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Audio Research D40
SPECIAL $2,000.00
WITHDRAWN FROM SALE - MAY 2010
Mint Condition!
1981 - R.R.P. US$1,695.00
Complete with Owner's Manual
Over $1,000.00 spent in
professional modifications
| Power output |
35 watts per channel minimum continuous (both
channels operating) at 16 ohms from 25Hz to 20kHz with less than
1% total harmonic distortion. Typically approximately .06% at 30
watts @lkHz. Approximate actual power available per channel at
"clipping" (Both CH. OP, 1kHz): 42 Watts |
| Power bandwidth |
(-3dB points) 12Hz to 54kHz |
| Input sensitivity |
.75V RMS for rated output |
| Input impedance |
75K ohms, nominal at maximum gain |
| Output taps |
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| Output regulation |
Approximately .6dB, 16 ohm load to open circuit |
| Overall negative feedback |
19. 5dB |
| Damping factor |
Approximately 15 |
| Distortion |
Intermodulation distortion: Less than .5% at
1dB below rated output (64V p to p, 16 ohms) (SMPTE method) |
| Slew rate |
8 V/µs |
| Rise time |
5 µs |
| Hum & noise |
lHz-30kHz, unweighted, rnore than 90dB below
rated output. |
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Line components, more than 85dB below rated
output. |
| Power supply energy storage |
100 joules |
| Power requirements |
105-125VAC 60Hz (210-250VAC 50Hz) 300 watts
maximum. 150 watts at "idle". 230 watts at rated power. |
| Tube complement |
(4)12AX7, (2) 6FQ7, (2 matched pairs) 5881, (1)
12AT7, (1) 12BH7 |
| Dimensions |
19" (48cm) W (standard rack panel) x 7" (18 cm)
H x 16.5" (42 cm) D (front panel back). Handles extend 1 5/8"
(4.1 cm) forward of front panel |
| Weight |
44 lbs. (20 kg) Net, 56 lbs. (25.5 kg) Shipping |
Single Ended Inputs
Highend power cord upgrade
Upgraded loudspeaker connectors
New high output storage capacitors
11 Wonder Cap's added
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