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WARNING 

 
 
 
 
 
 

FOR YOUR OWN SAFETY, PLEASE READ THIS USER MANUAL CAREFULLY  

BEFORE YOUR INITIAL START-UP! 

 

SAFETY INSTRUCTIONS 

Every person involved with the installation, operation and maintenance of this system have to: 

-

 

be qualified 

-

 

follow the instructions of this manual 

 
 
 
 

 

 
 
 

Before you initial start-up, please make sure that there is no damage caused by transportation. Should 
there be any, consult your dealer and do not use the system. 
 
To maintain perfect condition and to ensure a safe operation, it is absolutely necessary for the user to 
follow the safety instructions and warning notes written in this manual. 
 
Please consider that damages caused by manual modifications to the system are not subject to 
warranty. 
 
This system contains no user-serviceable parts. Refer servicing to qualified technicians only. 
 

IMPORTANT:

 

The manufacturer will not accept liability for any resulting damages caused by the non-
observance of this manual or any unauthorized modification to the system. 

 

 

Never let the power-cord come into contact with other cables! Handle the power-cord and all 
connections with the mains with particular caution! 

 

Never remove warning or informative labels from the unit. 

 

Never use anything to cover the ground contact. 

 

Do not insert objects into air vents. 

 

Do not connect this system to a dimmerpack. 

 

Do not switch the system on and off in short intervals, as this would reduce the system’s life. 

 

Do not open the device and do not modify the device. 

 

Do not open this device. Risk: hazardous radiation exposure. 

 

Only use system indoor, avoid contact with water or other liquids. 

 

Avoid flames and do not put close to flammable liquids or gases. 

 

Always disconnect power from the mains, when system is not used. Only handle the power-cord 
by the plug. Never pull out the plug by tugging the power-cord. 

 

Make sure you don’t use the wrong kind of cables or defective cables. 

 

Make sure that the signals into the mixer are balanced, otherwise hum could be created. 

 

Make sure you use DI boxes to balance unbalanced signals; All incoming signals should be clear. 

 

Make sure that the available voltage is not higher than stated on the rear panel. 

 

Make sure that the power-cord is never crimped or damaged. Check the system and the power-
cord from time to time. 

CAUTION! 

 

Keep this system away from rain and moisture! 

 

CAUTION! Be careful with your operations. 

With a dangerous voltage you can suffer 

a dangerous electric shock when touching the wires!

 

 

Summary of Contents for MPA-4150

Page 1: ...MPA 4150 ORDERCODE D6121...

Page 2: ...ed You can rely on DAP Audio for more excellent audio products We design and manufacture professional audio equipment for the entertainment industry New products are being launched regularly We work h...

Page 3: ...udio MPA 4150 Product Guide Warning Safety instructions Operating Determinations Description Features Overview Front panel Overview Back panel Operation Connection Cables Maintenance Troubleshooting P...

Page 4: ...ution Never remove warning or informative labels from the unit Never use anything to cover the ground contact Do not insert objects into air vents Do not connect this system to a dimmerpack Do not swi...

Page 5: ...Dap Audio device fails to work properly discontinue use immediately Pack the unit securely preferably in the original packing material and return it to your Dap Audio dealer for service Allow time to...

Page 6: ...Use to adjust the siren level 4 Treble Use to adjust the treble frequencies for each channel to your preference 5 Master Use to adjust the volume level for each channel to your preference 6 Bass Use t...

Page 7: ...D lights up when the output is above 200mV 17 Ready LED The LED lights up when the unit is ready for use Backpanel Fig 2 18 Power amp in Mono RCA in Use this input if You don t want to use the build i...

Page 8: ...pressed a chime signal will be put out 32 Siren remote terminal Use this terminal for connecting a remote switch or relay contact Closing the switch will activate the siren independent of the siren f...

Page 9: ...ution have the attenuators turned down during power up Dip switch settings The MPA4150 has 4 balanced combo inputs You can use these for connecting either jack or XLR cables Each input can be customiz...

Page 10: ...is to avoid overloading the amplifier The total speaker power should be at least the power of the amplifier to avoid damage to the speakers High impedance outputs If using either the 25V the 70V outpu...

Page 11: ...s to your advantage Periodically check that your cables are in good condition that they are correctly wired and that all their contacts are in good condition a great number of problems faulty contacts...

Page 12: ...t in the fuse cover Gently pry up the fuse cover The fuse will come out 3 Remove the broken fuse If brown or unclear it is burned out 4 Insert the replacement fuse into the holder where the old fuse w...

Page 13: ...e 10dB at 10kHz Bass 10dB 100Hz Total harmonic distortion 0 5 1KHz nominal power capacity Signal noise ratio Mic 60dB Line 70dB Tel 60dB Priority for MIC 1 Sensitivity 30dB 5 Outputs for speakers 4 8...

Page 14: ...12 Appendix 1 Block diagram MPA 4150 Fig 9...

Page 15: ...2008 DapAudio...

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