*Help* Amp trouble

Help Amp trouble

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Youtrippin - 18 Dec 2004 11:35 GMT

My amp has been having some serious issues lately. The sub woul
suddenly cut out and the light on my amp would start flashing purpl
which means when the unit has failed and direct current voltage i
generated to the speakers output. If I shut the amp off and back on i
would work again. After a couple weeks of this game the sub qui
working altogether. It's a 5 channel Kenwood Excelon, the 4 speaker
still work fine running off the amp but no sound comes out of the su
anymore. If anyone had any idea how to fix this problem please let m
know. I have tried to contact Kenwood on many occassions but they onl
go through email and I never get a human respons

--
Youtrippi
CarAudioForum.com - Usenet Gateway w/over one million posts online

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Dark1 - 19 Dec 2004 09:09 GMT

> My amp has been having some serious issues lately. The sub would
> suddenly cut out and the light on my amp would start flashing purple
[quoted text clipped - 6 lines]
> know. I have tried to contact Kenwood on many occassions but they only
> go through email and I never get a human response

First thing,disconnect the sub wires and use a DMM to measure the resistance
across the wires going to your sub.. it won't match the rated impedance
exactly, but it should be close (within 1 ohm or so).. if it isn't a 0.x ohm
short, move on to measuring between each sub wire and ground, obviously the
resistance should be infinite here, any reading means wiring is touching the
body..
It really doesn't sound like a "fried amp"in the traditional meaning,
because usually shorted output transistors will destroy the power supply and
blow the fuses.. your amp wouldn't work at all.. if the problem truly is in
the amp I doubt it's major..

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