1-tube reverb issue

[aabbs20]

Hey all.

I'm trying to add Tubenit's 1-tube reverb circuit to a hybrid amp I'm building and I'm having some trouble.  The amp has Princeton reverb input and tone stack, and a 5G9 LTP phase inverter and tremolo.  It runs perfectly with the reverb circuit omitted, but the when I connect the reverb pot/330k resistor to R2 I lose almost all of my volume.  A hard strum will make a much louder sound, but that will fade very quickly back into super quiet.  I think it has some reverb on it but its hard to tell.  I've inserted the reverb after the second gain stage (post volume control) and just before the phase inverter.  I've checked and re-checked my wiring and soldering and I'm stumped.

My voltages on the Reverb tube:

Pin 1 - 316
Pin 3 - 3.03
Pin 6 - 159.5
Pin 8 - 1.45

reverb circuit: http://el34world.com/Forum/index.php?topic=7957.0
http://www.thevintagesound.com/ffg/schem/tremolux_5g9_schem.gif
http://www.thevintagesound.com/ffg/schem/princeton_reverb_aa1164_layout.gif

[SILVERGUN]

Can you blend the 2 schematics together to come up with an actual schematic for your amp?
 
Where did you connect RV and RV2 in your amp?

[tubenit]

IF you can cut and paste schematics together to show your schematic and reverb insertion points, we may be able to help?   I've had the one tube reverb work on every single amp I've tried it in.

With respect, Tubenit

[aabbs20]

RV and R2 are connected in pretty much the same places as the princeton reverb. 

I drew up a quick schematic of the area in question.  I'll complete it later tonight when I'm home from work.  This is my first time doing any kind of amp design so forgive me if I forgot something dumb!  I've read your posts on this circuit over and over and I'm confident it will work too.

Thanks a ton. 

[2deaf]

Do you have a cap. in front of the V3A grid?

[aabbs20]

No I do not...

[2deaf]

You need the .02-400 cap. in front of the LTP as shown on the 5g9 schematic.  The junction of your 100K and 330K resistors should connect to the other side of that cap.

[sluckey]

That input cap for the PI is very important. Needs to look like this...

[aabbs20]

I had a feeling it was something small that I should have known.  Thanks guys, it's sounding killer now!  I LOVE the reverb.