Real Time Help Needed!

[Cruisin]

Just installed an Alpine head unit.....9825

Have four door speakers (Eclipse)

Bought an Alpine MRP-350 sub-amp, using RCAs hooked up to head unit.

Have a dual-voice coil Alpine 12" Sub 1242D....

Head unit works fine......so did amp/sub for about 5 minutes....then no sound from sub. Still have power light on. Wired the sub according to diagram....

Took it to Best Buy guy, only thing he could figure was my amp is already bridged, so he reconfigured the wires, worked....for about 30 minutes after I left....

Figured the amp could be bad, traded for another today, same thing. Bypassed that sub and tried another, no juice either....Still have light....

GRRRR help!!! //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

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[XtrmAudioCncpts 10+ year member]

make sure everything is grounded right. and multimeter everything that you can to try to figure out where you are losing power

 

[pw91686 10+ year member]

make sure you didnt blow a fuse.....

 

[Cruisin]

make sure you didnt blow a fuse.....

I have power, just no sound.

 

[SPL140.2 5,000+ posts]

Your head unit may be defective! Test your rca outputs on your deck.

 

[Cruisin]

Instead of pulling the dash, I should be able to test the RCA cables at the connection to the amp, right?

 

[ericnord 10+ year member]

You can test it at the amp, but if it is faulty there you cannot say if it is the patch cable of the head-unit until you test it at the head-unit, but test it at the amp first.

 

[Chevyaudio 5,000+ posts]

check all of your connections, fuses and make sure that your not grounding out the power wire any where, use a multimeter to check for power at your amps