Groble (Green Ringer Octave Blend)

Stompboxes circuits published in magazines, books or on DIY electronics websites.

Groble (Green Ringer Octave Blend)

Postby aishabag23 » 02 Jul 2017, 15:16

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/
User avatar
aishabag23
 
Posts: 30
Joined: 20 Sep 2014, 19:43
Location: California
Has thanked: 71 times
Have thanks: 10 times

Re: Groble (Green Ringer Octave Blend)

Postby jalmonsalmon » 03 Jul 2017, 01:26

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 :applause:
Groble.jpg
You do not have the required permissions to view the files attached to this post.

For this message the author jalmonsalmon has received thanks: 3
dv8r601 (10 Jul 2017, 23:29), jimini (03 Jul 2017, 13:13), Manfred (03 Jul 2017, 09:36)
User avatar
jalmonsalmon
Solder Soldier
 
Posts: 190
Joined: 14 Sep 2012, 23:49
Has thanked: 65 times
Have thanks: 22 times

Re: Groble (Green Ringer Octave Blend)

Postby aishabag23 » 03 Jul 2017, 03:16

Awesome! Yeah, it's really worth a build for anyone who likes octave circuits. Cuts through in a mix really well.
User avatar
aishabag23
 
Posts: 30
Joined: 20 Sep 2014, 19:43
Location: California
Has thanked: 71 times
Have thanks: 10 times

Re: Groble (Green Ringer Octave Blend)

Postby Ripthorn » 07 Sep 2017, 15:08

Is Q2 a 5088, or will any small signal PNP BJT work?
Ripthorn
Breadboard Brother
 
Posts: 61
Joined: 07 Dec 2008, 04:34
Has thanked: 0 time
Have thanks: 0 time

Re: Groble (Green Ringer Octave Blend)

Postby aishabag23 » 08 Sep 2017, 05:01

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.
User avatar
aishabag23
 
Posts: 30
Joined: 20 Sep 2014, 19:43
Location: California
Has thanked: 71 times
Have thanks: 10 times


Return to DIY Stompbox designs

Who is online

Users browsing this forum: No registered users and 2 guests