Mackie Swa1801 Users Manual Active Subwoofer Spec Sheet

SWA1801 to the manual a1039f14-59fc-47c4-8a7f-f2fad99397b9

2015-02-02

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SWA1801

Active Subwoofer System

SPEAKER

SWA1801
woofer system. It features a newly designed high-precision 18-inch transducer combined with application-specific
amplifier technology. The system is composed of a single,
compact subwoofer cabinet with built-in control and amplifier electronics.
 The transducer used in the SWA1801 system features a
precision 4-inch voice coil that offers extreme power handling capabilities. The magnetic assembly used features
advancements in coil venting, composite polymide former
construction, and structural cooling that provide lower
temperature rise and substantially improved power compression characteristics.
 The amplifier found in the SWA1801 cabinet is an
example of application-specific amplifier design that can
be exercised when designing active speaker systems. The
system uses a proprietary high-efficiency, high-current
amplifier designed to provide high current levels at all
levels of operation. Having access to high current levels,
no matter what the power output, is absolutely critical
in achieving precise, total control of the woofer mass.
This control is responsible for lowering audible distortion artifacts and providing aggressive attack through the
operating band pass of the system. The amplifier, which is
mounted on a large, finned aluminum heat sink, is rated at
800 watts rms continuous output.
 The SWA1801 features a sophisticated on board control system, allowing for flexible integration with active or
passive full range or mid/high speaker systems. The input
panel accepts a line-level input signal and has LOOP OUT
connectors for signal routing to other devices. It also has
HIGH PASS out connectors for connection to active full range
speakers or amplifiers powering passive full range speakers.
All signal routing is through XLR connectors in L+R stereo
or mono. There is a phase selection switch and a recessed
level control. The system features thermal protection for
the power supply and amplifier and also incorporates rms
limiting protection for the amplifier stage that limits the
amount of long term power delivered to the transducer.
 The cabinet is constructed using 18 mm thick multilayered birch plywood and finished in black splatter paint.
There is one handle on each side for efficient loading and
transport as well as a top, female pole mount fixture.

R E LA TE D PR O D U C TS

SRM350/SRM450/SR1530/SA1521/SA1232 Active Loudspeakers, SWA1501 Active Subwoofer, 1202-VLZ PRO
12-Channel Mic/Line Mixer, 1402-VLZ PRO 14-Channel
Mic/Line Mixer, 1604-VLZ PRO and 1642-VLZ PRO 16Channel Mic/Line Mixers.

SWA1801

 The SWA1801 is an 18-inch high output, active sub-

Features
Active, high-output 18-inch subwoofer system with
4-inch voice coil
High-efficiency, high-current 800 watt rms
continuous output amplifier
High output 135 dB of peak SPL
Response down to 35Hz (–10 dB point)
Can be used with active or passive speaker systems
Built-in crossover network with stereo or mono highpass outputs
Recessed level control, center detent rotating knob
(–15 to +5 dB)
Recessed phase switch (0°–180°)
Compact, portable enclosure
Small footprint allows for unobtrusive, strategic
placement
Baltic birch wood construction, built-in pole mount
Correctly weight-balanced enclosure
Two comfortable side handles for easy carrying and
setup

Applications
 Live Sound/Music Reinforcement
 High-Level AV Playback
 Small to Medium-Sized Portable PA Systems
 Corporate Events
 Night Clubs
 Houses of Worship

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Active Subwoofer System

SWA1801 Technical Specifications
45 Hz–120 Hz
35 Hz–120 Hz
129 dB
135 dB
120 Hz

Input/Output
Input:
Input Impedance:
Loop-Through:
High Pass Output:
Level Control:

Stereo bal./unbal. female XLR
50 kΩ
Stereo bal./unbal. male XLR
Stereo bal./unbal. male XLR
Recessed rotating knob, center detent
(–15 to +5 dB)
Phase Control (0° – 180°)
Recessed sliding switch
Amplifier
Total Amplifier Power:

800 W continuous*
1000 W peak
Type:
High-efficiency, high-current Class G hybrid
Rated THD:
.03%
*Rated power is continuous rms wattage into transducer’s
rated impedance @ 100 Hz
Transducer
Number of Drivers:
Woofer Size:
Voice Coil Diameter:
Diaphragm Material:
Magnet Type:

Low-frequency dynamic bass protection,
rms limiting, power supply and
amplifier thermal protection
Signal present, limit, power on, and
thermal (cool down auto-reset) LEDs

Display:

Physical
Basic Design:
Compact/rectangular
Material: .75" (18 mm) thick 13-ply baltic birch plywood
Finish:
High-quality splatter black paint
Handles:
One on each side
Pole Mount: Metal pole mount located on top of cabinet
Moving Wheels:
4 each (2 swivel with bushingmounted ball bearings)
Dimensions (HxWxD):
28.5" x 23.5" x 23.5"
(724 mm x 597 mm x 597 mm)
Weight:
132 lbs/60 kg

