timtam wrote: ↑
Fri Jul 12, 2019 9:39 pm
That does suggest that the noise source is not airborne EMI from non-amp sources getting into the guitar, as that would be similar when on batteries. When on AC power and noisy, is there much of a noise difference when touching guitar metal (ie grounding yourself) or not ?
A bit of difference (less noisy) when I touch strings/metal using AC - but no difference using battery (still quiet.)
Can you battery-power either amp or just one ? Was the other amp AC-connected and ON at the same time as battery-powered rig was quiet ?
I wasn't totally clear in the post - but both the Vox and Champ are only AC, the battery powered amp (that I can also plug in AC using an adapter) is a small portable test amp I have on my workbench. I didn't test both the battery and AC at the same time, though I went back and forth many times in a short span.
Soloist is HB or SC model ? In any case, this suggests either that it's not a systemic power problem (somewhat contrary to battery findings, ), or that that guitar is very immune (HB ? shielding ?).
Soloist is humbuckers. I have one other HH guitar where the noise still does come through somewhat on AC, but this Soloist is absolutely silent. The single coil guitars that are RWRP still have a bit of noise as well - not as much as the Jazzmaster though (worth it to mention - my two other Jazzmasters are also in that middle-area of being prob. too noisy using AC, but less so than the particular Jazzmaster I'm talking about.)
JM is direct into amp with no effects and amp is direct into wall (no power boards or extension cords) ?
Same noise with both amps ?
Has JM been modded ? ie have you verified RWRP ? Is it shielded ? Is shielding grounded ?
Yep - no pedals (even tried using one as a buffer, no dice) straight into amp, amp direct into the wall. Same noise with both amps. JM has def. been modded; it's an American Special which did not originally have shielding (so I added copper tape.) Grounding works and is connected to the copper, has continuity through my multimeter - I seriously checked everywhere I could think of, re-did solders etc. It's definitely RWRP, using the battery power (or interface) I get 60 cycle with individual pickups- but silent on 'both.' Come to think of it I take it to my guitar teacher's studio and play through his amp no problem.
It's strange - for a fairly long while my amps were packed up while work was being done on the house (no electrical though,) and I only used my interface to play. Now I pulled the amps out and I'm hearing this.
King Buzzo: I love when people come up to me and say “Your guitar sound was better on Stoner Witch, when you used a Les Paul. “...I used a Fender Mustang reissue on that, dumbass!