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In Reply to: RE: Low Powered Guitar Amp Head posted by Stephen R on March 02, 2015 at 05:28:37
Stephen,
I have made over 120 20W or under amps now. I have two favorites right now the MPC (Magnetic Phase Coupled) PP 6V6 ~18W seen here used by Barenaked Ladies front man Ed Robertson Orange/Light Blue (That's Keith the Guitar Tech). Or my RFC (Reactor Follower Coupled) direct coupled SET output stage KT88 ~12W Purple/Black. The Black amp is a 300B SET amplifier, really nice for jazz guys.
I have made amps with EL84 (not really my fav), 6V6 (really like), KT88/6550, 7591 (nice sound, far better than the EL84, same vibe), ECL86 really cool 3W amp.
After building tons of amps with 12AX7's I find they really suck the life out of amps. I use the 6072A now for everything and it works so much better. You could easily make a 6072A to a 7591A and make it work great. Use a rectifier tube, solid state makes things suck.
I just finished a number of all silver mega $$$ amps and they were all killer some pics over on the MageneQuest forum.
Thanks,
Gordon
J. Gordon Rankin
Follow Ups:
Thanks Gordon. There's some great ideas in there. I've never really liked the AX7 but thought as it's a guitar amp, I may have to use them. The 6072A I really like so that's good news as I have some of them too. I was going to use a rectifier valve as I dislike SS rectification.
This will be interesting as guitar amps are I believe, kinda like instruments too of a sort. So it will be a complete departure from the sudio stuff I've built to date. Never done single ended either so that should be fun.
Is your reactor follower coupled concept a choke loaded cathode follower direct coupled to an output valve? Of course you don't have to say if that's something you want to keep to yourself ;)
cheers,
Stephen
In looking about the net, I think I the answer to my question thanks.
cheers,
Stephen
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