Grounding cable gauge size

Are you connecting to the negative terminal of the speakers only with a standalone box for "passive' absorption? If powered speakers, I would guess you cannot connect the neg terminal to a ground of a duplex?

I connected basic 16ga copper strand wire to the neg terminal on each speaker only to the standalone box. Speakers have class D sub amps built in not fully powered speakers. Plan to try NPS1260, wire and connector upgrades to see if it improves.

I also have made some DIY speaker ground boxes and was also amazed at how well they work. 

Be curious to hear how the NPS 1260 works, I have some but have not tried it on those connectors.

ozzy

I cannot anticipate any auditory benefit on a ground wire.😏

Ozzy, have you tried your grounding direct ot the duplex ground and w/o the Entreq?