Question about Legacy LA2098 Car Audio Amplifier

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Amp not working correctly goes into protection

Ok, I have switched from a 1000 watt amp to a 2400 watt amp. I am using the same wires that first started with. The 12v cable is an 8 guage. The first 2 months I had the new amp it worked perfectly fine, but suddenly it stopped. The fuses blew so i replaced them. I restarted my car and the subs made a quick thud and stopped. The green light came on for a sec then went straight into protection red led. I also replaced the 100 watt fuse near the battery. I cant really figure out why but help would be appreciated.

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Re: amp not working correctly goes into protection

Disconnect the speaker wires from the amplifier and see if it still goes into protection mode. If it still goes into protect with the speakers disconnected, there's a problem with the amp; if not, you may have a blown speaker or a shorted speaker wire.

Posted on Mar 07, 2007

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Sounds to me like the amp is going into protection mode. Try placing one sub on the amp with very little gain. One of the biggest reason why this happens is because the subwoofers are wired wrong. What is the brand and model number for your amp?

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Hello rivertoyz,

If your F250 has the stock radio, there are no preamp outputs, so you will need to use the speaker outputs. The best solution would be to wire a LOC (line output converter) to the rear channels and run RCA cables to the amp.

Speaker wire color code:

Left rear positive - Gray/Light Blue
Left rear negative - Tan/Yellow
Right rear positive - Orange/Red
Right rear negative - Brown/Pink

You'll need an amp wiring kit with 4gauge power and ground. Both the LOC and wiring kits are available at numerous online stores. The best service is from Another reputable online seller is

You did not say what subwoofer(s) you intend to use with the amp. If you want to stick with the Maxxsonics product, a pair of 10" Orion HP10D2's would be an excellent match. Wire each of the subs dual voice coils in series for 4ohms, then parallel them to the amp for a final load of 2ohms. Both of the linked retailers above sell the Orion's and many other brands as well. Just make sure that your sub selection has adequate power handling capability. At least 1000 watts RMS if you use a single sub and 500 watts RMS if you go with 2.

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Best thing to do is disconnect all the speakers with no input on the amp turn it on and if its still in protection seek help in the repair of said amp at If the protection light goes out then start to put back on each speaker with no volume and the unit off. if you get to a speaker that makes the unit go into protect then leave on that speaker and disconnect all the rest .. If the protect remains then something with that speaker or wiring is bad BUT if after disconnecting the rest of the speakers that you hooked up then theres is still a power issue with your amp

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