

Limit

GAIN: CCW | 12:00 | CW
TRS (WIDE-Z): OFF | 0 dB | +20 dB
XLR: OFF | +20 dB | +40 dB

+
-

LEVEL

ADC

LEVEL
DETECT

Feedback
Destroyer

DIGITAL BUS

Speaker
Mode

Acoustic
Correction

FIR
Smart
Protect

AMP STATUS

XOver

Acoustic
Correction

FIR
Smart
Protect

High Definition
Audio Processing

XOver

DSP

DAC

THRU

DAC

AMP

1
ON
2
3
4
ON / OFF
HOLD TO CLR

FEEDBACK
DESTROYER

USER CONTROLS

FRONT LED

MODE

PA
DJ
MON
SOLO

SPEAKER
MODE

LIMIT

LED
ON / OFF

MAIN

SRM350v3 and SRM450v3 Powered Loudspeakers
SRM350v3 and SRM450v3 Loudspeaker Block Diagram

Please keep your sales receipt in a safe place.
This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”)
and is applicable to products purchased in the United States or Canada through a LOUD-authorized
reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser
of the product (hereinafter, “Customer,” “you” or “your”).
For products purchased outside the U.S. or Canada, please visit www.720trees.com to find contact
information for your local distributor, and information on any warranty coverage provided by the
distributor in your local market.

Owner’s Manual

Limited Warranty

LOUD warrants to Customer that the product will be free from defects in materials and workmanship
under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD
or its authorized service representative will at its option, either repair or replace any such nonconforming
product, provided that Customer gives notice of the noncompliance within the Warranty Period to the
Company at: www.720trees.com or by calling LOUD technical support at 1.800.898.3211 (toll-free in
the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD holidays.
Please retain the original dated sales receipt as evidence of the date of purchase. You will need it to obtain
any warranty service.
For full terms and conditions, as well as the specific duration of the Warranty for this product, please
visit www.720trees.com.
The Product Warranty, together with your invoice or receipt, and the terms and conditions located at
www.720trees.com constitutes the entire agreement, and supersedes any and all prior agreements
between LOUD and Customer related to the subject matter hereof. No amendment, modification or
waiver of any of the provisions of this Product Warranty will be valid unless set forth in a written
instrument signed by the party to be bound thereby.

Need help with your loudspeaker?

• Visit www.720trees.com and click Support to find: FAQs, manuals, addendums, and other documents.
• Email us at: techmail@loudtechinc.com.
• Telephone 1-800-898-3211 to speak with one of our splendid technical support chaps
(Monday through Friday, normal business hours, Pacific Time).

Owner’s Manual

16220 Wood-Red Road NE
Woodinville, WA 98072 • USA
Phone: 425.487.4333
Toll-free: 800.898.3211
Fax: 425.487.4337
www.720trees.com

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