I bought a SG classic, with dual p-90s, AWESOME sound. I recommend you all check out the p90s if you haven't already, but with everythin good, comes the devil and makes it imperfect. HUM !!!!
they are passive stock gibson P90s and they have a huge amount of hum, i want to replace to EMGs (since most of my guitars have emgs, ehehhee) but i'm afraid they will change the flexible tone i get from these pickups now, anyone has had experience with EMG p90s ? or know of other awesome souding hum cancelling p90s ?
I know seymour duncan makes stacked p90s, but I've had the SH-2 Sh-4 combo once and it sounded a bit too much trebley while clean, i think it's a trend in seymour's pickup, they all sound really trebely and by the sound samples, the p90s sound trebley too, on another note, seymor is coming out with Active 9v Humbuckers (should emg be scared ?) and they claim they perfected and balanced the inputs for upto -14db of hum (seen that on harmony-central).
So please if you know of ways to cancel the hum without changing the tone please please please help
now the Nutz there are up to there regular impishness, and I did not in the description go into the machinations I had to exercise to address the unusual hum of the P-90s, which was louder than that of unshielded strat pups. Worse of course in overdrive modes.
First conduct the full shielding approach of John Atchley's. Different on an SG because of the top routing. So you have to line with foil, copper or condtive paint, the pup routs, and control cavity, and back plate.
You have to make sure there is continuty between all of these, which may take soldering a bare wire through the wire tunnel to the pup rout shields.
A more difficult approach that may be optional, but I had to do it because of the signal separtion requirements of TM-II is occurs because the P-90 typically has one wire inside a woven shield, the woven shield is then solderd to the p90 base and the other end of the coil wire. You can replace the entire wire with a 2 conductor shield wire, or do like I did and just run another 1 wire shielded wire to the pup. Cut the end from the pup that is solderd to the shield ground, and solder it to the new one wire shielded wire. The idea is to separate the pup coil wires from the woven shield wire that goes to ground.
Finally, I still did not like the hum, so I took off the cover, shielded the inside of the cover with copper conductive adhesive tape, and made sure it had continuity to the brass base. That actually seemed to help the most.
Then you follow the star ground instructions applicable to strats and teles in JA's instructions.
Clean, she is quite. I still get more hum in overdrive than desired, and need to run that down, but I was sick of the project at that point.
I postulate that the wider geometry of the P-90 provides a larger "antenna" for capturing 60 cycle hum. But there are real experts here that might explain what is really happening.
The p-90s are more beastly to tame in hum, but with there fullness and bite they kick the buttinskies of strat singles.
lol your story is a bit funny it sounds like when i tore my warmoth up cause it was humming (EMG humbuckers) for hours on end, did all the shielding possible, i think even nuclear bombs won't be able to pollute my cavity anymore. after two weeks of alot of thinking and re-wiring/soldering i found it, that my output jack (one that goes into the wall from the amp) had one of the wires cut (the ground one) so that was making the noise.
I HATE HATE HAET HATE hum, as i'm sure most do, so i conclude that my only choice is for stacked duncans or EMG-p90s ?
Anyone tried those ? especially the P-60 (EMG 60 is a GREAT pickup) and p81 (i dislike the 89 and 85, lacking in tone while clean, haven't tried the 81 in clean yet, but wanna)
would putting epoxy inside the pickup cavity + shileding it better reduce the hum alot ?
Epoxy has no hum-cancelling properties. Shielding it even better would probably reduce your hum a bit more - anything is worth a try.
I'm not sure I understand why a P-90 would be 'more hummable' than any other single coil pup. A Jazzmaster doesn't have that problem, per se, and those are some of the widest, flattest pickups ever produced. If indeed P-90's are more prone to hum, then I'd probably discount the physical size in favor of the way the coil is wound, or even the number of turns on the coil itself.
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