ALTEC LANSING 9477B
Released around 1974 ~ 75
¥ 245,300 (1 unit, around 1977)
Commentary
A monaural power amplifier designed to drive monitor amplifiers in recording studios as a successor to the 9477A.
The circuit is a solid-state amplifier using all-stage transistors.
The damping factor value is set so that Altec speakers can be driven in the best possible condition.
Model Rating
| Type | Monaural power amplifier |
| Rated output | 130W continuous |
| Input sensitivity | 0.8V |
| Frequency characteristic | 20 Hz to 20 kHz ± 0.5 dB |
| Load impedance | 4 Ω, 8 Ω, 16 Ω |
| Input impedance | 15k Ω (unbalanced) |
| Damping factor | 14.5 |
| Pwer | 120 VAC / 240 V, 50Hz/60Hz |
| Power consumption | 20 ~ 250W |
| External dimensions | Width 483x Height 178x Depth 216 mm |
| Weight | 15.5kg |