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Can Microphonic Feedback Damage an Amp?

Discussion in 'Miscellaneous [BG]' started by prater, Jan 9, 2014.

  1. prater

    prater Supporting Member

    Aug 4, 2011
    Letting my guitarist use my old Fender Ultimate Chorus and my old Ibanez guitar, apparently the pickups are microphonic and resulted in some ear piercing runaway feedback a couple of times. We got it under control enough to play for a bit, I plan on potting the pickups in the guitar tomorrow. But I'm worried about the amp.

    Could this have damaged the amp or the speakers.

    They seemed to sound fine afterward but the drummer kept making comments about how he thought the amp was about to die. Albeit it is not a great amp but it sounded like normal to me.
  2. T-Bird


    Apr 29, 2007
    Finland (Northern Europe)

    Prolonged feedback can damage a poorly designed amp, but generally it's just the speakers (and the audiences ears) that take the hit.
    Especially high frequency drivers.

  3. ggunn


    Aug 30, 2006
    Austin, TX
    Low frequency drivers can also be destroyed by high frequency oscillation from an amp. The driver cannot move fast enough to respond to the signal it is getting, so the energy in the signal turns into heat in the voice coil.

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