Tightening Up a Diezel Lil Fokker

[Bad.Seed]

Just picked up a Lil Fokker yesterday. I love the overall tone of these amps, even more so than my Herbert MKI, BUT the low end is even looser/boomier than I remember.

I've tried a couple different cabs and boosts out front, but can't get rid of the tubbiness without losing all of the low end.

Anyone here tried any modifications to the circuit to tighten these up? Guessing no, but figured I'd ask.

I really love the voicing of the amp. Just want tighter/more percussive low end out of it, similar to the Herbie.

 

[JHowell13]

Who you calling tubby

 

[stratjacket]

Have you tried it with something like an Airis Savage Drive or a pedal with a similar “tight” control?

 

[Bad.Seed]

Have you tried it with something like an Airis Savage Drive or a pedal with a similar “tight” control?

No, but I never really thought the Airis tightened things up more than most of my other drives without cutting too much ass end. It's inherent in the Character of the Fokker, like it has a low B+ or something.

 

[CornNutz]

This is typically done via the first stage coupling cap. However other things do contribute, such as voltage dividers, etc.

I'm not familiar with the Lil fokker circuit but you could try to trace out the first stage, and see what the coupling cap value is. If its something like a .022uf, then replacing it with a .0022uf will tighten it up.

Other places to tweek: cathode bypass caps (make them smaller value), PI output caps, if they are large like .1uf that can get tubby.

Tip: tweaking values around the first stage usually makes the most profound effect.

 

[Metlupass2]

Look on YouTube for the one Jens Kruse modded. If sounds great.