DC Voltage on amplifier output?? JBL GTO..WTF?

[5.0coug 10+ year member]

I have a 75.4 and was cruising tonight with the volume cranked for a while and all a sudden i got the speaker volume cutout so i pulled over and saw that the protect light flashed every 4 seconds and the owners manual says that means "DC Voltage on amplifier output". What exactly does this mean? I was only running one channel because im waiting for my rsds to come in (hopped on the bandwagon for the price, not so much the hype) and when i last set the gains i had no distortion so im kind of lost. Any ideas?

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[JimJ 5,000+ posts]

Using one channel? What do you mean?

When amps go DC, things don't look good for it...

 

[cx-7heaven 10+ year member]

Amps are supposed to output ac voltage, when it did that and your protect light came on, you blew your amp. Thats what happens when you run a stereo, or 4 channel amp on one channel. Lesson learned.

 

[dB-r 10+ year member]

Bad driver transistor or output device. Device shorted, sending DC rail voltage to the speaker terminal leads. We can fix it. PM me or go to my website for more info on repair: http://www.db-r.com