Acoustic research p 10 service manual
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Page 1
ELECTRONICS
m SEW
MANUAL
P46)
POWER AMPLIFIER
NTELEDYNE
ACOUSTIC RESEARCH
Turnpike Street, Canton,
Mass. 02021, USA.
Page 2
SPECIFICATION
Rated power output (20Hz-20KH2 8 OHM):
Dynamic power at 8 OHM/4 OHM/2 OHM:
(I.H.F. Standard 20ms Duration)
Clipping power at 8 OHM/4 OHM/2 OHM:
Dynamic Headroom at 8 OHM/4 OHM/2 OHM:
T.H.D. at Rated power:
I.M.D. at Rated power:
Damping Factor:
Frequency Response 20-20KHz:
POWER Band width at T.H.D. 0.1%:
Input Resistance/Capactance:
Input Sensitivity:
Channel Crosstalk (l KHz):
S/N Ratio (A-weighted):
Dimensions W x H x D (inch):
(cm):
Net weight:
POWER supply
0.8. and Canadian Models:
European model:
Other Area Model:
ALIGNMENT
IDLE CURRENT ALIGNMENT
bwwb-l
. Remove the load from speaker terminals.
. Push on power for 5 minutes pre-heating.
120w per channel
400W/800W/1200W
125W/175W/220W
6 dB
0.02%
0.02%
=>100
$0.2 dB
10-40 KHz
40K OHM/lZOpF
IV
85 dB
120 dB
16.9" x 4.3" x 14.3"
43 x 11 x 36.5
15 Kg
120V/60 Hz
220V,24OV/50 Hz
llOV,220V/SO 82,60 Hz
. Turn VR603, VR604 to fully counter clockwise position.
. Connect DC millivolt-meter across R651 for left channel R652 for
Right channel. The meter sensitivity should be set at 100mV full
scale deflection.
5. Adjust VR603 (Left channel) and VR604 (Right channel) till the
reading from meter is between 2.5mV and SmV the alignment is completed.