so a friend and i put a new sound system in my '94 U13 bluey sss. BOSS amp, 4 xplod speakers and a panasonic head unit.
rear speakers came out fine. the amp is in the boot so we just directly hooked in some new speaker wires from rear speakers -> amp. there was an issue with alternator noise, but i later seperated the RCAs to go along the drivers side, with the remote and power wire going along the passenger side, which fixed the problem. we only did the rears because the front doors are a bitch to get off. i later got the front doors off on my own and put in the new xplods. i just connected in the existing front speaker wires (bluewhite,blueyellow;brown,brownwhite) and rendez-voused them at the boot and into the amp.
that's where the shit hit the fan and i'm currently at a loss. i'm getting alternator noise again (only in the fronts though) wtf! AND there's an on-off pop/thump. the on-off thump and the alternator noise ONLY come from the front speakers. go figure. i've had a look around the web and the consensus on alternator noise is either rcas being too close to the power wire, or shitty grounding. as i said, i already seperated the RCAs from the power, and if it was due to shitty grounding, wouldn't the rears also experience the alternator noise? i even switched the RCAs around on the amp to see if one of them was picking up the alternator noise somehow and not the other. no difference.. alternator noise only in the fronts. as for the thump, if i remove the speaker cables for the fronts, thats that only cure i've found so far
the rears have an off thump sometimes, which is so mild it's negligible. does anyone have any idea what's going on? maybe something to do with the stock front speaker wiring? or maybe running the remote+power together is bad?