I am just learning about hooking up car amps and subs and my amps LED indicator isnt lighting up nor my subs are working. I am sure i have 12 volts at the amp bout no LED. they were working fine for about 5 minutes and now I have no clue whats wrong. I have the remote wire hooked up right as well ... to the blue with white stripe. Any ideas whats wrong ? thanks
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Re: LED power protection light not turning on
Check the fuse on the amplifier; if it's good, then you need a multimeter or voltmeter for further testing. With the meter's black probe on your amp's ground terminal and the radio turned on, both the power and the remote terminals should test at about 12 volts. If neither terminal shows voltage, you may have a problem with your ground connection; if both do, there's a problem with the amp.
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on most amp red isnt good that means it in protection mode try turning your setting on the amp down all the way and turn the volume down tell you can get sound out of them then turn up the volume to were you would to them most and set the to what sounds the best but make sure the light doesnt dim down when the base hits
if you have a protection light that is on it means the amp is in protection mode and wont allow any power to the sub this usually happens when the sub or wiring shorts out or if there is an internal failure in the amp or if its overheating. check the wires and connections and test your sub on another amp.
Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.
if u have the amp bridged un bridge it. chack an see wat the ohms are on the subs an make sure the amp is stable to carry the ohm load..if u have 4ohm subs one sub per channel then u shud be fine that wud make the amp see 4ohms but if u have dual voice coil subs it cud be the configuration of the subs..here's a link on how to wire subs hope this help..http://mobile.jlaudio.com/support_pages.php?page_id=145
If it is not turning on your problem is it is not getting power. Check your fuses. The reason an amp goes into protect mode is usually because the subs are not wired up right. Make sure your fuses are good, you have a good ground, and make sure your amp turn on wire didn't come loose when you were putting the deck back in. As for the amp going into protect you probably wired the subs down to too few ohms and the amp you have can't handle it. Try hooking the subs up straight w/o bridgeing them and turn it up to see if it works. If you don't have problems with it then you wired your subs wrong.
You cannot parallel two subs AND run them on the Bridge. You must have at LEAST a 4 ohm load on the bridge, and 2 4 ohm subs in parallel equals TWO OHMS. BAD!!! Move each sub to it's own channel or your amp will soon fry.
The red light means the amp is in protection mode. A few things can cause protection mode.....
First disconnect the subs completely from the amp, and turn it on, if it powers up you have blown subs.
Also try checking the main power wire at the battery...sometimes the current your meter is seeing is backfeeding from the remote wire, so your main power line could be blown at the fuse under the hood.
hope this helps
1. Did you witness this amp ever working if not then you may have a blown amp. Hook up the speakers, get a portable player with a head phone jack get one of those cables with a headphone plug on one end and RCA's on the other plug the portable player into the amp and hit play. If sound comes out then your problems are elsewhere. If not I'm afraid your amp is probably toast. If the OHM rating of the speakers are too low for the amp then the amp will go into protect. This will be indicated by the protect LED lighting up or the power led changing color from say green to red.