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PostPosted: Mon Jun 08, 2020 8:41 am 
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Thanks for the reply. That makes sense. I'd like to try EL34's at some point. Is there a big difference in tonality between them and the KT66's ?

I'll have to see if my amp has that tap available as I bought it already built. Are there any procedures printed up for the EL34 option anywhere, does anyone know ?


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PostPosted: Mon Jun 08, 2020 3:46 pm 
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Location: Brazoria County Texas
You can read this thread and it should help you. But if your OT is older and it doesn’t have the 3.5 k taps than you cannot use EL34 tubes. If the wires are there they will be blue with a white stripe and brown with a white stripe stowed


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PostPosted: Mon Jun 08, 2020 4:20 pm 
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Thanks mate...I'll take a look when I get home from work. I guess if I really wanted to I could order a new OT ?! If that's my only option that is.


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PostPosted: Mon Jun 08, 2020 4:23 pm 
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Yes you could do that.i don’t play My son does I was the one that built it. He has played 6V6, KT66 and the EL34S in it. I can ask him about the tonal
Differences and post it later tonight
Mark


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PostPosted: Mon Jun 08, 2020 11:22 pm 
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Yep, it has the original OT in it. If you can let me know about the EL34's when you get some time, that would be appreciated.

Thanks, Martin


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PostPosted: Mon Jun 08, 2020 11:36 pm 
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The el 34s in my opinion are the best in it, you can easily get a nice lead tone without a boost or anything which is something the kt66 and 6V6 did well with but the 34s were stronger. Definitely felt more 70’s rock ish with the 34s, similar in gain to 70s marshalls but a different feel and more note definition.

Here are some pages out of the build manual. The extra taps are the later OT. Not sure when Stephen changed it.
Mark


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PostPosted: Mon Jun 08, 2020 11:55 pm 
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Looks like a new OT is on the cards provided it's not too crazy a cost. Will drop them a line for a price . Thanks for doing this Mark. I really appreciate you taking the time.

Martin


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PostPosted: Tue Jun 09, 2020 7:29 am 
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Your welcome, we really like the amp and it was a blast to build.. I have some pictures in another thread “Triwatt build from Texas”. Check it out if you haven’t. I’ve subscribed so if you have questions I’ll see it
Enjoy the amp
Mark


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PostPosted: Tue Jun 09, 2020 8:14 am 
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Thanks Mark. I've had it for a few months now, just haven't had the time to fix some small annoying issues but everything's running as it should now.
Just made myself a combo cab this weekend. Almost finished the build. Should be complete this weekend.


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PostPosted: Tue Jun 09, 2020 8:20 am 
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The OT has supported EL34 for just a year now. Seemed logical to add even more flexibility.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps


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PostPosted: Tue Jun 09, 2020 4:15 pm 
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I'm trying to decide whether to swap out my speaker first or go for the EL34's and change the OT. Looks like we'll have some shows in the next month or two , if the contracts come through it will help with the funding !


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PostPosted: Mon Jun 15, 2020 10:40 pm 
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Output transformer ordered !


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PostPosted: Mon Jun 15, 2020 10:44 pm 
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Excellent, I’ll be here if you need help
Mark


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