SWA1801 Dimensions

1
18 " (457 mm)
4" (102 mm)
Epoxy-reinforced cellulose
Ferrite

Line Input Power
US:
120 VAC, 60 Hz
Recommended Amperage Service:
15 A
Europe:
230 VAC, 50 Hz
Recommended Amperage Service:
8A
AC Connector:
3-pin IEC 250 VAC, 16 A male
Control System Function
Electronic Crossover
Equalization

Safety Features
Protection:

23.5" (597 mm)

23.5" (597 mm)

28.5" (724 mm)

System Acoustic
Acoustic Performance
–3 dB Response:
–10 dB Response:
Max SPL Long-term:
Max SPL Peak:
Crossover Point:

3.3"
(83 mm)

FRONT

7.1"
(180 mm)

5.2"
(132
mm)

9.4"
(239 mm)

SIDE

3.3"
(83 mm)

7.0"
(178
mm)

3.5"
(89 mm)

11.2"
(284 mm)

27.9" (709 mm)

SPEAKER
SWA1801

SWA1801

23.5" (597 mm)

TOP

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3.5"
(89 mm)

SPEAKER

SWA1801

Active Subwoofer System

SWA1801 On-Axis Frequency Response
(With Second and Third Harmonic Components)
110
100

Fundamental

90

Second

80

Third

70
60
50
40
20

100

1000

10000

Frequency (Hz)

SWA1801 Rear Panel Connector Plate
LIMIT

SIGNAL

THERMAL

PARALLEL

THRU
(FULL RANGE OUTPUT)

SUBWOOFER
CONTROL

FULL RANGE
INPUT

NORMAL

POWER

HIGH PASS
(MID/HIGH FREQ)
OUTPUT
120Hz

L

L

SUBWOOFER
LEVEL

IN
R

NORMAL

REV 180

PHASE

3

SWA1801

SPL, 100 dB @ 100 Hz (ref.)

SWA1801 Frequency Response On-Axis

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OUT

R

20000

SPEAKER
SWA1801

SWA1801

Active Subwoofer System

Architects’ and Engineers’ Specifications
The active subwoofer loudspeaker system shall
incorporate one 18-inch low-frequency (LF) transducer mounted within a vented enclosure and
tuned for optimum low-frequency response. System
frequency response shall vary no more than ±3 dB
from 45 Hz to 120 Hz measured on axis. The loudspeaker shall incorporate a low-frequency amplifier
system capable of delivering 800 watts rms over
a frequency range of 30 Hz to 150 Hz. The system
shall provide 129 dB of continuous output and
135 dB of peak output. The amplifier system shall
be mounted on an aluminum heat sink, which shall
be mounted on the rear of the enclosure, and shall
be convection cooled.
The rear-mounted amplifier assembly shall comprise separate signal and AC power panels separated by a large aluminum heat sink. The signal
input panel shall contain two input and two loopthrough XLR connectors, two high-pass output XLR
connectors, a volume level control, a phase switch,
and four status LEDs for Power ON, Signal Present, Limit, and Thermal functions. The system shall
accept a standard line-level signal via the XLR input
connectors. The power switch and IEC AC connector
shall be located on the power panel.

Thermal protection shall be provided by a heat
sink-mounted thermal sensor, which monitors the
heat sink temperature and triggers the thermal
protection circuit should the temperature exceed
140° F (60° C). The Thermal LED shall light and the
input signal shall be muted until the heat sink cools
to a safe operating level, at which point the thermal
protection circuit auto-resets and normal operation
resumes.
Overload protection shall be provided by a limiter circuit, which monitors the amplifier output and
reduces the input level to the amplifier should the
amplifier output begin to clip.
The enclosure shall have a rectangular shape
and shall incorporate two side handles, one on each
side, and a top-mounted pole receptacle. The enclosure shall be constructed of multi-ply wood.
The active subwoofer loudspeaker system shall
be the Mackie SWA1801.

Electronic files for this product available at:
www.mackie.com
This Specification Sheet
Owner/Operator’s Manual

www.mackie.com

16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax 425.487.4337, sales@mackie.com
UK +44.1268.570.808, fax +44.1268.570.809, uk@mackie.com

SWA1801_SS.PDF
SWA1801_OM.PDF

LOUD Technologies continually engages in research related to product improvement. New material,
production methods, and design refinements are introduced into existing products without notice
as a routine expression of that philosophy. For this reason, any current LOUD Technologies product
may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated. ©1999-2004 LOUD Technologies Inc. All rights
reserved.
Part No. 0003348 Rev C 09/05

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