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 Post subject: power loss to back speakers
PostPosted: Sat Dec 14, 2013 8:52 pm 
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Location: Adelaide
Hi, would anyone know why my back 6x9 speakers cut out when the volume is turned up high?? But come back on once the ignition is off and turned back on? I have 2 4 inch speakers in the front 2 6x9s on the parcel shelf and a fusion subwoofer.
any input would be helpfull, thanks :)


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 Post subject: Re: power loss to back speakers
PostPosted: Sat Dec 14, 2013 8:55 pm 
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Having positive negative back to front can cause this.

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 Post subject: Re: power loss to back speakers
PostPosted: Sat Dec 14, 2013 9:00 pm 
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If positive and negative were back to front wouldn't the speakers just not work at all??


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 Post subject: Re: power loss to back speakers
PostPosted: Sat Dec 14, 2013 9:07 pm 
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No they will still work.
But when turned up high they cut out.

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 Post subject: Re: power loss to back speakers
PostPosted: Sat Dec 14, 2013 9:17 pm 
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Oh okay ahah I didn't know that, I will have a look tomorrow


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 Post subject: Re: power loss to back speakers
PostPosted: Sat Dec 14, 2013 11:29 pm 
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Sounds like the amp (or head unit) is going into 'protect mode' due to dodgy wiring or the amp/head unit lacks the power to drive the speakers at high volume. Knowing a bit more about your system would help.

Reversing the speaker polarity affects phasing, but shouldn't cause them to cut out.

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 Post subject: Re: power loss to back speakers
PostPosted: Sun Dec 15, 2013 7:37 am 
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It doesn't do it when the car is turned on and the motor is actually running its just when the car is off, if that helps at all?? :)


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 Post subject: Re: power loss to back speakers
PostPosted: Sun Dec 15, 2013 8:53 am 
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That suggests that the power/earth to the amp/head unit aren't adequate. Again, not knowing the specs of your system makes it difficult to diagnose.

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 Post subject: Re: power loss to back speakers
PostPosted: Sun Dec 15, 2013 9:27 am 
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Ive got 2 4 inch soundstream speakers in the front
2 6x9 kenwoods on the parcel shelf and a fusion subwoofer


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 Post subject: Re: power loss to back speakers
PostPosted: Sun Dec 15, 2013 11:40 am 
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Yeah it means not getting enough power turn down the gain to see if that helps if it does it means your running much power to the speakers and sub and your amp can't handle it


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 Post subject: Re: power loss to back speakers
PostPosted: Sun Dec 15, 2013 11:50 am 
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Ok thanks for the help mate


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 Post subject: Re: power loss to back speakers
PostPosted: Fri Dec 20, 2013 7:56 pm 
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You haven't specified what amp your running ...?

Like yldboy said the polarity won't effect the cut out it will just make them sound s**t because their sucking in instead of pushing out

If your running a poor quality amp/head unit then that probably won't help ...


I'm leaning towards bad earths on either the head unit or the amp

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 Post subject: Re: power loss to back speakers
PostPosted: Fri Dec 20, 2013 8:09 pm 
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Its because the bass and treble were up to high and I don't have an amp except the one that's built into my sub which is only for the sub.


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