Descripción
| POWER OUTPUT | 90 watts per cannel minimum continuous (both channels operating) at 16 ohms from 25 Hz to 20 kHz with less than 1% total harmonic distortion. Typically below .01% at 1 watt. Approximate power available per channel at «clipping» (both CH. OP, 1kHz): 105 watts D-90B: 80 watts per cannel minimum continuous (both channels operating) at 16 ohms from 25 Hz to 20 kHz with less than 0.5% total harmonic distortion. Typically below .005% at 1 watt. Approximate actual power available per channel at «clipping» (both CH. OP, 1kHz): 90 watts |
|---|---|
| POWER BANDWIDTH | (-3dB points) 12 Hz and 60kHz D-90B: (-3dB points) |
| FREQUENCY RESPONSE | 12 Hz to 50kHz |
| INPUT SENSITIVITY | 1.2V RMS for rated output (adjustable) |
| INPUT IMPEDANCE | 75 kOhms, nominal at maximum gain |
| OUTPUT TAPS | |
| OUTPUT REGULATION | Approximately .8dB, 16 ohm load to open circuit D-90B: Approximately .3dB, 16 ohm load to open circuit |
| OVERALL NEGATIVE FEEDBACK | 17.5dB D-90B: 21.5dB |
| DAMPING FACTOR | Approximately 12 D-90B: Approximately 25 |
| DISTORTION | Intermodulation distortion: Less than .5% at 1 dB below rated output (100V p to p, 16 ohms) (SMPTE method) D-90B: Intermodulation distortion: Less than .3% at 1 dB below rated output (100V p to p, 16 ohms) (SMPTE method) |
| SLEW RATE | 20 V/µs D-90B: 15V/µs |
| RISE TIME | 2.5 µs D-90B: 5 µs |
| HUM & NOISE | Wideband, unweighted, more than 90dB below rated output Line components, more than 80dB below rated output |
| POWER SUPPLY ENERGY STORAGE | 240 joules total |
| POWER REQUIREMENTS | 105-125VAC 60 Hz (210-250VAC 50 Hz) 800 watts maximum. 400 watts at «idle». 500 watts at rated power. |
| TUBE COMPLEMENT | D-90: (4) 12AX7, (2) 6FQ7, (2) 12AT7 (4 matched pairs) 6550, (1) 6550 |
| D-90 Revised: (4) 12AX7, (2) 6FQ7, (2) 12AT7, (4 matched pairs) 5881, (1) 6550 | |
| D-90B: (1) 12AX7, (5) 6922, (4 matched pairs) 5881, (1) 12BH7, (1) 12AT7 | |
| OTHER | |
| DIMENSIONS | 19″ (48 cm) 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 | 64 lbs. (29 kg) Net, 80 lbs. (36.3 kg) Shipping |
