‘MultiCab Simulator’ circuit build

owlexifry

Tele-Meister
Joined
Feb 10, 2021
Posts
241
Location
Adelaide, Australia
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found this layout and was curious to see how it actually sounds, so i had to build it

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- re-purposed chocolate box does the job for now
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running on 9V supply, it’s actually not as bad as i thought it’d be.
the B, T, F controls are fairly interactive and can cover a broad range of tones.

playing high gain tones it tends to fart out a little on low notes, but a tubescreamer/overdrive helps this a fair bit.
otherwise for blues, rock etc, it’s pretty good.

gonna try it at around 15-18V with x2 (used) 9V batteries in series, and see if there’s improvement.
 

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edvard

Friend of Leo's
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May 15, 2016
Posts
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Location
Bremerton, WA
Put a switch to change that input cap between the existing 100㎋, and a 10㎋. Those high-gain tones won't fart out anymore.
 

owlexifry

Tele-Meister
Joined
Feb 10, 2021
Posts
241
Location
Adelaide, Australia
Put a switch to change that input cap between the existing 100㎋, and a 10㎋. Those high-gain tones won't fart out anymore.

great idea, thanks for the tip!
might try a few different values as well (22nf, 47nf) and see which works best without cutting too much low end
 

edvard

Friend of Leo's
Joined
May 15, 2016
Posts
2,391
Location
Bremerton, WA
Depends on what kind of tone you're going for. Most modern high-gain sounds cut the bass pretty drastically up front, then add it back in later. The Fortin booster pedals have a wicked 18dB slope between 80Hz - 1000Hz with a bit of a peak at 1000. That keeps the baritones and 8-stringers in line, LOL.
Dropping the bass at the cab sim I think would work well for keeping the bass a bit "woolly" coming from the preamp, while still avoiding the farts.
 




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