Cloudmpa240 Ut 1 User Manual

Cloudmpa240D3 CLOUDMPA240D3 CLOUDMPA240D3 pdf kavson.co.uk

User Manual: Pdf Cloudmpa240 CLOUDMPA240 pdf kavson.co.uk

Open the PDF directly: View PDF .
Page Count: 4

General Description

• 6 Line inputs, stereo inputs summed to mono

• Line inputs via RCA phono’s with input gain controls

adjacent to connectors

• Source select via front panel rotary selector or remotely via RSL6

• Line input level via front panel control or remotely via RL1 or RSL6

• Line 6 priority selectable by internal jumper, release

time 3s/6s/12s selectable by internal jumper

• Music EQ by tamperproof LF & HF presets on rear panel

• 4 Microphone Inputs, low impedance balanced

via phoenix style connectors

• Microphone EQ by tamperproof LF & HF presets on rear panel

• 100Hz HP dedicated filter on Microphone inputs

• Phantom power selected by internal jumper for each microphone

• Limiter dedicated to microphone inputs with LED indication

• Mic 1 has access triggered priority over Mics 2 – 4

• All mics have VOX priority over music signals, providing

30dB of attenuation (on/off by jumper)

• Integrated chime triggered by access control of Mic 1

(on/off by jumper and level by internal preset)

• Compatible with Bose®SeriesIIS EQ Cards

• Remote Music Mute configurable for NO or NC operation

• Overall “Peak Limiter” with LED indication on front panel

Amplifier features:

• 63Hz HP Filter for 25/70/100V operation

•Variable speed fan cooling

• Switch on delay

• DC protection

• IV Limiting

• 2U Rack chassis fitted with removable rack ears.

Cloud Electronics Limited

140 Staniforth Road, Sheffield S9 3HF. England. Telephone: +44 (0)114 244 7051 Fax: +44 (0)114 242 5462 Web: www.cloud.co.uk E-mail: info@cloud.co.uk

MPA240/MPA120/MPA60 :General Purpose Mixer Amplifier

Shown without rack ears

The increase in demand for higher quality mixed impedance output

amplifiers for general installer applications has instigated the launch of

Cloud Electronics new MPA Series, MPA240, MPA120 and MPA60, 6 line

+ 4 microphone inputs into a single zone with configurable 25/70 or 100Volt

internal transformer plus the industry standard wall mount remote

controllers (RL1 & RSL6) make the MPA Series the most flexible and

reliable installer amps in the market.

Line Inputs

Frequency Response 20Hz +0dB -1dB, 63Hz -3dB

3rd order filter, selectable by jumper

20kHz -1dB low impedance output,

20kHz -2dB 100/70/25V line outputs

Distortion <0.03% low impedance output

<0.04% 25/70/100V outputs

@ 1kHz 1dB below full power

80kHz bandwidth

Sensitivity 195mV (-12dBu) to 2V (+8dBu)

Input Gain Control 20dB range

Input Impedance 47kΩ

Headroom >-20dB

Noise -90dBr 22kHz bandwidth, 0dB input

Relative to full power output.

Equalisation HF: ±10dB/10kHz

LF: ±10dB/50Hz

Microphone Inputs

Frequency Response 100Hz / -3dB(3rd order filter)

20kHz +0, -1dB low impedance output

20kHz -2dB 100/70/25V line outputs

Distortion <0.03% @ 1kHz -1dB below full power

80kHz bandwidth

Gain Range 10dB - 50dB

Input Impedance >2kΩ(balanced)

Phantom Power +15V (PCB jumper for on/off)

Headroom >20dB

Input Noise -127dB EIN 22Hz - 22kHz (150Ω)

Equalisation HF: ±10dB/5kHz

LF: ±10dB/100Hz

Power Output

MPA240 240 Watts, any output @1kHz,

<0.07%THD+N

MPA120 120 Watts, any output @1kHz,

<0.07%THD+N

MPA60 60 Watts, any output @1kHz,

<0.07%THD+N

Power Supply

Power supply 230V/115/100VAC Depending on version

Mains Fuse rating 230V version 100/115V version

(20mm x 5mm)

MPA240 T4A H T8A H

MPA120 T2A H T4A H

MPA60 T1A H T2A H

Cooling & Protection

Cooling Variable speed fan cooling, air intake

on the front of the product, exhaust

on the rear

Protection Fixed level signal limiter with a max gain

reduction of 20dB, DC protection,

IV limiting & short circuit protection,

Switch on delay

Physical

Dimensions 482.6mm (19 inch)x 88.0mm (2U)

x 344.5 mm deep (+ connectors & knobs)

Weight MPA240 12.6 kg net

MPA120 10.5kg net

MPA60 9.0kg net

Technical Specifications

Input1

Input2

Input3

Input4

Input5

Input6

Mic1

Access(Mic1)

Mic2

Mic3

Output

Mic4

Remote

Output

CDPlayer1

CDPlayer2

Organ

Automatic

Source

MPA60/120or240

100Vlineoutput

RSL-6

Mic1 Mic2

RadioMic3

Lectern1 Lectern2

• The single area has two fixed mic points,

lectern 1 & 2 and a Radio Mic to allow

the presenter mobility.

