Behringer UC200 Chorus LFO smoothing

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Behringer UC200 Chorus LFO smoothing

Postby SirPrimalform » 14 Dec 2016, 13:49

It sounds to me like it has a triangle wave LFO and if you plug a dummy lead into the dry output the main output goes wet only and becomes a cool (if weird) vibrato. It got me wondering whether it would be possible to filter the LFO a touch to give an optional different character to the chorus/vibrato.
My thinking is that the depth pot is probably a voltage divider so putting a cap between the output of that and ground shouldn't be too hard, does this sound right? If it sounds good I'd try and find a place to add a switch so I can go back to the original sound.

Does anyone know what it's based on and if there's a schematic to check my guess?
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Re: Behringer UC200 Chorus LFO smoothing

Postby uncleboko » 15 Dec 2016, 22:48

Here is the UC 100, which is probably very similar to the UC 200
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Re: Behringer UC200 Chorus LFO smoothing

Postby SirPrimalform » 21 Dec 2016, 15:07

Excellent, much appreciated! I imagine the UC200 is a minor revision like a version 1.1 as they seem to have the same features.

Ok, the depth pot VR5A looks like a voltage divider but the lower side is not tied to ground but rather the junction of R16 and R17, which I guess is a biasing reference, looks like it might be V+/2 as they're both 10k. Does this mean I'd want to tie my smoothing cap to that reference voltage rather than ground? I'm just making an (only slightly) educated guess so I'd be really grateful if someone could correct me if I'm wrong or otherwise confirm my understanding.
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