SG electronics fun.

[EOengineer]

Well I wasn’t able to get to the bottom of whatever was happening with my attempt at 50s wiring, so I reverted back to modern and added a .001uf cap and 150k in parallel to form the treble bleed on each volume pot.

Eventually I may pull the PCB and fully rewire to 50s spec but at least initially the treble bleed gets me where I want to go so I’m going to live with it for a couple weeks and then evaluate.

 

[LCW]

Well, now I’ve done it.

I soldered the new caps from the middle lug of the volume pots to the left-most lug on the tone pot and now the pickups sound like the tone knobs are rolled all the way down and the tone knobs don’t do anything.

I assume you mean “leftmost” as if looking into the cavity. Just going by that assumption, it should be right most lug on tone pot. Then the middle gets grounded.

Seymour Duncan has the best diagrams imo:

 

[Eagle]

Well I wasn’t able to get to the bottom of whatever was happening with my attempt at 50s wiring, so I reverted back to modern and added a .001uf cap and 150k in parallel to form the treble bleed on each volume pot.

Eventually I may pull the PCB and fully rewire to 50s spec but at least initially the treble bleed gets me where I want to go so I’m going to live with it for a couple weeks and then evaluate.

The mistake is you still had the other rout live on the pcb.

 

[Sascha Franck]

Parrish treble bleed

Can you elaborate what exactly that circuit is?

 

[HomespunEffects]

Can you elaborate what exactly that circuit is?

It’s a capacitor with a resistor in parallel and a resistor in series. It takes away the extra crispiness of the lower volume settings and keeps the taper of the volume control much better than leaving one or the other resistors out. It’s the best of two versions rolled into one.

 

[Sascha Franck]

It’s a capacitor with a resistor in parallel and a resistor in series. It takes away the extra crispiness of the lower volume settings and keeps the taper of the volume control much better than leaving one or the other resistors out. It’s the best of two versions rolled into one.

Thanks! Any decent values to start with for alround-ish noiseless pseudo-singlecoils and medium output humbuckers when using a 500k pot?

 

[HomespunEffects]

I always start with the original version and only change something if I don’t like it.

Dang, i really do have to build my decade boxes for this purpose. I’d have a definitive answer already.

I have an idea for this. Let me work on a few things.

 

[EOengineer]

I assume you mean “leftmost” as if looking into the cavity. Just going by that assumption, it should be right most lug on tone pot. Then the middle gets grounded.

Seymour Duncan has the best diagrams imo:

View attachment 47813

View attachment 47814

Might have just been the way I explained it, but the 50s wiring shown here is consistent with where I moved the cap.

The mistake is you still had the other rout live on the pcb.

This was my suspicion but I couldn't seem to chase what I had missed. The middle lug on the tone pot was showing continuity to the pot casing when the pot was fully off, IIRC. I may pop it back out and take another pass, but I'm leaning towards just pulling out the PCB and wiring in a more traditional setup.

I always start with the original version and only change something if I don’t like it.
View attachment 47826
Dang, i really do have to build my decade boxes for this purpose. I’d have a definitive answer already.

I have an idea for this. Let me work on a few things.

Interesting so this is like a combination of the standard treble bleed (cap & resistor in parallel) and the kinman treble bleed (cap & resistor in series).

I'm still on the fence about the treble bleed I installed in this SG. It does do a better job of keeping the highs from getting eaten when rolling down volume but I feel like 50s wiring does something that makes the pickups seem more lively/brighter like they are loaded differently even with the guitar volume all the way up, and I think I'm missing that. I need to spend more time with it and put it through my 2204 to make objective calls.

 

[TubeStack]

Ok so the next project will be adding some high density foam wedges to flush the pickups to the strings and not the body.

I did this on a 2009 SG I had and it made a big difference. Also put in Lollar high winds, fantastic in an SG.