• Any of the input sources can be selected

and the music level controlled by the RSL-6

at the back of the area.

• The Automatic Source is on line 6 to give

priority over all other inputs.

• Dependent on the size of the area the

MPA60 (60W), MPA120 (120W)

or MPA240 (240W) can be used.

• The output can be configured as 100V/70V

or 25V line output (as shown)

or low impedence.

System Example – House of Worship (MPA240/120 or 60)

Cloud Electronics Ltd MPA240 Constant Voltage Frequency Response

-40

+2

-38

-36

-34

-32

-30

-28

-26

-24

-22

-20

-18

-16

-14

-12

-10

-8

-6

-4

-2

-0

d

B

r

20 20k50 100 200 500 1k 2k 5k 10k

Hz

Cloud Electronics Ltd Microphone EQ Curves

Color

Sweep Trace Line Style Thick Data Axi s Co mm ent

1 1 Black Solid 1 Anlr.Level A Left HF Boos t

2 1 Black Da sh 1 Anlr.Level A Left HF Cut

3 1 Black Da sh Dot 1 Anlr.Level A Le ft LF Cut

4 1 Black Do t 1 Anlr.Level A Left LF Boo st

-60

+15

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

+0

+5

+10

d

B

r

20 20k50 100 200 500 1k 2k 5k 10k

Hz

Cloud Electronics Ltd MPA240 Line Input Crosstalk

-100

-60

-98

-96

-94

-92

-90

-88

-86

-84

-82

-80

-78

-76

-74

-72

-70

-68

-66

-64

-62

d

B

r

20 20k50 100 200 500 1k 2k 5k 10k

Hz

Cloud Electronics Ltd MPA240 Music EQ Curves

ColorSweep Trace Line Style Thi ck Data Axis Co mm ent

1 1 Bla ck Solid 1 Anl r .Am p l Le ft LFCut

2 1 Bla ck Dash 1 Anl r .Am p l Left LF Boo st

3 1 Bla ck Da sh Dot 1 Anl r .Am p l Left H F Boost

4 1 Bla ck Dot 1 Anl r .Am p l Le ft HFCut

-14

+14

-12

-10

-8

-6

-4

-2

+0

+2

+4

+6

+8

+10

+12

d

B

r

20 20k50 100 200 500 1k 2k 5k 10k

Hz

Graphs

MPA240 100/70/25V Output Frequency Response MPA240 Line Input Crosstalk

MPA240 Microphone EQ Curves MPA240 Music EQ Curves

Cloud Electronics Ltd MPA240 Line Input Frequency Response

-10

+10

-9

-8

-7

-6

-5

-4

-3

-2

-1

-0

+1

+2

+3

+4

+5

+6

+7

+8

+9

d

B

r

20 20k50 100 200 500 1k 2k 5k 10k

Hz

Cloud Electronics Ltd MPA240 Crosstalk: Adjacent Microphone Channels

-110

-60

-108

-106

-104

-102

-100

-98

-96

-94

-92

-90

-88

-86

-84

-82

-80

-78

-76

-74

-72

-70

-68

-66

-64

-62

d

B

r

70 20k100 200 500 1k 2k 5k 10k

Hz

TTTTTT

MPA240 Line Input Frequency Response MPA240 Crosstalk:Adjacent Microphone Channels

The mono mixer-amplifier shall be equipped with six unbalanced stereo

music inputs on phono sockets (RCA jacks) and four balanced microphone

inputs on multipin connectors.The music input to be used shall be selectable

by a 6-position front panel rotary switch.The four mic inputs shall be mixed

to a mono signal and summed with a mono (L+R) sum of the selected

music input. Each mic input shall have its own front panel level control.

It shall be possible to control the level of the music source independently

of the mic levels. Each music input and each mic input shall also have a rear

panel gain control. 2-band equalisation adjustment shall be provided

independently for the selected music source and summed mic signals.

A control input shall be provided to activate one mic input (Mic 1)

by external contact closure; it shall be possible to configure the mixer-amplifier

such that this function is overriden and Mic 1 is always active. It shall be

possible to configure the mixer-amplifier to perform the following additional

functions: i) when activated by its control input, Mic 1 will take priority

over any other mic input in use; ii) detection of a signal on any mic input

will automatically reduce the music level by 30dB, iii) one line input will

automatically override all others, even if unselected. Optional remote control

panels shall be available to permit control of music level only or music level

and input selection; it shall be possible to retrofit these to the mixer-amplifier

at any time. An external control input shall be provided to allow muting

of the music source by a fire alarm or other external emergency system.

The mixer-amplifier will include a chime generator circuit triggered

by a signal on Mic 1 input; it shall be possible to internally disable/enable

this function.

