Question about Infinity Reference 5350a Car Audio Amplifier

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Losing power in have a 5350a amp, when you first turn the stereo on everything plays about one minute into it i lose power to the amp.

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  • alanlnichols Sep 06, 2008

    i was running 4x 4 ohm and 2ohm sub. this unit ran fine for 4 months before the problem started. the amp was mounted under the back seat of a avalanche i'm running the correct wiring for this use.

  • alanlnichols Sep 06, 2008

    and no i'm not playing loud, i have removed it from the truck and let it set for a month now, i have with nothing hooked to reconnect it to a battery with proper wiring and after a minute i lose the power light.

  • Anonymous Sep 28, 2008

    I also have experienced the same problem with this model. It has worked fine for about a year now, but now it is doing the exact same thing. It will power up and go off, power up again and go off. The protect light never comes on. I have checked all the power, ground, turn-on lead, etc. I can only assume that it is a faulty amp. Of course the warranty just ended last month too. Oh well.

  • Kevin Murray May 11, 2010

    Have you confirmed that the amp has no power or is it just not playing music? Could you provide more info about your setup? What load is the amp connected to ( 4x 4ohm speakers + 2 ohm subwoofer etc...) Where is the amp mounted? Did you use an amp install kit with proper wire size and fusing? When it stops working are you playing it loud?


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After reviewing the owners manual I can only guess that your amp is faulty and will need service. There is no reason for the power and protect lights to both be off while the power and remote wires are active. I'm assuming of course that power is still applied and remote is activated. It's difficult to diagnose problems online without voltmeter readings but my bet is on a faulty amp. In this case it will need to be professionally serviced. Before paying for service you could check the voltage at the 12V and Remote terminals, both should be 12volts. A solid ground is obviously required but it sounds like you have wiring covered. Feel free to post any updates and I'll continue to provide options if I can.

Posted on Sep 06, 2008

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