De-Mud Caps

[Davii]

I've added a de-mud capacitor to a new LP setup, and have started with the SD blog post's suggestion of 0.047uF, but this seems to be too large a value. There isn't an actual issue with mud - I'm just experimenting - so intereted in value recommendations, or info on frequencies attentuated by capacitance value. I've scanned through a few bits on t'internet, but wondered what people might suggest through experience

 

[vinnie1971]

Re: De-Mud Caps

I've added a de-mud capacitor to a new LP setup, and have started with the SD blog post's suggestion of 0.047uF, but this seems to be too large a value. There isn't an actual issue with mud - I'm just experimenting - so intereted in value recommendations, or info on frequencies attentuated by capacitance value. I've scanned through a few bits on t'internet, but wondered what people might suggest through experience

Oh no you have gone in the wrong direction. Standard LP cap is .022uF. For a brighter "woman tone" when rolled back try .015uF or even 0.01uF - my Firebird and El Maya with SD APH1 ALNICO 2 pros have this. Very cool tones.

Check your pots are 500k and try lowering your pickups and raising the pole pieces. If they are covered removing them makes them sound a little brighter too.


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[Davii]

Re: De-Mud Caps

Oh no you have gone in the wrong direction. Standard LP cap is .022uF. For a brighter "woman tone" when rolled back try .015uF or even 0.01uF - my Firebird and El Maya with SD APH1 ALNICO 2 pros have this. Very cool tones.

Check your pots are 500k and try lowering your pickups and raising the pole pieces. If they are covered removing them makes them sound a little brighter too.


Sent from my iPhone using Tapatalk

My tone caps are your standard 0.022uF, though I'm speaking of the capacitor I have in series with the signal output (via a push-pull), rather than the tone controls. Unless I've misunderstood your post?

 

[beaubrummels]

Re: De-Mud Caps

.047uf is a tone cap. SD blogged using it also as a de-mud when wired differently, but guys on the forum noted artifacts with it. The now-famous and commonly approved "Artie's De-mud Mod" is this:

 

[Davii]

Re: De-Mud Caps

.047uf is a tone cap. SD blogged using it also as a de-mud when wired differently, but guys on the forum noted artifacts with it. The now-famous and commonly approved "Artie's De-mud Mod" is this:

I'd seen it mentioned in a recent thread, and had come away thinking I could do the same with the signal in general (rather than the specific de-mud mod between coils), albeit without the resistor shown, and it would be a case of tracking down the best value to attenuate the desired frequencies etc.

I'd just put a 0.01uF in, didn't hear any difference, but I'm now guessing that's due to not having the 500k resistor in play(?)

 

[vinnie1971]

De-Mud Caps

Misunderstood you meant bass cut capacitor in series with the hot output.

You want to start with 0.0047 uF and go smaller if it's not enough. I got a bass cut in a varitone box I made. I use 0.0033 and it cleans muddy humbuckers up really well.



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[Davii]

Re: De-Mud Caps

I ended up changing the wiring, so that the capacitor and volume pot act as a high pass filter (or such) when it's selected, though it was quite late in the day, and I didn't get to test it properly. Now that you've mentioned it, I still have the variwhatsit I pulled from my Mockingbird, I might try to see what values are on that

 

[vinnie1971]

Re: De-Mud Caps

If it's as per the original Gibson design they will be (not necessarily in order)

Bypass ( not true bypass)
.001
.003
.01
.033
.2



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[Davii]

Re: De-Mud Caps

I'll have to dig mine out, and see if I can read the values. Tis not just caps on it if I remember correctly, there's resistors as well.

I'll get around to doing an NGD thread once I've done everything, assuming I haven't gone insane, and made an appearance on local news by then...

 

[vinnie1971]

De-Mud Caps

I'll have to dig mine out, and see if I can read the values. Tis not just caps on it if I remember correctly, there's resistors as well.

I'll get around to doing an NGD thread once I've done everything, assuming I haven't gone insane, and made an appearance on local news by then...

Yes, 100k resistor from hot to bypass terminal and 220k resistor in parallel with each capacitor if it's the original Gibson design.

I made my own varitone box to use in all my guitars


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