Two triode reverb

[halfbackstrat]

Has anyone ever experimented with a two triode tube driven reverb?
I never really use the OD section on my ODS and thought it might be better to use that space for something I will use, the idea of having a tube driven spring reverb appeals to me but I don't have space in the chassis for a 5 triode reverb of the ODSR style.
Any thoughts?

[martin manning]

Search "one tube reverb" in the Dumble discussion section and you'll find quite a bit on it.

[halfbackstrat]

Bah! my mistake was searching two triode rather than one tube! Thanks very much Martin, I may rename this thread with the other mods I'd like to do and edit the original post Just so it doesn't go to waste, however if an Admin would like to delete this before I do so, that's perfectly alright with me

[martin manning]

There might be something under "single tube reverb" too.

[Bob-I]

I used an ECL86 for a reverb in one amp, really sounds great. The pentode side is similar to an EL84, triode side is like an AX7. I'll look and see if I still have the schem, but it's pretty simple to build, just an SE EL84 power amp and an AX7 return. The only real concern is the screen resistor needs to be very large, I think I settled on 220k, otherwise the tube arcs across the socket.

[10thTx]

EL34 World amp forum ARCHIVES has a thread on one tube reverb with numerous schematics and info on mods.

One Tube reverb

http://www.el34world.com/Forum/index.php?topic=7957.0

With respect. 10thtx

[ic-racer]

I changed my Super Twin Reverb from two tubes to a single tube reverb (because I wanted to remove the "compactron" and replace it with a 12ax7). Here is the schematic. I had to put a bypass switch on it because there is a significant volume level change without the extra tube's gain. I suspect the circuit could be tweaked a little to improve things.

http://ampgarage.com/forum/files/final_ ... ic_594.pdf