Citronic 171.231 – MA800 Manuale utente

USER MANUAL

MA SERIES MOSFET DUAL

CHANNEL POWER AMPLIFIERS

171.231 –MA800

171.234 –MA1300

171.237 –MA2000

User Manual

171.231/234/237

Important safety instructions.

For your own safety, please ensure you read this instruction manual carefully before using the amplifier.

Caution electric shock.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE

TO RAIN OR MOISTURE

WARNING: CONNECT ONLY TO MAINS SOCKET WITH PROTECTIVE EARTHING CONNECTION.

Also ensure that there is no damage to the case, which may have occurred during transportation.

If so do not use the equipment and contact your dealer.

Introduction

Dear custome r, thank you for purchasing the MA series amplifier from Citronic.

Please read this user manual before use.

Product Features:

* True power output from the amplifier

* Excellent sound quality

* Front panel switchable LED illumination

* Balanced line inputs and link sockets (XLR and 6.3mm jack)

* Speakon® speaker sockets

* Active clip limiter internally configurable

* Dual 10 segment LED VU displays (VU is an abbreviation for Volume Units)

* Class AB Mosfet output stage

* Fan cooled with proportional fan speed control (twin fans MA2000)

* DC, thermal and short circuit protection

* Mains inrush current limiter and soft start

* 2U 19" rack mountable

* Designed in the UK

User Manual

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Technical spec:

MA-800

MA-1300

MA-2000

Rated Power

RMS @ 4 Ohms

2 x 400W

2 x 650W

2 x 1000W

Rated Power

RMS @ 8 Ohms

2 x 270W

2 x 430W

2 x 670W

Frequency

Response

20Hz - 25kHz

+/-0.5dB

20Hz - 25kHz

+/-0.5dB

20Hz - 25kHz

+/-0.5dB

THD

<0.02% @ 1kHz

Damping Factor

Better than 400

Channel Separation

Better than 80dB

Thermal Protection

cut-out temperature

90°C

D/C Protection

+/-32V

Clip Limiter

Active @ clip, any

load

Active @ clip, any

load

Active @ clip, any

load

Input impedance :

Balanced

10K + 10K

Input sensitivity

775mV / 0dBu

Signal to noise ratio

Better than 100dB

Slew rate

40V / µS

Dimensions (mm)

483 x 290 x 89

483 x 420 x 89

Weight

13kg

14.5kg

24kg

µS means micro-second – not uS

User Manual

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Front Panel

1) Mains Power switch on and off

2) LED Back light switch for full panel illumination

3) LED Display Master output

4) Gain control channel A

5) Gain control channel B

Rear Panel

1) IEC Power input socket

2) Fuse holder

3) Ground point for DJ mixers / players

4) Speaker output channel B

5) Speaker output channel A

6) Signal input combo (Balance/Unbalanced) for Channel B

7) Signal input combo (Balance/Unbalanced) for Channel A

8) Signal input 3 pin XLR Balanced for Channel B

9) Signal input 3 pin XLR Balanced for Channel A

User Manual

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Power supply

Supply voltage is 230Vac ±10%, 50-60Hz

A standard IEC mains inlet is fitted to all models and a power lead is supplied in the box. The IEC lead

connects between the inlet socket and a suitable mains supply. Please ensure you switch off the unit on

the front panel before turning the mains on or off at the wall.

Limiter

The amplifiers are fitted with internally adjustable limiters to protect speakers and reduce clipping

distortion. It is advisable to keep the limiter engaged at all times if this facility is available. Red LED's

will illuminate when the operator is driving the amplifier passed the clip point.

Installation

Each amplifier is 19” (483mm) Rack mountable. When mounting the amplifier into the rack, please

ensure that there is enough space around the amplifier to allow for good airflow and keep the amplifier

cool.

We recommend that you install the heaviest item on the bottom of the rack and the lightest towards the

top. Ensure 1U of space is left between each amplifier as the heat dissipates from the rear and bottom

panel.

Preventing or identifying interference

First of all, check that the amplifier is installed at a distance from industrial RF (radio frequency), radios,

tvs and mobile phones as these can cause noisy interference.

When installing components watch out for so-called ground loops, which could cause hum and

jeopardize the amplifier performance. The best way to avoid ground loops is to connect the electric

ground of all the equipment to a single central point.

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