ground loop isolator got rid of both.
what does that mean? need shielded rca cables? (i know, i know... i should have had those from the start)
new oddity showed up. I tested like ryan suggested, and connected one amp in place of the other. The noise was still there, but the 1400W 4 channel (was using for my subs) is ALOT quieter on the 4 channels, then the 400W 4 channel. what?? how is that possible? i know it doesn't quite put out the 1400 (its way overrated) but it shouldn't be that quiet (had to have my h.u up to about half to be able to hear it)
so i guess my shopping list, so far, is a new 4 channel amp (for subs) and 3x20ft shielded rca cable and 2 more ground loop isolators
http://cgi.ebay.com/Triple-Shielded-...QQcmdZViewItem
These good enough quality?
and if this is the subs i have...
http://www.sonicelectronix.com/item_...s+FFS1024.html
they can handle 400W per channel? they ARE dvc (just so i'm reading that right) so the amp i'm looking for can do up to 400W per single channel?
lastly... to make sure i have these settings correct. on my headunit, i have preout:S/W (subwoofer) and rear sp: FULL ? from what i understand on pg 43.
http://akamaipix.crutchfield.com/Man...130DEHP760.PDF