Ace Tone - FM-3 Fuzz Master  [schematic]

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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Bernardduur
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Post by Bernardduur »

Is R5 really 150k or is it a typo?
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Greg
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Post by Greg »

Bernardduur wrote:Is R5 really 150k or is it a typo?
It's really 150K.
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Dan N
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Post by Dan N »

Greg_G wrote:
2SC1000.. all caps are Greenies except the 250 and 3300pf which are ceramic.
Argh, none of these in my parts stash. I think they are Toshiba made. I'm attaching the Japanese data sheet. Looks like they come in GR and BL. Mr. Kakehashi used GR in the AD-50, so I'll probably go with that range when I build one.
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Greg
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Post by Greg »

Dan N wrote:
Argh, none of these in my parts stash. I think they are Toshiba made.
I built a clone with BC547s from a bulk pack and it sounds great.
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Dr Tony Balls
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Post by Dr Tony Balls »

Anyone have the schematic for this to re-upload? Its not longer here.

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Post by jrod »

I should. I'll check when I get home.

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Greg
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Post by Greg »

Here it is:
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FM-3fsb.jpg
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Post by jrod »

Cool...that's what I have, too.

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Post by soggybag »

Has anyone built this? I was thinking of building it.

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EmmG
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Post by EmmG »

I did. R5 at 150k is a really unusual value there and helps make this the fuzziest, most distorted Big Muff I've ever built.

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Post by T.M »

Greg wrote: 28 Sep 2011, 00:44Here it is:
Wow, you made this schem all the way back in '09. If you ever took pics of the component side of the PCB or can take some I'd love to see them. Can't find them for the FM-3 anywhere on the net.

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