Catalinbread - Formula No. 5  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

Re: Catalinbread 5F6 formula 55

Postby roseblood11 » 20 Jan 2018, 21:05

BUMP
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Re: Catalinbread Formula No. 55

Postby matt239 » 05 Apr 2018, 16:35

roseblood11 wrote:I built that years ago...
The Formula No.55 is a completely different circuit


What's different? (Formula 55)
Howard says it follows the Fender circuit "exactly."
Is it still mu-amps?
Or now single jfets?
Or mosfets?

Sounds good.
Seems to have improved low gain sounds..
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Re: Catalinbread - Formula No. 5

Postby roseblood11 » 05 Apr 2018, 22:09

So many great Catalinbread pedals never got traced:

Formula 55
Formula 5F6
Karma Suture
...
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Re: Catalinbread - Formula No. 5

Postby coltonius » 16 Dec 2018, 03:22

Sorry for the necro-bump. I mostly lurk and hardly ever (never) post, but I thought this was worth noting: the Formula 5F6 has been traced! I sent mine over to Robert at PedalPCB, who now sells a PCB. As some might have guessed, the layout is identical to the DLS MKIII- and indeed it uses the same PCB with the same S. Bass & S. Lead designations inside.

Carry on!

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Re: Catalinbread - Formula No. 5

Postby KarenColumbo » 16 Jan 2019, 19:52

great news indeed! Been waiting for this one and tried to build one by ear - The AMZ "Tweed Stack" almost got me in the zone, so at least i guessed right :) Ordered a PCB from GuitarPCB and BB'd it using the schematic provided there while waiting for the postman. Since it uses MPF4393 which are not readily available here in good old Austria I substituted MPF102 and some of my trusty 2N5457, will try with NTE457, though. As usual the GuitarPro demo video has a killer sound, the "original" ain't - but that's real life I guess.
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