Fender Tweed Twin Reissue JB Edition
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Re: Fender Tweed Twin Reissue JB Edition
At times I have considered using a 5AU4 but have not found the proper power transformer for the HT or sufficient filament current. I would think you could have one built along the lines of 300-0-300 @ 450mA/6.3VCT @ 6A/5V @ 5A. This would be sufficient to run 4- 5881 tubes and up to 6- 12A_7 tubes. For what its worth the 5AU4 draws 3.75A of filament current.
Re: Fender Tweed Twin Reissue JB Edition
Got a spare Hammond 290Fex (Twin Reverb power tranny) and was thinking along the lines of using it for a tweed twin but with diode rectification, would there likely to be any pitfalls that i should be aware off?
Re: Fender Tweed Twin Reissue JB Edition
Hi strat100 . I have used the 290FEX in several 100 watt JM builds and its a great transformer! One of them is gigged weekly and has had no problems.
With 4x JJ 6L6GC tubes and 5 preamp tubes I get the B+ to stay at around 420V . My wall voltage is 117v . I run the tubes at about 34ma each.
I really like the results I get with this transformer and its nice and beefy at 11.5 lbs.
I am not sure if this B+ is ok for you but reliability wise its a fine transformer.
Cheers
Guy
With 4x JJ 6L6GC tubes and 5 preamp tubes I get the B+ to stay at around 420V . My wall voltage is 117v . I run the tubes at about 34ma each.
I really like the results I get with this transformer and its nice and beefy at 11.5 lbs.
I am not sure if this B+ is ok for you but reliability wise its a fine transformer.
Cheers
Guy
Re: Fender Tweed Twin Reissue JB Edition
Thanks for info Guy77 if needs be i could knock the B+ down to around 400v with the mosfet b+ reducer. Who needs sag anyway
Re: Fender Tweed Twin Reissue JB Edition
whats the diode between the screens and heater on v4 and v7?Colossal wrote: ↑Sat Apr 07, 2018 12:25 am https://www.youtube.com/watch?v=3z2gU8KOAE4
Tweed Twin, Joe Bonamassa limited edition
First Tweed Twins to come out of Fullerton in what, 50 years?
Celestion JB-85 speakers (Ipswich made Classic Lead 80)
Tung Sol Reissue 6L6s
12AX7s in all three positions
Mercury Mag transformers
**Humble request: please don't slag Joe, if you hate'em and/or see this as a money grab. Let's just revel in the fact that Fender reissued this amp.**
Tweed Twin JB.jpg
www.myspace.com/20bonesband
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Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s
www.myspace.com/prostitutes
Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s
Re: Fender Tweed Twin Reissue JB Edition
yes!
www.myspace.com/20bonesband
www.myspace.com/prostitutes
Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s
www.myspace.com/prostitutes
Express, Comet 60, Jtm45, jtm50, jmp50, 6g6b, vibroverb, champster, alessandro rottweiler
4x12" w/H75s