Help with chorus

[poorbassist]

Okay, first off, I'm new. Which you can tell by the post count obviously. I was recommended to this site by another pedal mod guy on the interwebs. So, Hi to all of you out there!

My question: Does anyone have a recommendation or know of any mods for a chorus pedal that get's a very very deep sound without all the vibrato attached to it? I'm a bass player, and the two chorus pedals I use are both Boss' - Super Chorus and CEB3, but both bother me on the depth. Any suggestions would be greatly appreciated.

[GibsonGM]

Not quite sure I know what you're meaning by "deep sound" without all the vibrato....you're sort of describing a phaser there, maybe?  How would you have "chorus" without it vib'ing?

2) You gotta post a link to a schematic of the circuit in question, P.B'ist!  I just spend a few mins. trying to find it; I found the Boss CE-2, which was as close as I could come in a limited time.   
Looking at this, and if yours is similar (which it probably is), you could add a resistor to decrease the depth. Or tweak the rate, to get a slower rate.  Try turning them to zero in turn, and see if you want "less" than that....the pot is 100k, it could be increased to 275k, 500k, what have you?  But to some degree, a circuit built on a PCB is going to have its own set tone, that can be tweaked a little but not entirely changed, if you know what I mean....

[jkokura]

It's more likely that we can help you find a build to do that will help you achieve what you're looking for. It's not that we can't help you at all, but rather, most of us are doing new builds, and some of us are doing mods, and most of those mods are happening to typical guitar pedals that need mods. Someone may have a better suggestion though, so don't count that option out.

The sound I love for chorus is the small clone. You can get an EH small clone for pretty cheap these days, and there are a few places that will sell kits/pcbs to make them. Check out General Guitar Gadgets, Build Your Own Clone, and Tonepad for some options.

Jacob

[MikeH]

Hi and Welcome to the forum!

Choruses by nature rely on 'vibrato' to make that chorus sound.  It's caused by blending a dry signal with a vibe signal.  In fact you can take a chorus pedal and remove the dry signal all together and voila, you have a pure vibrato.

I think GibsonGM might be on to something, perhaps you'd be interested in something a little most phase-like? 

[Mark Hammer]

Okay, first off, I'm new. Which you can tell by the post count obviously. I was recommended to this site by another pedal mod guy on the interwebs. So, Hi to all of you out there!

Hi right back at you.

My question: Does anyone have a recommendation or know of any mods for a chorus pedal that get's a very very deep sound without all the vibrato attached to it? I'm a bass player, and the two chorus pedals I use are both Boss' - Super Chorus and CEB3, but both bother me on the depth. Any suggestions would be greatly appreciated.

All chorus pedals produce a small pitch shift such that the pitch gets sharper and flatter.  The pitch shift can be disaggregated from the "animation" and "swirl", however.  Keep in mind that the pitch wobble, or what you call the vibrato, isd focussed in the fundamental.  The same time modulation of the harmonic content will not result in quite as obvious a pitch shift.

So, the solution (which I often build into chorus pedals myself) is to identify the capacitor at the very end of the wet signal path, before the delay and clean get mixed together, and reduce its value so that much less of the fundamental is heard in the wet signal.  Keep in mind that this capacitor will result in a fairly shallow (as opposed to steep) filtering effect, so you need to move its starting point relatively high up to achieve a noticeable impact in the region where you want the wet signal to be eliminated.

In the Super Chorus, seen below, the cap yu would probably want to change is C40, a 10uf cap.  Dropping that to 1uf should help make the fundamental less obvious in the wet sgnal, without affecting the clean signal.

[jacobyjd]

Also, one thing I've found (if the above ideas don't do it for you) is that I can tolerate a little deeper pitch shift in a chorus proportional to a reduction in LFO speed.