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Pioneer M-77

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Technic details

Specifications

Type:
Stereo power amplifier
Circuit method:
First stage cascade connection
Differential amplification
Triple push pull
Pure complimentary OCL circui
Effective output (Both ch driven, 20Hz to 20kHz):
250W + 250W (4Ω)
250W + 250W (8Ω)
Harmonic distortion factor (20Hz to 20kHz):
Effective output - 0.1%
125W output (8Ω) - 0.05%
1W output (8Ω) - 0.05%
Intermodulation distortion ratio:
Effective output - 0.1%
125W output - 0.05%
1W output - 0.05%
Output bandwidth (IHF, both ch driven):
5Hz to 30kHz (distortion rate 0.1%)
Frequency response:
5Hz to 80kHz + 0 -1dB
Input terminal Input:
2V / 50kΩ
Output terminal Speaker:
4Ω, 8Ω
Damping factor:
50 (20Hz to 20kHz, 8Ω)
S / N ratio:
110dB (IHF, A network, short circuit)
Semiconductor used:
Transistor - 55 pieces
Diode, others - 81 pieces
Power supply voltage - 100V, 50Hz / 60Hz
Power consumption:
450W
Maximum power consumption:
1200W
External dimensions (W x H x D):
480 × 186.5 × 445mm
Weight:
24.3kg
EIA standard rack mounting unit:
4U
Year:

1980

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