Plug your rca's from your 4 channel into your bass amp with your subs hooked up to the big amp. That will tell you if you have a set of bad rca's on the deck itself..
a good tip, but we've already eliminated the signal cables....
he's completely disconnected the rca signal lines from the amp
and still gets the "short" (subwoofer sucking in).
so your FRIENDS AMP is bad TOO !?!
i bet hes gonna hate hearing that news !
hey those TWO JL 10w3's you got would easily handle
the JL 500/1 and im sure it would be PLENTY of thump then.
JL Audio: Products
im running a single solobaric S10L5 w/ the 500/1 amp
and im VERY pleased !
you can see photos of my install @ the JL Audio (part1 & part2) &
Crutchfield web sites....or in the links below.