here's the rundown: panasonic CQ-VD7005U indash, sony 2 channel amp, 2 10inch subs. i just bought the indash and on it, there is RCA outputs for each of the 4 interior speakers, however for the sub output there is only 1 RCA output. aparantly i need a mono amp. the settings on the deck have the sub output turned on. i thought i can run a Y splitter off of the one rca sub output to my RCA's running to the back and plug that into the amp, but that doesn't work, amp is turned on by the remote but no sound thru the subs. now if i plug in the amp RCA's into a pair of the RCA's ment for the front speakers, i get bass thru the subs, however it has highs coming thru them too which is no good. aparantly i need a mono amp, however my brother had it working thru the sub output when he had everything installed on his car. do i need to bridge the amp to get this to work? (i have no idea how to do that) and if so, then do i just run 1 rca from the sub output into perhaps the R input on the amp? i'm lost.