The microphone mixer stage shall include a high-pass filter to remove

background LF noise below 100Hz (-3dB).

A second high-pass filter shall be included to remove LF content below

65Hz (-3dB) from the mixed music and mic signals to minimise transformer

saturation in 100v/70v/25v line systems; this filter shall be internally by-passable.

Two separate internal fixed limiter circuits shall be fitted; these shall be located

at i) the output of the microphone mixer stage and ii) at the input of the

power amplifier stage. Operation of either limiter shall be indicated by a front

panel LED.The mixer-amplifier shall incorporate protection circuitry that

isolates the output i) during power-up, ii) in the event of DC being detected

at the amplifier output, iii) if the internal heatsink temperature exceeds

90C (194F).

The mixer-amplifier shall be available in three models with different output

powers of 240W, 120W or 60W , into a 4 ohm load.The mixer-amplifier

shall be capable of driving either low impedance (4 ohms or higher) loads,

or 100V, 70V or 25V line systems via an internal transformer fitted as

standard. It shall not be possible to use both types of output

simultaneously.

The 100V, 70V and 25V transformer outputs shall be available on separate

rear panel output terminals, shrouded by a screw-attached safety cover.

The mixer-amplifier shall accept internal Bose™ Series IIS plug-in equaliser

cards to permit use with compatible Bose™ loudspeakers.The mixer-amplifier

shall be built in a 2U steel chassis for mounting in a standard 19” rack.

Temperature-controlled forced-air fan cooling with front-to-rear airflow

shall be employed.The amplifier will be fitted with a front-panel power

switch with LED indication.

The mixer-amplifier shall be the Cloud MPA240 (240W output),

the Cloud MPA120 (120W output) or the Cloud MPA60 (60W output).

E&OE

Architect’s and Engineer’s Specification

MIC1MIC 1

MIC2MIC 2

MIC3MIC 3

MIC4MIC 4

0V0V

0V0V

0V0V

0V0V

+15V+15V

+15V+15V

+15V+15V

+15V+15V

PHANTOM

POWER

PHANTOM

POWER

GAINGAIN

GAINGAIN

GAINGAIN

GAINGAIN

PHANTOM

POWER

PHANTOM

POWER

PHANTOM

POWER

PHANTOM

POWER

PHANTOM

POWER

PHANTOM

POWER

MIC1

ACCESS

MIC 1

ACCESS CHIMECHIME

ACCESS

INPUTS

ACCESS

INPUTS

CONNECT INPUT

TO 0V TOOPEN

MICCHANNEL

CONNECT INPUT

TO 0V TO OPEN

MIC CHANNEL

ACCESSBYPASSACCESS BYPASS

0V0V

MIC1 ACCESS

TRIGGERSCHIME

MIC 1 ACCESS

TRIGGERS CHIME

MIC1OVER

MIC2,3&4

PRIORITY

MIC 1 OVER

MIC 2, 3 & 4

PRIORITY

RELEASE TIME

12s-NOJUMPER

RELEASE TIME

12s - NO JUMPER

HIGH

PASS

FILTER

HIGH

PASS

FILTER

HIGH

PASS

FILTER

HIGH

PASS

FILTER

MIC

EQ

MIC

EQ

AUTO

VOICEOVER

AUTO

VOICE OVER

MUSIC

EQ

MUSIC

EQ

AVOAVO

VCAVCA

LINE1LINE 1

LINE2LINE 2

LINE3LINE 3

LINE4LINE 4

LINE5LINE 5

LINE6LINE 6

LIMITERLIMITER

LIMITERLIMITER

++SPEAKEREQ

SOCKET

SPEAKER EQ

SOCKET

3s3s

6s6s

LINE6

PRIORITY

LINE 6

PRIORITY

MUSIC

MUTE

MUSIC

MUTE

ON/OFFON / OFF

POWER

AMPLIFIER

POWER

AMPLIFIER

PROTECTPROTECT

0V0V

MINLOAD

4OHMS

MIN LOAD

4OHMS

OUTPUTOUTPUT

100V100V

70V70V

50V50V

COMCOM

FORCEFRONT PANEL

SOURCESELECT

FORCE FRONT PANEL

SOURCE SELECT

HIGHPASSFILTER

BYPASS

HIGH PASS FILTER

BYPASS

FRONT PANEL

MUSICSOURCE ANDLEVEL

CONTROLS

FRONT PANEL

MUSIC SOURCE AND LEVEL

CONTROLS

0V0V

11

2

2

33

REMOTE

LEVEL

CONNECTOR

REMOTE

LEVEL

CONNECTOR

FRONT PANEL /

REMOTESWITCH

FRONT PANEL /

REMOTE SWITCH

RSL-6

OPTIONAL REMOTE

SOURCE ANDLEVEL

RSL-6

OPTIONAL REMOTE

SOURCE AND LEVEL

LINEOUTPUT

TRANSFORMER

LINE OUTPUT

TRANSFORMER

Block Diagram