freestompboxes.org

That's not a gutshot.. this is a gutshot.

Sorry, this is as good I could get without removing wires.. which I've just soldered back so i can play it..
Not much to see.. a bunch of old Greenies... very cramped build.

Wow. That is a stuffed PCB.

Whoismarykelly wrote:Wow. That is a stuffed PCB.

Yes.. the enclosure and board size is the same as the earlier FM-2, which was a simpler circuit.. so I guess they had to cram everything onto this size board or make a new enclosure.

Speaking of Ace-Tone, I'm just servicing an old Ace-Tone amp......

A *mint* FM-2 arrived this morning before I had to leave for work!!

Sickle wrote:A *mint* FM-2 arrived this morning before I had to leave for work!!

Very nice..
Maybe you could post some gut shots of that for us ?

I thought I'd bump this thread up since I can't possibly be the only one who still wants a look at the schematic on the FM-3.

Or maybe I just need to get a life.

no you most definitely aren't! i too would like to see the little tricks talked about in this box.

Guys, it's traced and I've built a working copy that sounds like it should.
I just need a clear hour or two to draw up a schematic to post (I'm not too fast on the drawing)... and I haven't had it.
I'll try to get it done over the week-end.

If you take a Triangle Muff, the changes are few..
Less gain on the first stage and a 3300pf cap in parallel with the input resistor.
Lower value on the feedback caps (250pf).
Slighty different values on the tone components, but similar effect.
The volume pot is located before the last stage rather than after.

^ Right on! Glad to here of your success GregG. A "Triangle Muff" of all things. I look forward to seeing your schemadix.

Me too!

No more schematic

Please, post again

Here ya go:

Thanks for all your efforts!

So, What were the trannies?

Thank you!

soulsonic wrote:Greg, could you post some gutshots of yours? All the previous photo links in these thread seem to be dead and gone.

That's one of my pet peeves about a lot of the DIY pedals forums -- tons of dead links. I go searching for something, find it, and then there is no file anymore. It would be nice to host all that stuff on some private server so it would stay around longer than several months or whatever.

Dan N wrote:Thanks for all your efforts!

So, What were the trannies?

2SC1000.. all caps are Greenies except the 250 and 3300pf which are ceramic.

Is this a "Y" on the top of the transistors ?

tube-exorcist wrote:Is this a "Y" on the top of the transistors ?

No, there's no "Y" on them tube exorcist.