Bixonic Expandora-mods for more bass?

[ethanw]

Just got a 1st model expandora, I kinda like it. Needs some more bass though. Anyone figure out any mods? It looks like a modded rat and the Ruetz mod would probably work on the 47 ohm.  Wondering if a cap change would help, can't quite figure out where.  Schematic here:  http://www.geofex.com/FX_images/expandor.gif

Thanks in advance-

Ethan

[Meanderthal]

 See that 0.022uf cap between the 2 LM308s? That appears to be the bass bottleneck. Changing it to .1uf should do the trick.

[ethanw]

Thanks for your help! I'll try it tomorrow and report back-

Ethan

[WGTP]

If that doesn't work, there is all kinds of tweaking that can be done to the 2.2/47 & 4.7/560 section for more bass.  I think one of the latter versions had a switch for more bass, but I don't know what is does.   

[ethanw]

Damn! I can't get the Expandora apart. When I try to take the nut off of the footswitch the switch rotates slightly and started to crack! Then, it looks like you have to desolder the jacks to get the board out. I'll post if I figure out how to get this thing apart without breaking it. Thanks again for the good info-

Ethan

[jonathan perez]

desolder braid

[Gus]

Yes thats a fun effect to take apart.  Now this effect has a simple side chain MAYBE the rat section is fine but the sidechain is overcontrolling the photo fet.

  What I mean is the bass pickip level is more than a guitar, and you might have to adjust one or both parts of the circuit.