Audio Database


Pioneer M-1500
40,000yen(around the 1978 time)

Stereo power amplifier carrying a power meter.

In order to protect a speaker and a transistor, the electronic circuitry and the protection network using a relay are carried.

Rating of a mode
Form Stereo power amplifier
Circuit system First rank differential whole page hardwired-connection complimentary OCL
Effective output (both channel drive) 50W+50W (8 ohm, 20Hz - 20kHz)
THD (at the time of an effective output) 0.05% (20Hz - 20kHz)
Cross modulation distortion (60Hz:7kHz=4:1) 0.05%
Output bandwidth (IHF, both channel drive, 8ohm) 5Hz - 40kHz (0.05% of distortion)
Frequency characteristic (at the time of 1W output) 5Hz - 40kHz (0.05% of distortion)
Input sensitivity/impedance 1V/50kohm
Output-terminal Speaker A, B:4ohms - 16ohm
Speaker A+B: 8ohm-16ohm
Dumping factor 30 (20Hz - 20kHz, 8ohm)
SN ratio 110dB (IHF, A network, a short circuit)
Supply voltage AC100V, 50Hz/60Hz
Power consumption
(Electrical Appliance and Material Control Law)
Dimensions Width 480x height 142x depth of 290mm
Weight 7.7kg
Remarks EIA specification rack mounting unit: 3U