semcoinc,

Let me know if you notice any difference in the quality of the bass by going to the RCA connectors. My Rockford amp has RCA inputs as well and if there is a significant difference I may pull up the interior and do the same.

Separate question, how did you wire your 8 ohm subwoofers to have them come out to one terminal block? I actually made two terminal blocks going into the amp. Thx!