[sdiy] PT-80 delay for Synth Modular

[Csaba Zvekan]

Hi Group,

I have built two PT-80 delays from General Guitar Gadgets .com http://www.generalguitargadgets.com/index.php?option=com_content&task=view&id=125&Itemid=26 
  .
Now this is originally a stomp box for guitars and has probably a  
different input gain. I have tested it with my DIY Modular Synth it  
works . But I am not quiet satisfied with two things.
1. The Wet/Dry ratio is a little  too dry. Meaning the original signal  
is too loud ( all though the effect level is all the way up to the max).
2. The Sound of the delay is rather dull and has not quiet a brilliant  
sound.

My questions are : Where do I modify the circuit to have less original  
signal and more effect signal? How can I have a more cleaner delay  
sound ?(If this is even possible with the PT2399).
I also have to mention that I didn't have the 2N5088 high gain NPN  
Transistor and was helping myself with the BC550C and BC547B. They  
sound almost the same.I have purchased some 2n5088 thinking that might  
be my problem . Can somebody verify that?

here is the schematic of the delay. http://www.generalguitargadgets.com/diagrams/pt80schem.pdf

Also I have some other analog  Guitar effects like  
Chorus,Frobnicator,Tremolo and distortion built and was wondering if I  
should modify the input stages differently for use with high level  
synthesizers signals. And how would that look like ?

Any input is of course greatly appreciated.

Thanks


Csaba