Yamaha M-4 specifications

Category : Power amplifiers

Brand : Yamaha

General

Connections

Tech nical data

Special equipment

• Manufacturer: Yamaha
• Model: M-4
• Years of manufacture: 1979 - 1981
• Manufactured in:
• Color: Black
• Type: Stereo Analog
• Remote control: No
• Power consumption: 900 Watts
• Dimensions: 435 x 146 x 375 mm (WxHxD)
• Weight: 18.5 kg
• Factory price approx.: 1.450,- DM

• Number of inputs:
  • Line: 1 V, 25 kOhm
• Number of outputs:
  • 2x speakers

• Line: 1 V, 25 kOhm

• 2x speakers
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• Continuous power (with total harmonic distortion)
  • 8 Ohm : 2x 120 W
  • 4 Ohm : 2x 170 W
• Dynamic power
  • 8 Ohm : 2x 135 W
  • 4 Ohm : 2x 210 W
• Total harmonic distortion: 0.005% (120 W / 8Ώ ) / < 0.01% (170 W / 4Ώ)
• Attenuation factor: 200 (8Ohm , 1kHz), 100 (4 ohm / 1 kHz)
• Frequency response: 10 - 100,000 Hz
• Stereo channel separation: 90 dB (1 kHz)
• Signal-to-noise ratio: 118 dB
• 8 ohms: 2x 120 W
• 4 ohms: 2x 170 W
• 8 Ohm s: 2x 135 W
• 4 Ohm s: 2x 210 W
• Power display 2 mW - 145 W ( 10 LEDs / channel)
• Overload-indicated (depending on distortion)
• Input level controller
• Other models of the same series:
• M-2
• M-4
• B-6
• Previous model:
• none
• Successor model:
• M-50
• Picture: Yamaha M-4
• Picture: Yamaha M-4
• Report of good-old-hifi [1]
• Device presentation of good-old-hifi [2]





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