danelectro fab tone

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danelectro fab tone

Postby jinx1499 » 20 Aug 2010, 07:37

just bought a fab tone online by accident.. :oops:
do any of the bright minds on here have any ideas on how to pimp this sucker??
thanks in advance
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Re: danelectro fab tone

Postby JiM » 02 Jan 2011, 00:53

The Fab Tone schematic was posted here: http://www.freestompboxes.org/members/soulsonic/schematic/danelectro%20fabtone.gif

I will have one on the bench soon, i'm going to try out some mods in it. The first idea is to mess with the clipping diodes ...
I'll keep you posted.
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Re: danelectro fab tone

Postby TheShadowKnows » 01 Feb 2012, 08:36

I found this mod on the internet, just do a search. First remove the clipping diodes D4, D5 to get rid of the chain saw sound. Then remove C5 to get rid of some of the mid-scoop. The link to that mod is here:
http://experimentalistsanonymous.com/bo ... 151.0;wap2

Those mods actually make the pedal useful. The only caveat is that there's still too much gain even fully turned down, but it's a good gain. And also the transition on the treble control from bassy to crisp is about a milimeter. I'd like to figure out how to reduce the gain and also get more 'range' from the treble control as opposed to turning it 1 mm and you're smack dab in the treble zone.

There you go. Easy mod. just remove one leg of the components and you're done. Add a switch and PRESTO! You're back to chain saw ville.
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Re: danelectro fab tone

Postby JiM » 05 Feb 2012, 18:45

This reminds me to document the mods i've done to this beast ...
It's a mainstay on my pedalboard now, so i'm digging into my memories. IIRC, i removed just one clipping diode, changed the gain pot wiring to be more progressive (look at a Marshall Shredmaster schematic), removed J6 (taking the bass control gyrator out of the circuit) and connecting J4 instead. The bass control is now a "bass and treble" control, i.e. a mid scoop.

Full Gain, full "bass", treble at 2 is a nice metal/fuzz tone.
Everything at noon is great for rock.
Lowering the gain goes down to crunch territory (a bit difficult to dial, the knobs are very sensitive).

Sorry, no time to draw a schematic or take gutshots now. But i'll do it !
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Re: danelectro fab tone

Postby RomanyStew » 14 Jul 2013, 22:20

I had been searching for info on this pedal when I came across this great site.
I had bought the Fab Tone (used) a while ago and never really used it,just too much gain on it.
The mods described here have made a big difference,
many thanks for them.
I cut the diodes D4 D5 and removed the Cap at C5,now it's more usable.
Trying a bit of tweaking on it and found that a 47uf non Polarized Cap at C5 will calm the circuit down a bit,
but still give a nice tone.
Still looking at ways to reduce the distortion(FAB) at it's lowest level.
I feel it's still too strong and I'm looking for more of a crunch sound.
The pedal has a lot of potential.
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Re: danelectro fab tone

Postby Staypuft1652 » 26 Feb 2017, 02:16

Thanks, good tips.
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