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DIY Stompboxes => Building your own stompbox => Topic started by: nooneknows on June 15, 2004, 05:06:19 PM

Title: Menatone red snapper
Post by: nooneknows on June 15, 2004, 05:06:19 PM
Hi,
I heard the red snapper of a friend of mine. What a grat pedal!
It seems a Ts9 wthout the 'hoink' of a Ts9.
I didn't open it and I know the schematics is top secret, but I'd just like to know if it's a polished Screamer or if it's a more complex design, does anybody know it?
thank you,
bye
Title: Menatone red snapper
Post by: cd on June 15, 2004, 05:09:49 PM
Take a TS style circuit and remove the input/output buffers, like on the Son of Screamer.  Add asymetrical clipping.  Increase the possible gain of the circuit (i.e. Drive control.)  Add a variable low pass filter in the clipping loop, adjust other values to taste and you're done.
Title: Menatone red snapper
Post by: nooneknows on June 21, 2004, 04:48:18 PM
thanks!
what do you exactly mean with "a variable low pass filter "? Is there any example around?
thanks again!
Title: Menatone red snapper
Post by: cd on June 21, 2004, 10:10:07 PM
In short, a low-pass filter allows lows to pass through (i.e. cuts high end). Similarly, a high pass filter allows highs to pass through (cuts lows).  How do these apply in a TS circuit?  Start with the Technology of the Tubescreamer article at GEO:

http://www.geofex.com/Article_Folders/TStech/tsxfram.htm

You may also want to study the schematics of the Boss SD-1, OD-1, FD2, etc. to get an idea of how the tone is shaped with various EQs.  Then check out this article for more on tone shaping, cut off frequencies, and EQ in the TS circuit:

http://www.muzique.com/lab/fatt.htm

This can be used to calculate the value of a low pass filter:

http://www.muzique.com/schem/filter.htm