Havin' Some Friendly Fire Fun With a Favorite Sponge

Cybercow

Well-known member
Diggin' the vibe I'm having with "Grunge Bob", I took a dip into the Friendly Fire Fuzz circuit with another short run featuring our favorite deep-sea sponge fellow. But I encountered a snag with just the Friendly Fire Fuzz circuit. It's a below unity gain fuzz build. @Ginsly was kind enough to point out PPCB's '3PDT Breakout Board with Boost"; so I got some. Unfortunately, my pre-finished & drill enclosures are 1590B and not the designated 125B called for by the 3PDT board. It's about 3.5mm too wide to fit into a 1590B enclosure. But with some detailed information from @Robert, I was able to remove about 2mm from each side of them and by jockeying some resistor legs around I was able to get them to fit and work. And considering the shallow depth of th 1590B, there is no room for the 10K trimpot that was to sit on the bottom side of the board and I committed to just using a fixed 10K resistor across where the trimpot should go. This allowed the Friendly Fire Fuzz's Volume to manage the final volume to well above unity gain.

Here's a the short short photo-journal of the end result . . . . .

The unadulterated 3PDT Breakout Board with Boost board . . . .
3PDT_Board_Full.jpg

The 3PDT board trimmed down . . . .
3PDT_Board_Bot_Trimmed.jpg 3PDT_Board_Top_Trimmed.jpg

Then stuffed with the Friendly Fire Fuzz into a 1590B enclosure . . . .
GBSF_2-Knob_Black_Gutshot.jpg GBSF_2-Knob_Black_Done.jpg

T'would be nice if someone were to reproduce that 3PDT board so it was only 1.95" wide. (Hint, hint.)
 
Diggin' the vibe I'm having with "Grunge Bob", I took a dip into the Friendly Fire Fuzz circuit with another short run featuring our favorite deep-sea sponge fellow. But I encountered a snag with just the Friendly Fire Fuzz circuit. It's a below unity gain fuzz build. @Ginsly was kind enough to point out PPCB's '3PDT Breakout Board with Boost"; so I got some. Unfortunately, my pre-finished & drill enclosures are 1590B and not the designated 125B called for by the 3PDT board. It's about 3.5mm too wide to fit into a 1590B enclosure. But with some detailed information from @Robert, I was able to remove about 2mm from each side of them and by jockeying some resistor legs around I was able to get them to fit and work. And considering the shallow depth of th 1590B, there is no room for the 10K trimpot that was to sit on the bottom side of the board and I committed to just using a fixed 10K resistor across where the trimpot should go. This allowed the Friendly Fire Fuzz's Volume to manage the final volume to well above unity gain.

Here's a the short short photo-journal of the end result . . . . .

The unadulterated 3PDT Breakout Board with Boost board . . . .
View attachment 92487

The 3PDT board trimmed down . . . .
View attachment 92488 View attachment 92489
uno online
Then stuffed with the Friendly Fire Fuzz into a 1590B enclosure . . . .
View attachment 92490 View attachment 92491

T'would be nice if someone were to reproduce that 3PDT board so it was only 1.95" wide. (Hint, hint.)
The process of installing them is very time-consuming and complicated. Really commend your efforts.
 
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