Yamaha B-70 specifications

Category : Power amplifiers

Brand : Yamaha

General

Connections

Tech nical data

Special equipment

• Manufacturer: Yamaha
• Model: B-70
• Years of manufacture: 1981 - 1984
• Hegestellt in: Japan
• Color: Black
• Type: Analog Stereo
• Remote control: No
• Power consumption: 900 W
• Dimensions: 435 x 133 x 380 mm (WxHxD)
• Weight: 13.7 kg
• Factory price approx.: 180' 000 Yen (Japan, 1981)

• Number of inputs:
• Input (sensitivity/impedance)
  • Line 1.41V/25 kOhm
Number of outputs:
• 2x speakers

• Line 1.41V/25 kOhm

• 2x loudspeakers

• Continuous power (with total harmonic distortion)
  • 8 Ohm s: 2x 200 watts
  • 4 Ohm s: 2x 250 Watts (B-70 cannot be measured at 4 ohms!)
• Dynamic power
  • 8 Ohm :
  • 4 Ohm :
• Total harmonic distortion: 0.002%
• Attenuation factor: 200
• Frequency response: 0 - 100,000 Hz
• Stereo channel separation: 95 dB
• Signal-to-noise ratio: 124 dB

• 8 ohms: 2x 200 watts
• 4 Ohm s: 2x 250 watts (B-70 cannot be measured at 4 ohms!)

• 8 Ohm :
• 4 Ohm :

• Power display, switchable and sensitivity switchable
• Channel-separated level controls for speaker pairs

• Other models of the same series:
• B-50
• B-70

• Picture: Yamaha B-70

• The B-70 is the Japan variant of the M-70

• http://audio-heritage.jp/YAMAHA/amp/b-70.html

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