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MIXING AMPLIFIERS

MIXING AMPLIFIERS

MA200 Series

5

6

Phantom on / off jumper

The MA200 has been shipped with these jumpers in the OFF position.  For each microphone input a jumper is 
available.  When you put a jumper to the ON position, phantom power will be supplied to the microphone input 
involved so you can use condenser microphones.  In this case NO unbalanced jacks should be used!  Phantom power 
does not damage dynamic balanced microphones.

Power supply fuse

 (inside the housing)

When this fuse blows, replace it by the same type: 20A quick blow.  When this happens frequently, contact your 
nearest dealer.

Now you are ready to build your solid sound system and our extra features will be of great help.

Note: In our policy of continuous improvement, changes can appear without prior notice, including the user manual.

Troubleshooting

No power:

Check whether the “on/off” switch is in the on position and whether the power cord has been inserted

                  properly.  If these two have been checked and still the MA200 remains off, the fuse might be blown.

No sound:

 Check all the wires and loudspeaker selectors.

                   At least the master and one source should be turned clockwise.
                   Check whether the pre amp out is connected to the power amp in.  
                   In the worst case your MA200 is in protective mode.
                   Please check your loudspeaker wiring and loads.  
                   Operate your MA200 within normal conditions.

Distorted sound: 

Your input signal is too high. 

                              Haven't you a line level source connected to a microphone input?  
                              You might also be drawing too much power from your MA200 and the loudspeaker load
                              might be too low (minimum 50 ohm for 100V use).
                             Check the speaker wiring and load with an impedance tester.  Turn down the master level.

Hum and buzz: 

Please check your wiring and grounding, maybe you created a ground loop. 

                           See that all equipment linked are drawing power from the same power supply.  
                           Your radio might get its signal from the cable radio.  In this case you have created a
                           ground loop and a ground loop isolator between the cable signal and your 
                           radio antenna input will be the solution.

Inside settings should only be done by persons familiar to electrical equipment!

JP11

JP5

JP4

JP3

MIC1 : JP3
MIC2 : JP4
MIC3 : JP5
MIC4 : JP11

Phantom Power

Inside Settings

• High quality 200 Watts 100 Volt mixing amplifier

• Integrated AM/FM tuner and CD/MP3 player

• 4 mic (phantom via internal switch), 4 line inputs

• 3 level priority system, 24V priority output 

• Integrated 2-tone chime (adjustable volume)

• 4 output zones. (Zone 4: Mic / music selection)

• Build in dynamic limiter (-3 dB)

• Dimensions: 88 (h) x 430 (w) x 375 (d) mm

MA200CDR

• Same as above, with AM/FM tuner only

MA200R

• Same as above, without any music source

MA200

Summary of Contents for MA200

Page 1: ...MA200 OWNER S MANUAL MIXING AMPLIFIERS MIXING AMPLIFIERS The MA200 is developed by Audioprof nv Lanteernhofstraat 90 BE 2100 Deurne BELGIUM info apart audio com www apart audio com ...

Page 2: ...ead these instructions carefully This little time can avoid a lot of headaches afterwards 1 Keep this manual for future reference 2 Water and humidity are the biggest enemies of electric equipment Operating it under moist conditions can even be dangerous 3 Clean only with dry cloth 4 Do not operate near heaters or place it on other apparatus which produce a lot of heat 5 Be sure your unit is alway...

Page 3: ... 2 3 level control By turning each control clockwise the desired level of that input in the total mix is set To decrease these levels turn counter clockwise The volumes of the inputs not in use should be set fully counter clockwise If not hiss might occur 9 Microphone 4 line 4 level control Adjusts the input signal of the microphone connected to the XLR combo jack at the back or the line source co...

Page 4: ...pe deck MD recorder VHS recorder etc You can also use this output to feed an extra amplifier This output level cannot be controlled separately When you connect your MA200 pre amp out or record out to a microphone input of another mixing amplifier this input will have signal overload and the sound will be masked In this case you should use a line input a DI box or other signal levelling device Neve...

Page 5: ...ity contacts are closed a chime can be activated by turning this trimmer clockwise to the desired chime level When you don t need a chime turn this control fully counter clockwise to the OFF position 31 Emergency telephone input Here you can feed the audio source for paging emergency messages etc This input at line level has automatic activation above 200mV and has a line transformer to avoid grou...

Page 6: ...e worst case your MA200 is in protective mode Please check your loudspeaker wiring and loads Operate your MA200 within normal conditions Distorted sound Your input signal is too high Haven t you a line level source connected to a microphone input You might also be drawing too much power from your MA200 and the loudspeaker load might be too low minimum 50 ohm for 100V use Check the speaker wiring a...

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