Grounding my guitar..

tdgamblin

Member
Any advantages or disadvantages to this so called "star grounding" vs traditional grounding to the back of a pot? Im about to rewire my carvin and was just curious as this seems much easier and cleaner than grounding on the back of the pots and running 123413 jumper wires. Also, since my whole cavity is shielded i could technically solder the wires ANYWHERE in the cavity and that would bassically be the same thing as star grounding correct? This is how i intend to do it but without the Tone/filter thing the person drew in the circuit.
 
Re: Grounding my guitar..

what's stopping you from grounding from the back of the pot? I've done what you're suggesting, with mixed results. What's been more consistent IME is the back of a pot.
 
Re: Grounding my guitar..

what's stopping you from grounding from the back of the pot? I've done what you're suggesting, with mixed results. What's been more consistent IME is the back of a pot.
Mainly just the fact that the star grounding seems like it just make everything cleaner altogether and i wont run the risk of burning up my new pots by soldering straight to the back..
 
Re: Grounding my guitar..

The point of star grounding is simply to have all points lead to ONE ground.

Wiring all ground connections to the back of a pot, which itself is grounded will work.

Grounding all connections to one point connecting to the shield, which is grounded, will work just as well.

Realistically, just ground where it is most convenient for any lead that needs a ground connection. Just make sure you use a multimeter to test that all ground points have continuity to ground. If all grounding points lead to one common ground and have continuity, your guitar should not have any ground hum.
 
Re: Grounding my guitar..

Star grounding is useless. Where's your ground? It all goes to one point eventually on your output jack. The ground comes to one point before it goes off into your amp so star grounding earlier in the electronics doesn't have any impact (provided everything that should be grounded is grounded... everything is already a "star ground"). With that said, I've never seen anything wrong with just keeping it all attached to the back of the volume pot. If you're shielding your guitar, sometimes it pays to run the ground from your output jack to the shielding and the rest of the components to the shielding so that it forces everything to the same spot. I remember reading somewhere that you can eliminate a few db of noise from a single coil guitar from forcing the main signal through the shielding directly, but I can't see where it would make too much of a difference, honestly. FWIW, when I re-did the electronics in my '63 Tele that's what I did, but I can't say it's significantly more quiet than before.
 
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Re: Grounding my guitar..

Well my carvin is already shielded with copper tape (all carvins come that way stock i believe) so it just seems like its more convenient to solder to the shielding itself because i wouldnt have to put the pot through all of the stress of the excess heat. i may just ground things randomly all over the cavity.. all though someone will think im crazy if i ever go to resale it.. lol xD
 
Re: Grounding my guitar..

It's no better or worse than other methods, except that you have to be extra careful not to short out anything.
 
Re: Grounding my guitar..

Im starting to think it will just be simpler to solder to the back of the pots... at least i wouldnt have to run grounds to connect the back of the pots since the pots will ground to the shield when i install them.. any advice to soldering on the back of pots?
 
Re: Grounding my guitar..

A decent soldering station of 40-50W at high temperature. On, solder, off in about 6 seconds.
 
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