Howdy folks, i scored a sweet old home made tube bass amp from the late 70's (guessing) 4x6l6gc's a 5751 input and a 12au7 P.I.
The Output transformer is a hammond 1650T Massive 20lb iron that is rated for 120W rms. The Pt is my guess a 278cx 800v CT @ 530ma (this Pt is 6" wide from bell to bell). 6.3V @ 6A This is my issue. I want to reuse the transformers for a bigger tube amp.
4xKt88 or 4xEL34 . I need 7A of filament current (4xel34's and 2x12ax7's is 6.6A...better but still makes me alittle nervous). I know hammonds are conservatively rated but adding an addition 1A seems like a real gamble. I have a vintage 60's hammond filament transformer 266L6 - 6.3v@2A sitting on the shelf. Can i wire this transformer parallel with the PT filaments to boost the current rating or will this cause balancing issues?
im tempted to just wire it up with el34's and see where we sit. my goal was to use it in a hillbish Matamp GT120 clone chassis for 4xel34's
The Output transformer is a hammond 1650T Massive 20lb iron that is rated for 120W rms. The Pt is my guess a 278cx 800v CT @ 530ma (this Pt is 6" wide from bell to bell). 6.3V @ 6A This is my issue. I want to reuse the transformers for a bigger tube amp.
4xKt88 or 4xEL34 . I need 7A of filament current (4xel34's and 2x12ax7's is 6.6A...better but still makes me alittle nervous). I know hammonds are conservatively rated but adding an addition 1A seems like a real gamble. I have a vintage 60's hammond filament transformer 266L6 - 6.3v@2A sitting on the shelf. Can i wire this transformer parallel with the PT filaments to boost the current rating or will this cause balancing issues?
im tempted to just wire it up with el34's and see where we sit. my goal was to use it in a hillbish Matamp GT120 clone chassis for 4xel34's
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