Question about Pyle PLA2180 Car Audio Amplifier

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Protect mode I had just installed the amp and it was doing well for two days, but after that the amp's power indicator will just light for a second but it will switch to protect mode after that. I followed all installation specs.

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The only thing to try would be to remove the sub wires form the amp and see if it still goes into protect. If it still goes into protect with the subs unhooked then the amp will require repair.. If it doesent go into protect then check to see if you have a shorted subwoofer. also make very sure that you have a good clean bare metal tight ground connection to the body of your car. People forget that step all the time.. Did you do your setup with the correct ohm load? Most of these amps will fail if the subs are hooked up incorrectly(too low of a ohm load). If the amp has a lowest possible ohm load rating of 4 ohms... but you have a pair of 4 ohm subs.. you hook them up togther at the amp.. both positives togther- two negatives togther.. because it "bumps harder" that way.. Then you now have a 2 ohm load on the amp... The lower the ohm load you put on a amplifier the more it will output. The problem when people do this is that the amp outputs more current then its internal parts are rated for and the output transistors (usually) fail.. most amps will not fail if installed correctly.

Posted on Aug 21, 2007


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The red light indicates that your amplifier is in protect mode. Amps go into this mode if there is something wrong with the setup of the system to prevent fatal damage to the amplifier circuitry. This is bad thing since the amplifier will not function until the problem is solve and it can remove itself from protection mode.

Amplifiers can go into protect mode for many reasons but one of the most common is incorrect mounting. Is your amp sitting on the metal of your vehicle? Is it bolted down and screwed into the metal of the vehicle or your seat? The amp should never be touching any sort of metal. Only the ground should touching the metal of your vehicle.

Speaking of grounds, many people often neglect proper grounding which can cause an amp to go into protect mode. Do you have a solid ground? Is the wire less than 3 feet long and directly connected to a non-painted metal part of your vehicle? Is the ground wire the same gauge as your power wire?

These are just a few reasons why an amp can go into protect mode. You can find more information here. Or simply google for why your amp is in protect mode.

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This could cause from different issues.

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If the fuse ok you might have other problem in the Audio Output stage.

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Is it doing this while you have it turned right up? Most systems have protect mode because you are trying to draw to much power or amps through them. Are you trying to run to many or to large of a speaker through them all systems have rate output if you try to exceed this they go into protect mode so you don't blow the amp.

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