Ahuja CPA-760 Operation Manual Download Page 3

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100V Line

When  it  is  desired  to  connect  speakers  or  driver  units  at  a 
distance over 50 meters, it is recommended that the 100V line 
output be used together with line matching transformer for each 
speaker. This  prevents  excessive  power  loss  in  the  speaker 
cables.

4

 

8

 

1

6

 

1

0

0

V

C

O

M

30W

20W

10W

5W

40W

COM

1

L1

L2

30W

20W

10W

5W

40W

COM

2

L1

L2

30W

20W

10W

5W

40W

COM

7

L1

L2

• Operating Procedure

PWR

MON

POWER

C-1

 D

A

2V

C

TREBLE

BA S

S

E

EJ CT

F

F

PLAY

0

2

4

6

8

+10

2

0

2

4

6

8

+10

2

FULL REEL

EXPOSED TAPE

CASSETTE INSERTION

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Hold the cassette tape in such a manner that the exposed 
tape area is facing towards your right and the full reel of 
tape is towards you.

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Now insert the cassette into the cassette loading slot firmly 
and push it in until it snaps into position.

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To retrieve the cassette, push in the FF / EJECT lever fully 
and the cassette will eject out.

AC MAINS OPERATION

Set  all  volume  controls  to  '0'  position  and  keep  the  power 
switch at OFF position. Connect the speakers and required 
inputs.
Plug in the AC power supply cord to the nearest AC mains 
socket and put the power switch to POWER position. The pilot 
LED should glow.
Adjust the volume and tone controls to the desired level in the 
following manner:
1. With all the mic volume controls set at ‘0’ position, raise 

MASTER volume control to 7 or 8 position.

2. The BASS and TREBLE controls should be set at ‘0’ (Flat) 

position.

3. Move the volume control of MIC-1 slowly to the desired 

sound level but not up to   the point where howling and 
feedback starts.

4. Now repeat the same for MIC-2, MIC-3 and so on. 
5. When  using  a  fourth  microphone,  use  MIC-4  jack  and 

keep the MIC/TAPE selector switch at MIC position.

6. When using  Aux as input use RCA  jack provided at the 

rear panel and keep MIC-3/AUX control at desired level.

7. Now use the MASTER control for raising or lowering the 

overall volume level as desired.

8. When  playing  a  tape,  keep  the  MIC/TAPE    switch  at 

TAPE position.

9. The tape can be advanced rapidly by pushing in the FF / 

EJECT lever partially.

10. To stop the tape, push in the FF / EJECT lever fully so that 

the cassette is ejected out.

11. Due  to  the  Auto  Stop  system,  the  cassette  is 

automatically stopped when the tape comes to an end in 
play mode.

12. The Bass and Treble controls should be individually set to 

the desired level as explained below:

BASS:  This  controls  the  tonal  quality  of  low  frequencies 
produced by musical instruments like Tabla / Drum etc., and 
to  some  extent  male  human  voice.  When  this  control  is 
advanced towards BOOST position, it will boost i.e. increase 
the  intensity  of  the  low  frequencies.  Similarly,  when  it  is 
lowered  towards  CUT  position,  it  will  cut  i.e.  reduce  the 
intensity of low frequencies.

TREBLE: This controls the tonal quality of high frequencies 
produced  by  musical  instruments  like  Violin,  Sarangi  and 
Sitar etc. and to some extent female human voice. When the 
control is advanced towards BOOST position, it will boost i.e. 
increase  the  intensity  of  high  frequencies.  Similarly,  when 
lowered,  towards  CUT  position,  it  will  cut  i.e.  reduce  the 
intensity of high frequencies.

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Summary of Contents for CPA-760

Page 1: ...Diodes AMPLIFIER SECTION 6 LEDs 1 IC Power Output 100W RMS max Protections AC Fuse 2 Amp 250V 75W RMS at 10 THD DC Fuse 10 Amp 70W RMS at 5 THD Rated Indicators Pilot LED Input Channels 4 Mic 0 6mV Lo Z 4 7k 5 LED Array for output level 1 Aux 100mV 470k Dimensions W385 H130 D310 mm Frequency Response 50Hz 15 000Hz 3dB Net Weight 9 6 kg S N Ratio 55dB Tone Control Bass 10dB 7dB at 100 Hz Treble 10d...

Page 2: ... LED glows to indicate that the set is ON 13 MASTER Control For overall adjustment of volume level 14 BASS Control For controlling the low frequency signals 15 MIC 4 TAPE Volume Control 16 MIC 3 AUX Volume Control 17 MIC 2 Volume Control 18 MIC 1 Volume Control 19 AC Mains Fuse Rating 2Amp 250V 20 AC Mains Cable with plug 21 BATTERY Terminal Strip For connecting a 12V car battery 22 SPEAKER Termin...

Page 3: ...e MIC 4 jack and keep the MIC TAPE selector switch at MIC position 6 When using Aux as input use RCA jack provided at the rear panel and keep MIC 3 AUX control at desired level 7 Now use the MASTER control for raising or lowering the overall volume level as desired 8 When playing a tape keep the MIC TAPE switch at TAPE position 9 The tape can be advanced rapidly by pushing in the FF EJECTlever par...

Page 4: ...use the Head Capstan Pinch Roller etc that come in contact with the tape become dirty due to dust or magnetic material on the tape Dirty heads cause loss of high frequencies and the output falls Dirty capstan and pinch roller will cause unstable tape speed leading to increased Wow and Flutter Precautions Maintenance Trouble Checks To clean these follow the under mentioned procedure Remove the plas...

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