The added copper for the - terminals..
I'm lazy did not completely take apart 1/8 connector so i just slid the copper wire under the sleave of the 1/8 connect.. Now my shrink tubing will not fit over the 1/8 connector.
I will need to take the entire connector apart to add the shrink back. I'm on the fence either to recover the entire cable with a thicker cloth cover or leave the way it looks with the cooper interwoven between the left n right terminals..
I'll be dam if take the woven silver out of the black cloth covers lol too much work..
Oh well it now has a tad more meat in the lower sub bass region.