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Amp keeps cutting out

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Old Feb 28, 2016 | 04:28 PM
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Default Amp keeps cutting out

My amp randomly started cutting in & out. It seems to only happen at higher volumes & at random times. It's not wiring related. My guess is the amp is taking a crap which would really suck since everything is new. It's an Arc Audio XDi805.

Any ideas or suggestions?
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Old Feb 28, 2016 | 04:53 PM
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What makes you so sure it's not wiring related. High resistance connection causing voltage drop and high volume and heat spikes till amp goes into thermal
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Old Feb 28, 2016 | 05:36 PM
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Originally Posted by pentavolvo
What makes you so sure it's not wiring related. High resistance connection causing voltage drop and high volume and heat spikes till amp goes into thermal
Wiring has been checked. Are you saying the amp is overheating? If that's it, then why would it do it for a few seconds then work normally for an hour immediately?
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Old Feb 28, 2016 | 10:31 PM
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Look at the amp when it's cut out. If it's completely dead you're prob losing trigger voltage (common issue with some interface adapters).

If it's in some sort of protection mode this chart will tell you the issue.


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Old Feb 29, 2016 | 07:40 AM
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the xdi805 was a horrible ARC amp. I had nothing but issues with them.
They stopped making them a couple years ago. I would have never recommended this amp due to this issue and loss of channels plus could nto get one for you even if you wanted it..

This sounds like one of the first runs they had and then tried to correct the problem. Whoever you got it from prob had very old inventory he just wanted to get rig of it with the newer XDI V2 stuff available.

The 1100.5 or 850.5 is a much better option and is what I sell for ARC 5 channels now for those who want ARC

Last edited by Double D Mods; Feb 29, 2016 at 07:45 AM.
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Old Feb 29, 2016 | 07:47 AM
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Originally Posted by markcz
Look at the amp when it's cut out. If it's completely dead you're prob losing trigger voltage (common issue with some interface adapters).

If it's in some sort of protection mode this chart will tell you the issue.


When it cuts out, the power LED goes out.
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Old Feb 29, 2016 | 07:49 AM
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what size power wire to amp did you use and did you use a quality amp kit
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Old Feb 29, 2016 | 09:26 AM
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Originally Posted by Double D Mods
what size power wire to amp did you use and did you use a quality amp kit
4 gauge power wire.
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