Fv-1 clock module?

A

Audandash

Well-known member
So can someone explain the fv-1 clock module to me like I am a toddler? If it gives you more control over the frequency why would it not be used on every project instead of the crystal and 15p cap? Also on the same note how do you know how to adjust it? Why wouldn't it be on the fv-1 prototype board. I promise I am not trying to be a smart ass I just really don’t understand the fv-1 stuff yet and want to get my head wrapped around it. Don't forget the like a toddler part.
 
Lots of projects don't need the ability to change the clock. Generally speaking most people who do want to change the clock want to make it slower so they can get longer delays etc. This comes at the expense of sound quality, but in many cases a murkier sound is okay. See the Erica Synths Black Hole DSP for a commercial FV-1 based product that has adjustable clock. Something like that is way more common in modular synth than guitar pedals.
 
Digital Larry said:
Lots of projects don't need the ability to change the clock. Generally speaking most people who do want to change the clock want to make it slower so they can get longer delays etc. This comes at the expense of sound quality, but in many cases a murkier sound is okay. See the Erica Synths Black Hole DSP for a commercial FV-1 based product that has adjustable clock. Something like that is way more common in modular synth than guitar pedals.
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Thank you sir! Looking at black hole I am digging the rotory encoder for the selector.
 
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It can definitely give you a longer delay time on a delay pedal but for me it wasn’t worth the extra parts and work, in a reverb it might do something interesting but I only ever tried it with he Hydra which really didn’t need it.
 
falco_femoralis said:
My Deflector/Afterneath has one of these built in and it really doesn't do much except add noise.
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The Deflector/Afterneath "Density" control, should add a rather significant dimensional change to the reverb. If all you're getting is noise from it, you should be able to dbl-check your component values, hookup and soldering to correct that.
 
Cybercow said:
The Deflector/Afterneath "Density" control, should add a rather significant dimensional change to the reverb. If all you're getting is noise from it, you should be able to dbl-check your component values, hookup and soldering to correct that.
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I went thru a whole troubleshooting wave when I first built the pedal. Everything was ok except I found that the unused pins of the CD4049 were not grounded on the PCB, while the data sheet of the chip states they should be. Fixing this had no effect.

I found a Chuck Bones thread where he mentioned a NOS 4049 has less noise than the modern ones. I recently ordered one from small bear, but haven't taken the enclosure back apart to try it out.
 
falco_femoralis said:
I found a Chuck Bones thread where he mentioned a NOS 4049 has less noise than the modern ones. I recently ordered one from small bear, but haven't taken the enclosure back apart to try it out.
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I don't think that will have much effect here, you'd probably be better off saving that one for a circuit where the 4049 is in the signal path.
 
Robert said:
I don't think that will have much effect here, you'd probably be better off saving that one for a circuit where the 4049 is in the signal path.
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The pedal sounds fine with the Density knob maxed. I didn't label any of the controls so every time I pull the pedal out it's an adventure regardless
 
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