De-mud JB/Jazz

tgv1975

New member
Dear friends,

I have a JB/Jazz set and I just can't seem to get rid of the mud. First, I am aware that these PUs should be anything but muddy, but bear with me, please.

SYMPTOMS (BOTH PUs):

* the three low strings, D to E (standard tuning) sound as if through wool, while the other, high strings seem fine
* there is serious boominess around the low F# through to A# (92.5-116.5Hz)
* there is an annoying lack of definition for fast passages on the low three strings, all across the fretboard; if I do a drone on one string (say A) and play something fast on another (say D) it's mud fest all the way
* in short, these strings sound more or less dead, dull at the best
* distortion obviously accents these problems ten fold; there is no bass tightness whatsoever

SETUP (at least decent, IMO):

GUITAR: Schecter C1 Classic: maple neck-through with walnut stripes, rosewood fingerboard, mahogany body (wings). This neck-through construction basically yields a maple guitar, as the neck is the most important. The acoustic sound is articulated, has plenty of high-end, and the bass seems tame. It has a 25.5'' scale and 24 frets. The action is about 2 mm at the 17th fret - I experimented with it, too. Plugged in, it screams with a lot of highs and little bass, that needs to be increased on the amp, which achieves this flabby, boomy, wooly bass I'm speaking of. It lacks low mids, I think. I tend to find myself having to roll off the treble on the amp (to a maximum of 5) and presence, and up the mids (sometimes to 6-6.5) and the bass (to 8-9; I know, you'll say "dude, here's your problem!", but without it, there's very little bass to be had, everything sound very flat, uni-dimensional; the problem is the bass control on the amp seems to amplify the wrong frequencies, or, rather, has to work with the wrong low frequencies to begin with). Pickups are as stated, Jazz neck/JB bridge, heights are 3.5mm Jazz, 2mm JB, which causes the PUs to actually be lower on the bass side, screw raised circa 1-1.5 mm on bass side (as of now, I tried many configurations short of cutting the screws - removing them all together kills all fatness)

STRINGS: Ernie Ball Slinky(10s), GHS Santana (9.5s), GHS Boomers (10s), D'Addario EXP 110 (10s) - all with the same problem as above

ELECTRONICS: Volume and tone Bourns 500K audio taper push-pull, 5-way super-switch (Fender original parts) (Pos 5: neck full, Pos 4: neck split outer coil, Pos 3: both humbuckers, parallel, Pos 2: neck full + bridge outer coil, series, Pos 1: bridge full). 0.022uF Russian PIO cap, '50s wiring. The volume pot has a resistor between input and output lugs, to correct taper. Although this is a high-quality audio taper pot, with these pickups it works just like an linear one (basically all the action takes place between 10 an 8), hence the need for the resistor.

CABLE: 3-wire cable (two of them soledered together, of course), with Neutrik TS jacks

AMP/MULTIFX: I use a Frontman 212R, a Zoom G5 (either in the amp return, or direct into the mixer, or with headphones), or Amplitube 3 on my PC - the above problems persist in all scenarios.


WHAT I'VE ALREADY TRIED:

* string changes, different brands/gauges
* pick-up height/screw pole adjustment (I've done this so much I'm sick of it by now)
* EQ: with -3 to -6 dB cuts with a Q around 4-8 at 80Hz and 250Hz things clear up rather decently, but the cost is some overall loss of "body", noticeable especially in the split/parallel positions; this is a very unsatisfactory solution, especially since I do not want to EQ all my presets this way. It is too much.
* other common sense stuff, like less distortion, lower the bass on the amp or amp sim, experiment with different cab sims etc.. I even tried different picks and tried to adapt my playing style (i.e. excessive attention to muting, harder attack, all in the attempt of gaining more definition - but these take you only so far)

None of the above really worked.

Now, I was always of the opinion that pickups should be changed only as the last resort, after trying at least all of the above. But now I'm at a crossroads, having done all that. I am still unhappy with the tone. I do appreciate that my "muddiness" is another man's "warmth", but I really think something is off. I'm especially disappointed by the lack of definition in the bass notes, where I love to play very fast passages with distortion, sometimes using pull-offs/hammer-ons intensively, therefore not benefiting from the pick attack on those legato notes, and with this guitar the effect is completely lackluster due to utter lack of definition. Chords are also rather muddy, which is really puzzling, as I'm using the Jazz on a 25.5 inch 24-fretter!

I have a Custom SH-5 in a Strat clone, bridge position, and that is the embodiment of definition and "chug". However, that's a completely different instrument, so I can't venture an opinion as to how that would sound in the Schecter (will probably try it). I'm not an extreme metal guy, but I do like "chug" and definition in the bass when it comes to fast riffs and scalar runs, and I don't expect single coil clarity from a neck HB, but still.

Do you have any other advice? Or should I start look for different pickups at this point? If so, what would you recommend in this particular instance?

Thanks in advance!
 
Re: De-mud JB/Jazz

First of all, I'd redo the wiring. You might want to try the JB wired to just the 500k volume and straight to output jack. No taper correcting resistors :wrf:, no treble bleed, no switches, no tone pots, "no nothing" just bare bones and work from there. You might have a bad solder joint somewhere.

Secondly, the Frontman 212 isn't really a wonder of an amp, to put it mildly. I recommend getting rid of it in a rather urgent manner. A closed back cab is preferred for chugga chugga.

