My Crunch Box Version

[Goodrat]

With those 3 position switches you use, you should take a look at my idea using an on-on-on switch (SP3T).
Skip ahead to diagram G
http://rickviola.com/electronics.htm

[J0K3RX]

On the severe, what's the deal with the 100 ohm in series with the 1K?
Did I get something wrong there?
That makes no sense.

Yeah, that looks like a goof if you ask me... Here is one of many schematics I have found for the severe.

[J0K3RX]

Here is a video demo of the "Box of Hammers" layout (CB variant) that I posted on page 2. This is a double distortion being boosted with a TS808 circuit... The right side is the exact layout as on page 2.
It's being used as a preamp going direct into the fx return on a Blackstar, so it's only going into the power section bypassing the amps preamp.

I sent it to Mark Thompson of ShredKnowledge and he sent it to Sam Bell to demo... Sam is a Beast \m/ \m/

<a href="http://www.youtube.com/watch?v=-YrS-oyCHPI" target="_blank">http://www.youtube.com/watch?v=-YrS-oyCHPI</a>

[J0K3RX]

With those 3 position switches you use, you should take a look at my idea using an on-on-on switch (SP3T).
Skip ahead to diagram G
http://rickviola.com/electronics.htm

I have used and still use the on/on/on switches on some configurations but I like the sound without diode clipping so I use on/off/on... No diodes give a more vintage sound where the diodes give a more compressed modern sound. Plus on/off/on are easier to find.. You could always use a 6 way rotary switch as well is you want to have a lot of configurations... 

[Goodrat]

The extra 100 ohm is on this one too.
http://3.bp.blogspot.com/_XBLxtjUxez0/TSaZ1pRQGdI/AAAAAAAAAFM/z4EeVEZAFUM/s1600/SEVERE.PNG

[J0K3RX]

The extra 100 ohm is on this one too.
http://3.bp.blogspot.com/_XBLxtjUxez0/TSaZ1pRQGdI/AAAAAAAAAFM/z4EeVEZAFUM/s1600/SEVERE.PNG

I believe you can leave out the 100 ohm... The original Severe has them both so it's not a goof.

[J0K3RX]

I think when I get some time I am going to try what WGTP said and try the diodes in the FBL of the second op amp! I haven't really done much of that for whatever reason but I know that all of the pedals that I have built that use this seem to sound and feel better! Maybe have it switchable from fbl to gnd? I also have quite a few BS170's... Gonna try that also as suggested..!

[Goodrat]

I thought I would add this:
http://www.rickviola.com/images/CrunchLowRV.jpg
I lowered the resistors but kept the same gain and freq response.
It sounds the same, but less hiss.

So here is the latest and greatest of my Crunch Box with simple tone:

With Presence
http://www.rickviola.com/images/Crunch2RV.jpg
Layout:
http://www.rickviola.com/images/CrunchLayout2RV.jpg

Without presence:
http://www.rickviola.com/images/CrunchRV.jpg
Layout:
http://www.rickviola.com/images/CrunchLayoutRV.jpg

I'm done with this

[michael_ibrahim]

Well done lads. You guys are my heroes