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nakamichi . pe amp . preamplifier . phono

  1. ChrisP2

    Nakamichi CA-7A - Tone Control Hum

    Lots of info around 60 Hz hum on these units when tone control enabled, particularly linked to the “Low” tone control. Had one on the bench, here’s what I found, hope it helps someone out there. - Hum was audible and clearly visible on scope at over 10 mVpp primarly on Left channel - Not...
    • ChrisP2
    • Thread
    • humming sound nakamichi . pe amp . preamplifier . phono
    • Replies: 2
    • Forum: Solid State
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