Good luck!
 
Re: De-mud JB/Jazz

Check the solder joints, especially to the output jack.

I had a set of pickups recently installed that sounded okay at full volume and then when I rolled off the volume, it sounded like a blanket was being laid over my amp. It was the solder joints at the output jack.
 
Re: De-mud JB/Jazz

definitely start by removing as much wiring that is not totally needed (i.e., treble bleed, etc.). take a multimeter to as many of the solder points as you can get to so as to see if there is something that is messing with the signal.

have you tried the guitar with a different amp? better yet, take the guitar to a music store (as if you're amp shopping) and run it through several amps, so that you can be for certain if the amp has something to do with it.

those are pretty much the same suggestions you've already gotten here. other than that, have you tried these pickups in a different guitar? this set has been a staple for decades and it's a pretty reliable setup for a lot of people. while I think that anything is possible, without going through some of those other steps, the initial indicators are that it could be isolated to your rig in this instance.
 
Re: De-mud JB/Jazz

OK.

I did a complete electronics overhaul of the guitar - meaning I checked or re-did all solder joints. I discovered a cold joint on the white wire of the neck Jazz (which may well be the source of my troubles I posted in another thread, I'll wait and see). I removed the taper-correcting resistor (this made no difference in the tone, but the audio taper returned promptly, with most action between 10-8).

I tried both PUs direct to output jack - not much improvement with respect to the aforementioned issues. I went ahead and switched the JB with a Duncan Custom, and that made a significant difference in the bass, but still not quite where I want it to be. I actually like the Custom more than the JB in this guitar. It pushes the amp model into distortion way sooner than the JB. Of note, the Custom does not have a cover. Conversely, the JB in the Strat copy sounded pretty great, better than in the Schecter - significantly more focused, for want of a better word.

I re-did the 50s wiring, changed to a 0.01uF Russian PIO cap - no difference with the tone on 10, as expected.

I created a new patch in the Zoom G5, and messed with the settings again. The JB in the Strat sounds great. The Custom in the Schecter sounds better than the JB, yet not quite where I'd like it, although is sounded awesome in the Strat, with the same settings.

All of the above lead me to believe there may be a mismatch between the guitar wood, pickups, and my rig settings.

I never played this guitar through a stellar amp, probably I should, indeed, try it with more amps.

Just to clarify, these pickups do not sound "bad" at all in this guitar, just on the muddy side, to MY ears, and perhaps someone else would call it "warmth".

I will keep the Custom in the Schecter and the JB in the Strat for a few days, just to get familiar with the new tones, and report back.
 
Re: De-mud JB/Jazz

Having played one C-1 Custom (i think) with its thick feeling and sounding neck through, I had a gut feeling that the DC would work better here than the JB. You see, there's often a bit more subtlety involved in matching pickups to planks, than just following general statements like "the JB sounds great in bright guitars and bad in dark guitars", or "the JB rocks in alder superstrats & sucks in les pauls". Even though they might be statistically more often true than false, there are still guys who swear by their JB loaded Pauls or S-series Ibbies.

The head of Skervesen guitars once said that you need to have a respect for wood and the voice it wants to sing, because not all mahogany guitars sound muddy or dark, and not every maple guitar sounds overly bright. I've learnt that two guitars with very similar spec might sound completely unlike.
 
Re: De-mud JB/Jazz

Oh, I will! Even if only because I never have. Does it "deaden" the tone, or does just what it says on the box (block the lows)?
 
Re: De-mud JB/Jazz

Oh, I will! Even if only because I never have. Does it "deaden" the tone, or does just what it says on the box (block the lows)?

Never used it on a JB or a Jazz, but it worked just fine for my buddy, so it will clean up pretty nicely. Let me know how it goes! :bigthumb:
 
Re: De-mud JB/Jazz

I've done it for the Jazz, using a 0.047uF Russian PIO (not that the material would make much of a difference IMO). I have tried 0.033uF, 0.022uF, 0.010uF, and while they did clear up the bass nicely, they sort of gotten in the low mid territory, esp. the 0.001uF, with loss of "body", and an almost "acoustic" quality in the bad sense. The 0.033uF would have been almost acceptable, but the cutoff frequency was a bit too high, too. Perhaps more than in other situations, these values really are not gospel, and one should experiment with them depending on the guitar and pickups.

The 0.047uF took care of most of the boominess, without robbing the tone of its body, in a subtle, but definitely effective way, most obvious with distortion, therefore clearing up much of the mud. The downside is in the split positions, where the lower notes lose much of their body and "snap" - therefore I wired the cap so that it is only engaged when the pickup is in full humbucker mode, and out of the circuit in the split positions. Works like a charm. This was a great suggestion, thanks!
 
Re: De-mud JB/Jazz

Hi all,

I am following up, as promised, with some tone samples.

I ended up with 24 recordings, and a lot of explaining to do, which would have really been too much for a post here, therefore I wrote a full blown article regarding the JB and Custom comparison in two of my guitars, in my attemps to de-mud it and achieve more clarit.

Please see it here, there is a Soundcloud player (scroll down) where you can listen to all the samples.

Not mentioned there, I have done the de-mud capacitor trick (see above), and that cleaned up the Jazz quite well.

Thanks for all your help here, folks!
 
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