One more stage center reverb question

[Wild Zebra]

So I've been thinking about boxing this up and I'm wanting a reverb unit type thing not a pedal that plugs into the tank like at GGG.  Can I have true bypass and a footswitch and how would I do this??  In the layouts it's either TB or the simple footswitch way.  Thanks

[scaesic]

the stage center needs a reverb tank...

[petemoore]

  Block diagram:
 

                         Reverb driver >Reverb tank >Recovery :
Input split to  <                                                               >Mixer >Output
                        Clean----------------------------------------:
 A bypass circuit would be DPDT like most circuits .. bypassing around from before input and after output, or through the circuit, the reverb circuit 'in/out' go to the tank, the mixer is part of the board circuit.
 The driver circuit provides a low impedance signal output suitable to drive the tanks 'input' condenser, the recovery circuit is a gain stage to bring the tanks  output condensers output to a level suitable for mixing.
 condenser has much in common with speaker and microphone, except instead of a coil driving or being driven by a diaphram [speaker cone /mic diaphram] it is mechanically attached to the spring.

[Wild Zebra]

the stage center needs a reverb tank...

yeh, I know I have already made this unit.

A bypass circuit would be DPDT like most circuits .. bypassing around from before input and after output, or through the circuit, the reverb circuit 'in/out' go to the tank, the mixer is part of the board circuit.
  The driver circuit provides a low impedance signal output suitable to drive the tanks 'input' condenser, the recovery circuit is a gain stage to bring the tanks  output condensers output to a level suitable for mixing.
  condenser has much in common with speaker and microphone, except instead of a coil driving or being driven by a diaphram [speaker cone /mic diaphram] it is mechanically attached to the spring.

I understand, what I'm trying to say is can I make it true bypass all the time and have a switched jack so I can attach a footswitch to turn the effect on and off??  I'm using the simple wiring right know here http://www.generalguitargadgets.com/diagrams/stage_center_reverb_lo1.gif it's just that I can here a slight bit of reverb even when it's canceled.

[Mark Hammer]

In amplifiers, most of the time the "bypass" simply involves grounding out the reverb signal.  Simply ground the input to the recovery stage, and I can assure you the output of the overall unit will be 100% dry and 0% wet.  Now, that's not "true bypass", but the buffering is not exactly tone-sucking either.

[Wild Zebra]

Hi thanks Mark, Isn't that what the cancel switch is doing in the "simple wiring"  grounding the signal out

Simply ground the input to the recovery stage

I don't think I understand the above quote maybe I need a little more of a nudge.

[Mark Hammer]

Now that I actually look at the schematic, yes that is exactly what the switch at point X does.  Ignore the rest of what I said.  I was trying to post in a hurry before I had to leave work to catch a bus.

[Wild Zebra]

Mark, why do you figure I'm hearing a slight reverb and I mean slight?, I reckon it could be a wiring issue.

[Mark Hammer]

If the reverb return signal has a much easier time finding its way to ground than to the input of the mixing stage, you ought not to hear it....at all.  I guess it might be necessary to see the project to have a better idea if there are any wiring issues.  On the other hand, its a simple enough circuit that if I suggest there may be wires running where they shouldn't you can check for that and verify.

[Wild Zebra]

Thanks for all the help.  I'll get it figured out and post some pics of the finished project in the future.  Thanks alot mark.