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Griggs 3rd December 2012 01:59 PM

Reverb for project valve amp
 
Hi there.

Looking at getting myself a project to work on over Christmas.

Amp Maker: Guitar amp kits and parts :: Guitar amp kits :: Double Six switchable power amplifier

Want to add a valve reverb unit in it like on an old fender or vox amp. Does anyone know any kits to use or have any advice?

Thanks

cyclecamper 5th December 2012 07:44 PM

I have a Peavey Valverb reverb & tremolo I just put in the effects loop.

Weber has an IC tremolo kit for tube amps, but not a reverb, though they do have a "general purpose gain stage" add-on sub-chassis that would do nicely.

https://taweber.powweb.com/store/modkits.htm#gpgain

Robert Kesh 12th December 2012 11:47 AM

I'd get a kit with a reverb. You won't fit the extra valves in the kit's chassis so you'll have to have separate chassis for the reverb's circuitry, match the B+ voltages, and fit the tank in your case too.

You could maybe fit the accutronics belton brick in your kit. It's a reasonably good digital reverb made by the guys who make spring reverb tanks in an attempt to get that same sound. I like it, but many don't. Support circuitry is pretty small, but solid state. It won't thunder when you hit the amp though.

JMFahey 12th December 2012 03:09 PM

1 Attachment(s)
Or you might do what most tube amp makers do (Peavey/Laney/Marshall/etc.) and add an SS reverb circuit there.
Here's how Fender does it: slams the reverb circuit between the full tube pre and power amp.
No big deal, after all it's an effect.

jeeptechfred 12th December 2012 03:36 PM

http://http://www.webphix.com/schema...a763_schem.pdfLooking at the construction manual it looks like there is room for two 9 pin sockets. I think I would use the circuit from a fender aa763. I would add terminal strips near the sockets and build it point to point. and then implement the circuit the same way fender does http://www.webphix.com/schematic%20h...a763_schem.pdf

cyclecamper 13th December 2012 05:27 PM

There's some schematics on The Valve Wizard
and I know I saw lots more...

jeeptechfred 13th December 2012 06:00 PM

Quote:

Originally Posted by cyclecamper (Post 3283334)
There's some schematics on The Valve Wizard
and I know I saw lots more...


Very nice!


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