
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) |
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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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