VOX AC30 CC2 problem!

Discussion in 'Amps and Cabs' started by _B_, Feb 26, 2009.

  1. _B_

    _B_ Member

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    I just re-tubed my VOX AC30 CC2X amp today. It worked fine for about ten minutes, then the top boost channel lost about half it's volume. It happened as I was playing it. The tubes seem to be good, and the "clean" channel still has full power. Anybody else have this issue and/or know how to fix it? I can't figure out what it is. :huh
     
  2. thilton59

    thilton59 Supporting Member

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    Does it work with the old tubes back in it?
     
  3. utterhack

    utterhack Member

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    sounds like a preamp tube...
     
  4. _B_

    _B_ Member

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    Well, the old tubes had gone out...so either I got a bad new tube, or something is causing the amp to blow tubes...
     
  5. EZchair Picker

    EZchair Picker Member

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    I'd agree with a bad preamp tube as well. Most likely the one in the 2d slot. It's been know to happen even with new tubes.
     
  6. stoob0t

    stoob0t Member

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    If it's only happening on your 'top boost' channel, from what you've described i'd be inclined to think that it was a pre-amp tube. I've had a couple of occaisions where i've bought brand new sets of pre-amp tubes and one has arrived dead or microphonic (usually because of how it's been handled by the shippers)
     
  7. sixstring531

    sixstring531 Supporting Member

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    +1000 on what everyone is saying. You aren't blowing fuses -- so I wouldn't think it to be the rectifier -- check them preamps.
     
  8. voxworld

    voxworld Member

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    I always mark and keep my old tubes for backup unless they actually died completely.
    It's not necessary to change preamp tubes unless one actually dies or you want to try for different tones.
    Did you have a tech/shop install the tubes? They should return your used tubes to you, especially the preamp tubes.
     
  9. voxworld

    voxworld Member

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    Sorry, I think I may have misread your response post.
     
  10. jfrisco17

    jfrisco17 Member

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    Did you figure this out??
     

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