Pioneer M-1500
¥ 40,000 (around 1978)
Commentary
A stereo power amplifier with a power meter.
In order to protect speakers and transistors, a protection circuit using electronic circuit and relay is mounted.
Model Rating
| Type | Stereo power amplifier |
| Circuit system | First stage differential all stage direct connection complimentary service OCL |
| Effective output (both channel drive) | 50W + 50W (8 Ω, 20 Hz to 20 kHz) |
| Harmonic distortion factor (at effective output) | 0.05% (20 Hz to 20 kHz) |
| Intermodulation distortion factor (60 hz : 7 khz = 4 : 1) | 0.05% |
| Output Bandwidth (IHF, double-channel drive, 8 ω) | 5 Hz ~ 40 kHz (Distortion Factor 0.05%) |
| Frequency response (at 1W output) | 5 Hz ~ 40 kHz (Distortion Factor 0.05%) |
| Input Sensitivity / Impedance | 1V/50k Ω |
| Output terminal | Speaker A, B : 4 Ω ~ 16 Ω Speaker A + B : 8 Ω ~ 16 Ω |
| Damping factor | 30 (20 Hz ~ 20 kHz, 8 Ω) |
| Signal-to-noise ratio | 110 dB (IHF, A-network, short circuit) |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption (Electrical Appliance and Material Control Law) | 130W |
| External dimensions | Width 480x Height 142x Depth 290 mm |
| Weight | 7.7kg |
| Remarks | EIA-Standard Rack Mounting Unit : 3U |