Author Topic: more bite from my Runt build (SOLVED)  (Read 250 times)

powerplayj

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more bite from my Runt build (SOLVED)
« on: February 04, 2020, 09:20:44 PM »
My cut pot nearly entirely CCW, is almost perfect.  When turning CW, It gets muddy way too soon compared to a stock Rat.  I have checked cap values which seem ok, no solder bridges could be found and I typically double check my resistor values before I populate the board.  is there a critical component which the lack of tight tolerance could critically affect the lack of treble getting through?  I'm using metal film resistors.
« Last Edit: February 10, 2020, 01:24:14 PM by powerplayj »

jimilee

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Re: more bite from my Runt build
« Reply #1 on: February 05, 2020, 08:38:18 AM »
Did you use a log taper or linear taper pot? Linear tend to get there quicker in any build.


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powerplayj

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Re: more bite from my Runt build
« Reply #2 on: February 05, 2020, 11:39:38 AM »
All my pots are 100kA, I believe...just like OEM Rat.  My problem is that I would like a bit more treble than what I get at full CCW on the pot. 

madbean

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Re: more bite from my Runt build
« Reply #3 on: February 05, 2020, 02:15:53 PM »
At full CCW the tone circuit basically does next to nothing as far as rolling off high end. You could try a 47pF in place of C4. That would give you a bit of high end back.

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powerplayj

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Re: more bite from my Runt build
« Reply #4 on: February 10, 2020, 09:34:03 AM »
Changed out C4 for another ceramic 100pf cap.  ....Huge difference!!!..... much better response above and below the desired cutoff frequency.   I  will assume I got a bad original cap or one that had an extremely high (+) tolerance.
« Last Edit: February 10, 2020, 01:25:44 PM by powerplayj »