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Re: protect on car amp
If the amp is in protect mode, it probably has shorted output transistors. To eliminate other possible problems, do the following. I'll assume that you've checked the amplifier's on-board fuses.
With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.
If the voltage remains near or above 12v, disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp almost certainly has shorted output transistors and will need to be repaired.
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that would be the amp. sorry to say. when a wire crosses over, it sends a shock through the amp, there are a few things to try just to see if you fried the amp. the first thing to try is to move your ground to a different location. second thing to look at would be the fuses. alot of times the fuses will blow at the slightest shock. the amp will still turn on if you have an amp with 2 fuses, it just wont be getting all the power it needs, which could be causing your problem. also, it is worth the hour and a half to mount everything down in your vehicle. you might check the kicker website, because i have herd rumors that kicker offers a lifetime warranty on almost all of their products. best of luck, and i hope you didnt fry your amp.
Hello, First of all with these new Alpine amps everithing adjustable just about is digital, as well as the internal workings of the amp to a point. If you bought this amp new then check your warranty or take it back where you purchased it if you can. Check that your amp is getting an input signal from your head unit. Check your head unit sub output settings, something could have gotten turned off or down. On this paticular amp if there is a problem internaly it would let you know or go into protection mode. You say your sub has ben tested and is good, check again. Hook another speaker up to the amp. Unhook that speaker and try, you never know. Like I said, if the amp is'nt going into protect mode and the digital display is'nt telling you any types of faults then it has to be the input signal. Make sure you are getting a signal. That has to be your problem otherwise amp would be in protect mode. Let me know what you find.
In virtually all instances where the protection light is illuminated, the amplifier has gone into protection because the output transistors are shorted. To eliminate external wiring problems do the following.
Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still goes into protect, the amp likely has blown output transistors.
If it does have blown outputs, it's is likely due to the speaker wires shorting together when the woofer was out of the vehicle.
If you know how to use a multimeter, you can test the amp this way:
-unhook the subs -hook up a cheapie speaker you know for sure works to one of the channels -unhook the audio inputs -turn the amp on -set your meter to VDC -put the positive probe on the inside of the input connector, being sure you make contact with th inner contact -take the negative probe and tap it on the outside of the connector
What you are doing is sending a low voltage (replicating an audio signal) into the amp audio circuit and allowing the amp to amplify it. If the amp makes the speaker pop each time you strike the probe, the amp is working.
You mentioned you need a 4 channel amplifier make the two, dual voice coil subs operate. The is not true and by hooking them up like that, there's a chance of damaging the subs. The reason is that the dual voice coils are interwoven and they have to get electrically identical signals or they fight against each other. The can mechanically fail, then, electrically fail, then even damage the amp too.