(https://1.bp.blogspot.com/-O4atYkOu8D8/WFg708SfIEI/AAAAAAAAEcs/8GjfWgT9PpIpiByyB3RhlCPLh2t8Q2mIQCK4B/s640/EQD%2BBellow%2Bschem.png)
Built it time ago, really nice fuzz.
Not too much compressed/fizzy, very close to a tradicional distortion: a huge amount of low end.
I tried 2N5457 and J201: both with good (almost the same) result.
I recomend to push it with a SHO kind booster: it turns rich in harmonics and compression, without fall in annoying noise.
Someone says its very close to "Bazz Fuss" design.
I tried a simple treeble roll off: but it have a really nice amount of bass itself. Will be a redundant muddy potentiometer.
I'll try a Big Muff there..
Which mods do you recomends??
Or where do you recomend to change some values??
A good candidate to a tiny enclosure, or to put it inside the guitar.
Scarlett Johansson uses a Burst Box with her Telecaster.
Quote from: Hatredman on July 14, 2017, 06:42:43 PM
Scarlett Johansson uses a Burst Box with her Telecaster.
Oh..c'mon!! Why is she so perfect!?
So what is going on with this design?
Topology wise it's a Bazz Fuss, but the choice to use a JFET across the Darlington is very peculiar.
If it were a BJT, I'd understand, but the JFET Gate has practically infinite Input Impedance, so how is any current passing through to the Q2 Base???
It could be that the MPSA13 is so high-gain, the guitar signal can turn it on, but then why use the JFET at all?
I'm left thinking the JFET:
a.) Does Nothing
b.) Adds some nominal series resistance that slightly varies with how much current Q2 is pulling. (ie. does nothing)
Thoughts?
> So what is going on with this design?
The FET is not biased in the active zone.
Consider this equivalent:
(https://i.postimg.cc/YhPv6chm/EQDBellows-equiv.gif) (https://postimg.cc/YhPv6chm)
Exactly. And the jfet "body diode" is a bit softer compared to a regular Si signal diode.