Grounding cable gauge size

I have my speaker's negative terminal grounded into one of my DIY grounding boxes. If anyone is interested, I can share the ingredients. And perhaps some pictures on my systems page. 

Others with more experience in this type of grounding can answer.

ozzy

I would not connect your negative terminal to anything electrical ground (which would include a copper pipe in many homes). You will have a ground loop and it will be unpleasant for your gear. 

Proceed with caution.

Ozzy, is anything else connected to the box, or just the one speaker negative to one box that is its own terminus?

bugredmachine,

Well, I have each speaker negative terminal connected via a silver wire to (2) small separate different DIY boxes. The amps and subs are also connected via a silver solid wire to one large DIY box with a separate terminal on each end. The Dac, etc. are connected to the Entreq Silver Tellus via a couple of their Atlantis grounding cables.

These are all signal ground connections. I used to be able to hear a faint low-level sound through the speakers from the tube amps at about 4’ away. Today, I have to practically put my ear inside the speaker to even hear try to hear anything.

Of course, that is without music playing. LOL!

And the sound quality is amazing these days very deep sound stage. I am impressed.

ozzy

Here is what is inside my DIY boxes.

DIY Grounding Box Ingredients.

Magnetic mat placed at the bottom of box.

Crystals- Various types of Tourmalines, Quartz, Topaz

Minerals- Graphite, Graphene, Manganese Dioxide, Iron oxide, Zinc Sulphate, Carbon.

Wire- 10-gauge 9999 silver wire, chopped up 9999 silver ribbon pieces, 10-gauge 999 copper. Aluminum pieces.

Copper 101 sheets, copper chop, silver pieces.

Graphene Oxide.

Shungite 200 grams total. 100 main box 50 each speaker boxes. Plus, I added another pound of raw Shungite. ½lb to main box ¼lb to each speaker box.

Rochelle salt 2 pounds. 1 pound main, ½ pound speaker boxes.

Oil Dry compound placed outside of copper sheets for “earth”.

And of course, a few large wooden cigar boxes.

Note: I just added pictures of these DIY boxes at the end of my systems page,

ozzy

Very impressive box ingredient list and system Wow!  I took a much simpler tact (on my modest system) after doing limited research with positive results as well. I made 2- 6x6 boxes from scrape melamine wood. Lined inside with copper plates and conductive copper tape. Filled with 45% rock salt, 45% horticulture charcoal, 10% fines and 1” pieces of tourmaline.  Used basic OFC copper 16 ga speaker wire +/- twisted together with spades and banana plugs. One box has both speaker - connected.  Second box is plugged into wall outlet ground only and connected to the chassis grounds on my power conditioner and TT preamp.  Substantial SQ improvement. I have pics on my system list.