That's interesting, I have never needed to use one. Must be a mustang thing. Ya, I don't think I will ever have it in me to install a sub, haha. I think 4 component speakers with a little thump will have my very content.The cap provides extra on tap power when the system is really cranking. I noticed before it was installed, that the sound would fall off after a couple minutes of high volume thrashing. In went the cap, and no more power loss.
Well guys, thanks, reps to the both of you.