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Discussion in 'Amps and Cabs [BG]' started by BassGENERAL, Mar 1, 2002.

  1. BassGENERAL


    Dec 8, 2001
    What are the coils on an amp?
  2. rllefebv


    Oct 17, 2000
    Newberg, Oregon
    Voice Coils on the speaker perhaps? What context is the term used in?

  3. bben


    Feb 28, 2002
    Santa Fe, NM
    Yeah, you hear about voice coils in speakers all the time, but rarely about amp coils.

    Most amps have a small coil right before the output. As I understand it, they protect the amplifier from phase shifts (leading to oscillation) or other overloads at high frequencies. The coil has to be pretty stout, since all of the output current flows through it. It's not unheard of that a coil burns out, although a well-designed amp should have a protection circuit that shuts things down before expensive pieces melt.

    If you have a stereo amp, there will be two output coils, one for each channel.
  4. HeavyDuty

    HeavyDuty Supporting Curmudgeon Staff Member Gold Supporting Member

    Jun 26, 2000
    Suburban Chicago, IL
    By "coil", do you mean "choke"?

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