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| Pioneer SM-70 |
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| 25,000yen(around the 1969 time) |
@
Handy power
amplifier which uses a silicon transistor.
The semi- complimentary type
hardwired-connection drive which uses 3-fold diffusion mesa type silicon power
transistor is adopted.
Two output-terminals are carried.
Moreover,
since Input sensitivity can be switched to three positions, it can unite with
the preamplifier to combine.
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.JPG)
| Form |
Stereo power amplifier |
| Circuit system |
Pure complimentary SEPP |
| Music power (IHF) |
120W (4ohm)
85W (8ohm) |
| Effective output |
| 1kHz |
One-side-channel operation : |
40W/40W (4ohm)
32W/32W (8ohm) |
| Both channel operation : |
31W+31W (4ohm)
27W+27W (8ohm) |
|
| THD |
0.5% or less (at the time of an effective
output)
0.05% or less (at the time of 20W/20W output) |
| Cross modulation distortion |
0.5% or less (at the time of an effective
output) |
| Output bandwidth (IHF) |
15Hz - 60kHz |
| Frequency characteristic |
15Hz-60kHz}0.5dB |
| Input sensitivity |
0.5V, 1V, 2V |
| Load impedance |
4ohm-16ohm |
| Dumping factor |
30 (8 ohm, 1kHz) or more |
| A hum, a noise |
100dB or more |
| Power consumption |
Maxima: 270W |
| Dimensions |
Width 300x height 118x depth of 254mm
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| Weight |
5.3kg |
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