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Author Topic: Shaping your tone 'without' a soldering iron.  (Read 23614 times)
JohnE
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« Reply #30 on: August 22, 2008, 12:36:26 AM »
Quote from: Dumbleseeker on August 20, 2008, 11:58:32 AM
Great Information! I think I am just going to have to play it more to decide on the gain. I have read alot of information on 6L6 tubes. Their seem to be a wide array to choose from. The JJ's I got from Nik sound good-just not sure if there is something better? Some people seem to think that the preamp tubes make the most difference and that the power tubes are only noticable at higher volumes. What are your thoughts?

I have a THD Bivalve 30. It allows me to quickly change tubes without biasing and hence allows me to A/B tubes of all kinds.
My favorite 6L6s on a consistent basis are the JJ's. An extremely close second would be the Svetlana Winged C's (not SED). The Winged C's just are not as consistent as the JJ's. My main gigging amp for many years has been a '66 Super Reverb and I usually run the JJ's in it. I buy them and my JJ pre-amp tubes from Bob at Eurotubes. I highly recommended BOB at Eurotubes. I have also used TAD 6L6's in my Super Reverb. They sound very, very,  good, but they only last 3-6 months, for some reason. I also have a Fender Bassman clone that only sounds good to me when I am running the JJ 6L6s.

The effect of pre-amp tubes is far more noticeable. That said, you will notice a tone improvement with the right output tubes. Moreover if you have crappy output tubes, you are wasting your money on upgraded pre-amp tubes.

Bottom Line: I recommend the JJ's but do try a couple other and see what you think.
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Dumbleseeker
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« Reply #31 on: August 25, 2008, 07:46:32 PM »
I must say that I was a little dissapointed when I first got my Overtone. Undecided Afterall, I had waited 13 weeks and mine did not sound like any of the clips I had heard. Little did I know that they all require some fine tuning. However, that is also what makes them great amps. They can be tweaked to your liking.  Wink I would suggest that anyone wanting to change their tone to try different preamp tubes. Huge difference!!!! I wanted cleans so I change all of them to EH Ay7. This created great cleans but not enough grind on the OD. One thought was to turn up the internal trimmer but decided against this. After reading a lot of information I decided to set the trimmer on 10. So in doing so I need to change more tubes. Now V1 has tung-sol 12ax7 ,V2 has 5751 and V3 has EH Ay7. Now it sounds killer and I am considering changing the JJ power tubes to SED 6l6GC. Many thanks to all of you who have guided me in my tone quest. It will never be over but I am getting closer everyday Grin
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JohnE
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« Reply #32 on: August 28, 2008, 08:09:50 PM »
Quote from: Dumbleseeker on August 25, 2008, 07:46:32 PM
I must say that I was a little dissapointed when I first got my Overtone. Undecided Afterall, I had waited 13 weeks and mine did not sound like any of the clips I had heard. Little did I know that they all require some fine tuning. However, that is also what makes them great amps. They can be tweaked to your liking.  Wink I would suggest that anyone wanting to change their tone to try different preamp tubes. Huge difference!!!! I wanted cleans so I change all of them to EH Ay7. This created great cleans but not enough grind on the OD. One thought was to turn up the internal trimmer but decided against this. After reading a lot of information I decided to set the trimmer on 10. So in doing so I need to change more tubes. Now V1 has tung-sol 12ax7 ,V2 has 5751 and V3 has EH Ay7. Now it sounds killer and I am considering changing the JJ power tubes to SED 6l6GC. Many thanks to all of you who have guided me in my tone quest. It will never be over but I am getting closer everyday Grin

Very Interesting pre-amp set up. I will have to try that out. I would recommend the original Svetlana Winged C's rather than the SED's. SED bought out the winged C brand name  and they are not the same tube. The Svetlana Winged C's sre very musical.
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bluesdude6
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« Reply #33 on: September 09, 2008, 12:12:41 AM »
I've had my OTS for a couple of weeks now and am trying different pre-amp tubes and speakers. The problem is I made the mistake of thinking the bias dial was an trimmer for the overdrive or what ever. I got some info here in biasing with a meter I have at home, and so if I can work that out I'll be able to set the bias. But I'm not sure exactly where the internal trimmers are and which ones to adjust.
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