Report "I have an HGS-10, and the unit has current, fuse is good. Issue is that I have no responsiveness using the single sub out on the back of my amp, have configured amp to power up the sub out, also, have followed advice to use a "Y" adapter to make both "in" ports in use. I have absolutely no responsiveness out of the speaker, but amp does have power. Any ideas? Could it be a capacitor issue, and if so, how would i tell?"