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Groble (Green Ringer Octave Blend)
Posted: 02 Jul 2017, 14:16
by aishabag23
Has anyone seen and/or built this? I have built a few of them and it's a really useful circuit IMO.
http://www.tdpri.com/threads/the-groble ... nd.326950/
Re: Groble (Green Ringer Octave Blend)
Posted: 03 Jul 2017, 00:26
by jalmonsalmon
Never heard of it but I redrew the schematic for here... should be good, I would not mind making one of these!
I live octave pedals
- Groble Green Ringer Octavev
Re: Groble (Green Ringer Octave Blend)
Posted: 03 Jul 2017, 02:16
by aishabag23
Awesome! Yeah, it's really worth a build for anyone who likes octave circuits. Cuts through in a mix really well.
Re: Groble (Green Ringer Octave Blend)
Posted: 07 Sep 2017, 14:08
by Ripthorn
Is Q2 a 5088, or will any small signal PNP BJT work?
Re: Groble (Green Ringer Octave Blend)
Posted: 08 Sep 2017, 04:01
by aishabag23
Ripthorn wrote:Is Q2 a 5088, or will any small signal PNP BJT work?
According to the schematic I have from Tim, it's a 2N3906. That's what I have in my two builds.
The info below was also included on the original schematic.
For best octave effect:
R8, R11, R14 and R15 - Match to indicated value.
D4 & D5 - Match Vd for each other.
Tune R30 for null effect.