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PostPosted: Fri Apr 28, 2023 7:40 am 
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Hey All!
So been using my lil breaker for some time but just picked up the Marshall reissue blues breaker pedal. The Marshall has a tad bit more mids. Not tube screamer, but enough that makes my lil breaker sound a little thin. Any idea what cap change might add a tad bit more mids?


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PostPosted: Fri Apr 28, 2023 10:24 am 
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I'd try increasing the value of the C4 cap (see PCB map below). I'd start by going to 47n and see how that sounds. If too much mids, decrease to 22n; if not enough, go up to 100n. You could also increase C1 to let more bass frequencies in at the input of the circuit, but I wouldn't do that until you've tried changing C4. BTW, using break-off single inline (SIL) sockets on the C4 eyelets will let you audition different cap values without constantly needing to desolder/resolder.

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PostPosted: Fri Apr 28, 2023 11:25 am 
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Thanks for the quick response. Looks like I know what I am doing Friday night.

Also.. does it really matter what type of caps to use? I have a kit of various parts I bought on Amazon like a year ago.


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PostPosted: Fri Apr 28, 2023 11:59 am 
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Awguitar wrote:
Also.. does it really matter what type of caps to use? I have a kit of various parts I bought on Amazon like a year ago.

Very little. In that capacitance range, you're looking at some kind of non-polar film cap, but any of those should work.

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PostPosted: Fri Apr 28, 2023 12:12 pm 
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One last question. If I wanted to tame a tiny tad of high end. Which cap does high end?


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PostPosted: Fri Apr 28, 2023 1:18 pm 
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Try increasing C2, the little ceramic cap.

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