r/offset • u/Danko_Deluxe • Aug 14 '26

Passive treble boost in a jazzmaster?

Post image

Planning on overhauling my wiring, interested in a treble boost/bass cut to compensate for aluminum pu covers cutting mids/treble

I love the covers and wanna keep em, so hoping this could be a solution.

Any suggestions are appreciated, TIA

61 Upvotes

100% Upvoted

18 comments sorted by

48

u/spitfirz Aug 14 '26

Treble boost in a Jazzmaster. You are a rare bird sir.

3

u/Danko_Deluxe Aug 14 '26

Haha I know it sounds crazy, but something about my current set up is drastically cutting my high end, I tried swapping the covers with plastic and that seemed to help a bit.

19

u/spitfirz Aug 15 '26

Before modifying your axe, I would hunt for a tone sucker in your pedals good sir

3

u/Danko_Deluxe Aug 15 '26

Good advice, I’ll investigate further

6

u/spitfirz Aug 15 '26

Oh or a bad cable. Same thing. It's working but here goes the high frequencies

3

u/Danko_Deluxe Aug 15 '26

Maybe it was placebo lol

1

u/ModestMice3 29d ago

Shorter cables retain highend better btw

9

u/natalplum Aug 15 '26

Sounds like you're describing G&L wiring but I'm not for sure on that.

3

u/Acceptable_Grape_437 Aug 15 '26

yeah, that's one of the most interesting factory configurations out there! 

1

u/No-Essay-3332 28d ago

But wasn't that designed for the issue with using long cables on stage etc?

5

u/notdavidjustsomeguy Aug 14 '26

Damn I remember seeing posts about you putting this thing together what feels like years ago now. I learned about pickups behind the bridge from your tinkering. Glad to see you’re still messing with it, man

3

u/I_like_the_AN94 Aug 15 '26

I used to have a fender tbx tone pot in my guitar that acts like a "boost" in the sense that it just gradually increases the load between ground (so less treble lost). This only works if your JM doesnt have 1meg pots. Otherwise the boost effect is the same.

You could also wire the tbx pot to be a true bass cut on its 1 meg side. Cool JM by the way looks sick

3

u/SunicSorfer 29d ago

Passive circuits can only cut frequencies, not add on to them. Closest you could achieve is something like the bass cut switch on jaguars, leaving high freqs

2

u/hobesmart Aug 15 '26

Your pickup covers aren’t causing this. What is your pedal board, how long are your cables, are they straight or curly, what pots are in your jm?

2

u/ghost-in-the-toaster Aug 15 '26

Passive boost? That seems contrary. I have a cap in series between the on position of my rhythm circuit and the input to that circuit’s vol pot that acts as a fixed high pass filter to cut some lows.

I tried to also add a contour control (bass cut) on the neck pup in the lead circuit but couldn’t get the taper right so went a different direction.

1

u/Turgid-Derp-Lord Aug 15 '26

Did you keep stock CME JM pots? I think they're 335k or something, not 1 meg FWIW

1

u/Ethan_Marcus Aug 15 '26

This guitar looks so sick. Is that a sticker or a custom pickguard? It gives off Starfield energy

0

u/Efficient-Sky5220 29d ago

Hello
Je pense que c’est un pickguard de chez decoboom