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6CA7 - EL34 SE project
Posted: Mon Mar 28, 2011 10:40 am
by avguy49
I am curious about thoughts anyone might have on one I am building soon. I am planning to use a Hammond 1627SEA rated at 30W, 2500 ohms, 160ma in a single ended amp using the 40% taps with either a large bottle 6CA7 or an EL34 cathode biased. This amp I am talking about will be with my own breed of front end design, probably a JTM45 style PT, a 5AR4 or 5U4 rectifier tube, star grounded design, with DC filaments, small box style head design. Should be curious, loud, but friendly... Thoughts? ~Philly
Re: 6CA7 - EL34 SE project
Posted: Fri Apr 01, 2011 1:40 am
by soundguruman
you should make it push pull because there will be less hum and more
even harmonic distortion
Re: 6CA7 - EL34 SE project
Posted: Wed Apr 06, 2011 11:37 pm
by joey
avguy49 wrote:I am curious about thoughts anyone might have on one I am building soon. I am planning to use a Hammond 1627SEA rated at 30W, 2500 ohms, 160ma in a single ended amp using the 40% taps with either a large bottle 6CA7 or an EL34 cathode biased. This amp I am talking about will be with my own breed of front end design, probably a JTM45 style PT, a 5AR4 or 5U4 rectifier tube, star grounded design, with DC filaments, small box style head design. Should be curious, loud, but friendly... Thoughts? ~Philly
Did you do the necessary calculation to ensure you can use your ot to reflect a proper impedance for the el34/6ca7? Friendly is not what I think this amp will be though.
Re: 6CA7 - EL34 SE project
Posted: Thu Apr 07, 2011 7:17 am
by HTH
I've built a SE EL34 amp and tried it at 2k5, 5k and 10k primaries on the OT - 5k is ballpark for SE EL34s anyway, but it also sounded best (for classic Marshall tones).