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bias adjustmment

  1. Gronard

    Kenwood KA 8004 bias problem

    Hi, I have just bought my first vintage Kenwood amplifier: KA 8004 The amp seems to be working fine and sounds good but when I tried to check and adjust the bias setting according to manual I am getting really strange values. According to the service manual the bias should be set to 20mV by...
  2. Yamaha5000

    CA-1010 Unable to adjust Class A bias, Normal OK

    In class A, measure +/-B Vdc supply (red/white) wires to power amp boards, expect ballpark +/-22Vdc.
    • Yamaha5000
    • Thread
    • bias adjustmment yamaha ca-1010 yamaha power supply
    • Replies: 89
    • Forum: Yamaha
  3. gregmcm

    G-7500 DC and Bias Current Questions

    Have acquired a recent G-7500 project that is now operational. This unit was most likely sitting somewhere for quite some time based on the dirt and dust that was in evidence once I opened it up. Cleaned everything, deoxit the pots and the unit worked fine with the exception of the phono stage...
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