one speakers stops them all from working.

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113713
Printed Date: May 05, 2024 at 8:15 PM

Topic: one speakers stops them all from working.

Posted By: bemendozer
Subject: one speakers stops them all from working.
Date Posted: May 09, 2009 at 4:05 PM

For some reason one of my speakers has stopped working, I'll find why later. Heres my question if I disconnect the speak from the radio the other three will work but as soon as I connect even one wire of the faulty speaker they all go off. Why is this? I have had my meter on wires from the back of the radio and they are measure 4 ohms accross the speaker.

Has anybody come across this before??

Replies:

Posted By: i am an idiot
Date Posted: May 09, 2009 at 4:29 PM

The new generation of Output chips have a protection curcuit built into them. It sees a shorted speaker or a grounded speaker wire, and it turns itself off to avoid damage.

Posted By: ken_woofers.
Date Posted: May 10, 2009 at 12:02 AM

Yeah, Hes right. Its pretty much a protection feature to keep from damaging your headmount. Most amps have them, and a couple newer recievers do as well. Alls you gotta do is replace that one speaker and you'll be golden.

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Serielle Verkabelung

Posted By: bemendozer
Date Posted: May 10, 2009 at 3:21 AM

Cool thanks. Its a new one on me?? I could understand if was off an amp for the protect reason but this is off the actual head unit and I have never seen that before. The speakers are going anyway and new ones all through the car.

Thanks for the help.

Posted By: i am an idiot
Date Posted: May 10, 2009 at 6:32 AM

Some of the newer radios will also display fault or short on the display to let you know that there is a problem. And if you do happen to take out a channel of the output chip (by touching 12 volts to one of the speaker wires) the radio displays "Failure" in the startup sequence. But the other 3 channels will still work. cough cough Sony

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