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02-12-2013, 06:14 PM
|  | Registered User | | Join Date: Jan 2005 Location: Warren, MI | | | Orange TB500
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.
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Squier Mikey Way Mustang, Badtz-Maru Bronco, Ibby Mikro, Orange TB500 into Ampeg 410HLF.. ShortScale # 395
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02-12-2013, 07:50 PM
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Amp tinkerer at Ampstack | | Join Date: Jul 2009 Location: Bristol, UK | | | Its a passive eq, so its all cut, but relatively, the mid is cut only, the bass and treble are boost only.
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02-12-2013, 07:58 PM
|  | Registered User | | Join Date: Apr 2002 Location: Kansas City, MO | | | I put a JAN 5751 in each spot. It's warmer and smoother all the way around...
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02-12-2013, 08:01 PM
| | Registered User | | Join Date: Sep 2005 Location: SF Bay Area | | | 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.
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02-12-2013, 08:04 PM
| | Registered User | | Join Date: Jan 2005 Location: Warren, MI | | Quote:
Originally Posted by justBrian  I put a JAN 5751 in each spot. It's warmer and smoother all the way around... | 5751s were recommended to me for smoother gain by Eurotubes..
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Squier Mikey Way Mustang, Badtz-Maru Bronco, Ibby Mikro, Orange TB500 into Ampeg 410HLF.. ShortScale # 395
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02-12-2013, 08:43 PM
|  | Registered User | | Join Date: Jan 2003 Location: Tucson, AZ USA | | | Thanks for this post! This reminds me to try some new tubes. I have tons of 12ax7's, NOS and as new old stock.
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02-12-2013, 08:46 PM
| | Registered User | | Join Date: Sep 2005 Location: SF Bay Area | | | 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...
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02-12-2013, 08:49 PM
| | Registered User | | Join Date: Jan 2005 Location: Warren, MI | | Quote:
Originally Posted by Fawkes007 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... | 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...
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Squier Mikey Way Mustang, Badtz-Maru Bronco, Ibby Mikro, Orange TB500 into Ampeg 410HLF.. ShortScale # 395
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02-13-2013, 11:05 AM
| | Registered User | | Join Date: Apr 2002 Location: Kansas City, MO | | Quote:
Originally Posted by punisher911 5751s were recommended to me for smoother gain by Eurotubes.. |
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% 
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