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Orange TB500

Discussion in 'Amps [BG]' started by punisher911, Feb 12, 2013.

  1. punisher911

    punisher911

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    How many people have changed out the chinese tubes in their TB? Which ones did you use? What did it change on your amp?

    I for one put some JJs ECC83s in mine and it made the EQ more useful. Originally it was only good as a cut. Nothing seemed to happen once the dial went past 12:00. Now I can boost the EQ well past 12:00 and hear a difference. Best $28 I spent.

    I've heard/read that you can put a 12AT7 in the V1 spot for more clean headroom/volume before the breakup. But I'm happy with the Orange dirt/sound so I just kept 12AX7s while switching to a better set of tubes.
  2. Mr. Foxen

    Mr. Foxen

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    Disclosures:
    Amp tinkerer at Ampstack
    Its a passive eq, so its all cut, but relatively, the mid is cut only, the bass and treble are boost only.
  3. justBrian

    justBrian Supporting Member

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    I put a JAN 5751 in each spot. It's warmer and smoother all the way around...
  4. Fawkes007

    Fawkes007

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    I swapped out the stock tubes for Tung-Sol 12AX7's. The result has been a smoother gain stage, which is what I was looking for.
  5. punisher911

    punisher911

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    5751s were recommended to me for smoother gain by Eurotubes..
  6. GRoberts

    GRoberts Supporting Member

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    Thanks for this post! This reminds me to try some new tubes. I have tons of 12ax7's, NOS and as new old stock.
  7. Fawkes007

    Fawkes007

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    Frankly, I'd like even "smoother," if anyone has any suggestions. Or should I just get the 1000 watt model and b done with it? Sorry for hijacking...
  8. punisher911

    punisher911

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    Not a hijack.. I've thought about the TB1000... but what do I need that kind of power for? I'd rather have a greater assortment of cab choices for my TB500 and make a tube change or two to get the power level/smoothness I want...
  9. justBrian

    justBrian Supporting Member

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    This change made the amp much more usable, and still left plenty of headroom. Actually, I push it a lot further now without breaking up.

    You could try a 12AT7 for even less gain--I think it would really mellow it out. If you search for the orange club, or Terror bass threads there is a chart of sorts that shows the relative gain of 12AX7 tubes, i.e. 12AX7 =100% 5751 =80%


    :cool:

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