Need help with a rear speaker and amplifier (all Pioneer)

[vacuumboss]

Hello guys I need some help bad.

I bought two front component speakers, two rear 4 way speakers, and a Pioneer GM A6604 amp to compliment my Pioneer deck. Went through and installed everything correctly with brand new speaker wire that took me 7 hours to discretely run through my cab. Hooked up everything. Started the radio, amp kicks on, and delivers sweet clarity to all speakers except for one (just one of two rear speakers). I am kinda bummed now. Anyone know why the amp refuses to power it? It's not like there is even any static either. No noise or sound whatsoever.

Thanks in advance guys. I tried Google but it was super unhelpful and I just kept finding links to iPhone stuff. Wtf. Maybe I'm just not searching the right phrases.

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[LosIsATool 5,000+ posts]

Wiring

 

[vacuumboss]

Went through ALL wires with a multimeter and each shows normal resistance. Inverted the rca cables (left to other left, right to other right) and the "dead speaker" comes to life but the front speaker on the same side inherits the problem. If I parallel reverse them the problem goes to the other side of the vehicle. Unfortunately it's not wiring. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[keep_hope_alive Premium Member]

Went through ALL wires with a multimeter and each shows normal resistance. Inverted the rca cables (left to other left, right to other right) and the "dead speaker" comes to life but the front speaker on the same side inherits the problem. If I parallel reverse them the problem goes to the other side of the vehicle. Unfortunately it's not wiring. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

your test proves that the speaker wiring and the speakers are functional. your test also proves that one of the RCA cables is faulty. assuming it didn't get pinched or come loose at the back of the HU, you may be able to run the amp in 2 channel mode so all 4 speakers will work (using two good RCA cables).

you will lose fader with this method.