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luffinjunior
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Joined: 24/02/03
Posts: 82
Vox Advice
      #720672 - 26/03/09 06:04 PM
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I've got a Vox AC30 CC1 that I bought second hand about a year ago...

With the gain down it's got a decent enough clean sound but as soon as I turn the gain up it sounds brittle and fizzy and compressed. Warm would not be a word I'd use to describe it...

Is this normal or does it need to go to the amp doctor? Could it be a valve issue?

Thanks

L


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Grantsos



Joined: 07/09/06
Posts: 722
Re: Vox Advice new [Re: luffinjunior]
      #720677 - 26/03/09 06:28 PM
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The valves are a possibile culprit, I'd have thought. Though, the amp would compress as you turn up.


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Mark Dagger
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Joined: 21/02/04
Posts: 120
Loc: England, Bristol
Re: Vox Advice new [Re: luffinjunior]
      #720678 - 26/03/09 06:33 PM
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I dont think it should "brittle" and fizzy as you put it. This could be a pre-amp valve problem and its probably worth swapping these out. Does it sound like this through all 3 channels?

Try selecting the "Normal" channel and increasing the volume (not the master) - this channel should sound quite dull and dark. The brilliant channel is harsh sounding by comparison.

Let us know how you get on.


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luffinjunior
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Joined: 24/02/03
Posts: 82
Re: Vox Advice new [Re: luffinjunior]
      #720780 - 27/03/09 03:32 AM
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Yep, does it with all three channels.

I've got a friend that builds valve amps, I think I'll get him to have a listen...


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