Tube Amp Archive

Got it, many thanks sluckey.

Here's where I've gotten to, 6G15 into that Tore T gain stage, into a 6G12-A tremolo, in series like back in the day.
Any suggestions or improvements?

Now that I've finally completed a layout in diylc for a 6G15 with the 6G12-A tremolo circuit added, it strikes me that by converting it to a reverb into tremolo setup I will be able to use the second half of the extra 12AX7.
Might not be able to fit it all onto the ReVibe board though.

whenever you have a unit that incorporates both LFO-based amplitude modulation and a spring reverb it practically begs for "ghetto" echo effect implementation too: amplitude modulate that "wet" reverb signal instead. That's pretty standard for Fender though isn't it, the reverb was always before th...

Thanks for the explanation sluckey, I hadn't really looked at the Tore T mods, didn't twig that they were on the same section that I was wondering about.

Huge thanks for that info and the layout tictac, stayed up until the wee hours last night completing my own express sch schematic so that I could try and finalize a parts order. Lot's of back and forth between your schematic and a few others. Could one of you enlighten me about the change in the V1-...

Thanks for confirming that for me, it's what I thought.

This one, knew I should have put the link in there.

http://el34world.com/Hoffman/images/rev ... cToreT.gif

I'm so close to ordering the parts now after obsessing over the various schematics for the past few days. A few questions.... Markusv, did you and your friend proceed with the ReVibe? Mr El34, did Tore T come up with his mods earlier than the date shown on the schematic you linked to? It's just that...

I have to agree that the later harmonic vibrato circuit was seen as an improvement over the earlier version, but I believe the main reason this effect was discontinued is economic: A 6G4-A has ten tubes, and still no reverb. Reverb was probably considered a must-have by the marketing department, an...

tubeswell wrote:Worth it? The brown amp trems, nice as they are, were an experiment that didn't last long at Fender. By 1964 the AB763 circuits were ubiquitous.

So you'll be going with the AB763 tremolo in your ReVibe then?

tictac wrote:I did the more complex Fender harmonic vibrato by adding a 6AT6 for the extra triode needed....

Nice, did you build one? If so, how did it work out?

Why? I doubt there will be any difference in the sound. Part of what's got me going on this is because there did seem to be a difference on the few clips I've heard, an even more three dimensional sound, more "space". I like the looks of the "A" schematic that uses a CF and a cathodyne phase invert...

I'm actually trying to merge the three tube Fender tremolo circuit with the Hoffman 2015-5-16 schematic, had a little confusion as to which ReVibe was which as I've been looking at them all.

the -A tremolo version? What's that? Do you have a schematic? Just in the process of reworking the Hoffman 2015-05-16 schematic in ExpressSCH to fit in Leo's 3 tube tremolo circuit. I'm two weeks new to these schematic and layout drawing programs, fumbling not very successfully with diylc currently...