Copper foil

Mrtennis, I use silver rhodium spades sourced from Home Grown. To start the narrowing of the ends, I gently curve the edges into a U. I snip the last three centimeters into strips for intertwining. The spades have two allen bolts that secure the intwined copper.

My amps have to be carefully guarded against shorts. That is why I use clean spades. Bare ending the copper to the speaker terminals may be advantageous.

"I just added a single tail copper foil to the negative side of my speakers...".

Forgive my ignorance but what is this DIY about? Thanks in advance.

Ghosthouse does 2130 H mean anything to you?

This is the easiest DIY in audio. The returns are way and above any justifiable
expectation.

Hey guys, for kicks, try your kitchen drawer aluminum foil for the return leg. Just cut it into wide ribbons. See if you hear a difference. I bet you won't.

Muralman1 - sorry, no...2130H doesn't mean a thing to me. But I guess I'll be searching on that! My curiosity is certainly up. Would appreciate learning more about this DIY. I take it is a kind of "tweak"?