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Welcome

Congratulation and thank you for the purchasing  QPA series  4 channel constant voltage 

power amplifier.

Unpacking and Installation

Introductions

2

Introductions/Features

Although it is neither complicated to install nor difficult to operate unit, a few minutes of your 

time  is  required  to  read  this  manual  for  a  properly  wired  installation  and  becoming  familiar 

with its many features and how to use them. Please take a great care in unpacking your set 

and do not discard the carton and other packing materials. They may be needed when moving 

your set and are required if it ever becomes necessary to return your set for service. Never 

place the unit near radiators, in front of heating vents, excessive humid or dusty location to 

avoid early damage and for your years of quality use. 

Connect your unit with the system components according to the description on the following 

pages.

- Front : Power on/off switch.

Features

Controls

- Rear : 4 output level controls.

4 HPF(180 Hz) on/off switches.

Connectors

- 4 CH blanced input with euro block.

- 4 CH constant voltage output with euro block .

- Power and SIG,-10dB, CLIP protect for each output channel.

Indicators:

Summary of Contents for QPA-4120

Page 1: ...Public Address 4 Channel Power Amplifier QPA 4120 QPA 4240 QPA 4360 QPA 4480 QPA 4240 ...

Page 2: ......

Page 3: ...Table of Contents Introductions 2 Features 2 Front panel controls 3 Rear panel controls 4 Block diagram 5 Specifications 6 Table of Contents 1 ...

Page 4: ...scard the carton and other packing materials They may be needed when moving your set and are required if it ever becomes necessary to return your set for service Never place the unit near radiators in front of heating vents excessive humid or dusty location to avoid early damage and for your years of quality use Connect your unit with the system components according to the description on the follo...

Page 5: ...put channels We would like to recommend for users to adjust VOLUME control when CLIP indicators are flickering to make best performance 3 PROTECT INDICATORS 4 POWER INDICATOR These indicators show to be protected amplifiers due to over current or over heat This indicator lights when power switch is turned on 5 POWER SWITCH This button is power on off switch Front Panel Controls 1 ...

Page 6: ... output blocks provide 100V constant voltage output for commercial and industrial use These controls allow to adjust output level This amplifier provide euro block terminae for signal input The channels consist of balanced line and link output These link output allow to cascade for each channels These switches toggles between flat and 180 Hz high pass filter for each input signal These filters using t...

Page 7: ...5 Block Diagram Block Diagram ...

Page 8: ...ower Source S N Ratio Input sensitivity Impedance 50Hz 15kHz 0 1 70 dB 90 dB AC 230 V 50 60Hz 6 9 kg 483x88x380mm 100V 83 Ω Input link Specifications Specifications and design subject to change without notice for improvements QPA 4240 QPA 4360 240W X 4CH 100V 42 Ω 360W X 4CH 100V 27 Ω 480W X 4CH 100V 21 Ω 6 7 kg 6 5 kg 6 3 kg 0dB 20KΩ Balanced 0dB 20KΩ Balanced ...

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