Question about Sony Xplod XM-554ZR Car Audio Amplifier
I changed speaker wirers no diffrence, so no pinches in that area..... but it seems now i actually replaced my rca cords(new ones) and when i place them into the rear input slots of the amp, the protector turns red (with or without speakers on the amp).. also, since the spekers work on the front channel(but not alot bass, im guessing due to the high pass filter that i would mean somethings up with the amp... however, thats the way it should be right? if rca output from stereo goes to front input of an amp, and then sub hooked up to front amp output right? it shouldnt have alot of bass thru that? if the output on that channel is fried......would it be noticable if i popped it open? thank you for yur help.
Probably not, as i said there are no user serviceable parts inside this unit. If the units worth it to ya take it in to be estimated. Good Luck
Posted on Jun 14, 2006
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Defeat any bass enhancement in the source until you figure out the level issue.
Should the amplifier go into protect mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected.
1. Now turn the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.
2. If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.
3. If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic
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