I've recently finished designing the PCB for a diy kit version of this pedal I make called the Eat the Rich distortion device. Here's some photos of the finished build. I purposefully designed the pcbs and wiring to be as straightforward and clean/easy as possible for this somewhat larger circuit/build. If anyone's interested in building one, I sell the kit with pcb, drilled+engraved enclosure and BOM/Build Guide included on my site. There's also a great demo video of it from the NoiseGeneratorFX guys I'll put at the end. Here's more specifics on the pedal...
A preamp, overdrive, and distortion ("amp in a box") pedal based on the Sunn Concert Lead guitar amp. The preamp section with 3 band EQ is a direct clone of the silverface Sunn circuit dialed in to sound like a cranked amp. Switch the distortion in and turn up the 'distort' knob for massive Sunn distortion tones, and use the Boost switch and Boost potentiometer to control an additional on board 21 dB volume boost. A toggle switch allows you to place the boost either pre or post for boosting into the distortion (pre) getting even more crushing Sunn distortion tones or using after the distortion (post) as a clean volume boost for lead/solo playing. The boost can also be used independently of the preamp and distortion circuitry to access the clean boost for the rest of your signal path at any time.
(https://i.imgur.com/SFmpIwul.jpg)
(https://i.imgur.com/iQMCkKel.jpg)
(https://i.imgur.com/U1hPOzCl.jpg)
(https://i.imgur.com/moYZbIDl.jpg)
(https://i.imgur.com/OHL2gLCl.jpg)
That thing sounds forkin' awesome.
8) 8)
hot!
Very nice! The equaliser in the video looks awesome too.
Excellent and very well presented for both pedals! Top notch stuff, best of success with it!
Incredible work, that thing looks and sounds amazing, and it dooms HARD! Might have to pick one up once I clear a few projects off my bench!
Loving this pedal so far, thank you for your hard work in putting this project together. Looks awesome too!
Woah! Great knob selection, and excellent work on the clean build! Glad you're digging the pedal, thanks!
What are those relays for? Looks like 3PDTs are for switching.
Superb graphic design on that.
Damn, I wish I had room for that on my pedalboard .... but my distortions have only one rail of a Pedaltrain Novo.
Looks great, sounds awesome. Nice work!
Quote from: (DEAD)fx on June 11, 2019, 10:38:46 AM
Woah! Great knob selection, and excellent work on the clean build! Glad you're digging the pedal, thanks!
I haven't tried with humbuckers yet, but it sounds great on my Strat with Lace pickups!
I'm building mine now. Thank you for the inspiration!!!!
-Steve
The relays are for controlling the signal routing of the Pre/Post switch for the Clean Boost circuit. That toggle switch simply acts as a control voltage switch to turn on the signal relays which route the boost in the circuit. Thanks for all the comments/questions!
I'm on a bit of a Sunn pre thing lately, but most DIY projects circle around the Beta Lead & Model T. This is the only Concert Lead kit/PCB I've come across; however, (Dead)FX seems to have discontinued the kit and doesn't appear to be returning e-mails about it. Is anyone aware of another DIY project based on this amp's preamp? (I'm also interested in leads re: the Coliseum bass pre, if there are any around.)