Stage Center Reverb Unit

[David Deen]

Hello, I'm new to the forum but have built a number of effects circuits for the guitar in the past. I had a few questions regarding the Stage Center Reverb Unit that can be found on JD's, General Guitar Gadgets site.

1) I would like to build this circuit for a homemade amp but I was curious what the maximum input voltage swing was for minimum output distortion for the TL074 op-amp configuration? I intend to put it in between the last gain stage and the phase driver sections of the amp. The amp is the usual P-P tube amp w/ 12AX7s for all preamp and phase driver tubes. The preamp tubes will overdrive the power amp so the signal is relatively large coming out of the last gain stage of the preamp. I would measure the voltage swing but i'm not in the same country as the amp at this moment. :?

2) What is an appropriate reverb tank impedence for this circuit and does it matter considering we are using op-amps?

Thanks so much for any help and suggestions.

-David

[Aharon]

I'll help with #2.I built it using a 250 ohm tank and yes I think it does matter.
Aharon