Paralooper/BMP combo question

[cathexis]

Hi!
I'm building a Green BMP/Paralooper combo for a bassplayer friend. Sounds very cool on the breadboard! I'm using Moosapotamus schematic for the paralooper:

http://www.moosapotamus.net/THINGS/paraloop/paralooperSCH.gif

Now, does anyone have suggestions on how not to end up with two volume controls? The BMP has one, the Paralooper has one. Which one would you omit/make a fixed value? And why? Or is there anything to gain in keeping both? This is my first time with a blend circuit, and I figured I might learn something...

LARS

[maarten]

Hello Cathexis,

I would replace the BMP's volume control by a fixed resistor, as the blend and the volumecontrol in the paralooper will give you enough possibility to control the (relative) volume. An alternative would be to replace the blend control by fixed resistors coming from 2 volumecontrols, 1 in the BMP, the other in the paralooper. The final volumecontrol in the paralooper could become a trimpot. These fixed resistors would mix into the final op amp (maybe inverting?) of the paralooper.

Success!
Maarten

[petemoore]

  May sound smass, but these are good answers:
  Which one would you omit/make a fixed value?
  The one deemed most fit to be fixed.
   And why?
  Because it got all tried out and that was the answer that popped out from the trials.
  Or is there anything to gain in keeping both?
  You gain at least the ability to find out if there's anything to gain in keeping both. As well by having both for a time, you get to know what you could have had, how much you miss it.
  You never know what you've got 'till it's gone.

[John Lyons]

With the Paralooper I built I could not dial out the distortion on the clean side of the blend pot
unless I had the volume knob of the distortion to help turn it down. (I used the Catalinbread SFT)
So uless you want some distortion in the clean mix I'd keep both volumes.

That said, with RG's blend circuit (panning for fun, I used circuit #1) I had 100% wet and 100%
dry with the blend knob.

[cathexis]

Thanks for your ideas! I'm heading back to the breadboard to try them out.