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DIY Stompboxes => Building your own stompbox => Topic started by: Marcvv on March 01, 2016, 03:34:06 AM

Title: Voodoo vibe output too low
Post by: Marcvv on March 01, 2016, 03:34:06 AM
I build a voodoo vibe. It is working fine but when using the tremelo mode the output is just below unity even with the volume on full.
Is it possible to raise the output of the Voodoo vibe just a bit?


https://www.dropbox.com/s/xv1kguunn6bbe7q/Pangea%202015.pdf?dl=0 (https://www.dropbox.com/s/xv1kguunn6bbe7q/Pangea%202015.pdf?dl=0)
Title: Re: Voodoo vibe output too low
Post by: dan.schumaker on March 02, 2016, 08:47:45 AM
I think that is just the perception of the tremolo mode.  Much like other trem's (like the EA Trem) have a volume pot to boost the volume to make up for the perceived loss of volume.  I haven't seen any fixes for this on the Madbean Forum, so I'm not sure if Brane has a fix for it.

But other than that, its an amazing sounding pedal, isn't it :)
Title: Re: Voodoo vibe output too low
Post by: Marcvv on March 03, 2016, 02:55:54 AM
Hi Dan,

No there is no fix that I found, but the mention on some other forum, I forgot where, that Roger Mayer even suggested a simple fix.
It is not just a perception, the tremelo mode really is lower than unity. Before I start putting a boost after it I would like to see if a simplere option is possible.

Great pedal and great build for sure ;)
Thanks.
Title: Re: Voodoo vibe output too low
Post by: Marcvv on March 05, 2016, 02:11:18 AM
Anyone please?

Is there a simple fix possible to make the output level just a bit higher?
Title: Re: Voodoo vibe output too low
Post by: slacker on March 05, 2016, 07:47:05 AM
I don't really understand how the trem works but R41 and R40 seem to be a voltage divider for the signal so you could try making R40 bigger, that looks like it would increase the level.
Title: Re: Voodoo vibe output too low
Post by: Marcvv on March 05, 2016, 03:44:50 PM
Hi Ian,

I will start there. Thanks.