Amp turns off or goes to protected mode during long low base

Disconnect all speakers Meter power, remote, ground at amp, if all is good move on, if not check main fuses
Turn amp on; If in protect mode then your amp is toast Turn amp on, if not in protect mode then start reconnecting speakers one by one until your amp goes into protect mode, then you'll know which speaker is bad.

Sounds like you are running your subs at to low of ohm. Amps are rated differently on the levels of ohms or resistance that they can get to. If you have a dual 4ohm sub and run it in pairrell it will drop to 2ohm and if you run the same sub in series it will be 8ohm. Your amp will go into protection if the ohm is to low.

-david

One of your speakers might have burned out, shorting the wires that connect it to the amp. Disconnect one speaker at a time from the amp, turn it on(try all four, turning the amp on and off each time you disconnect a speakers wires) and you can pinpoint which speaker might be causing the amp to go into protect mode. If you disconnect all the speakers and the amp still goes in protect mode, then the amp is shorted internally and will need to be replaced or repaired.

The "safe mode" on your amp usually kicks in for two reasons - the ohm load on the sub is too low for the amp (presenting a "short" to the amp), or it's going into thermal protection because the amp is too hot. From your description, it sounds like there's a short in the wire, the sub's ohm load is too low, or the sub is partially blown.

If you have another sub or speaker, connect it to the amp's output and see if the amp still goes into protection mode. If the amp goes into protection with a known-good speaker, then there may be something wrong with the amp's power supplies. If the amp works properly with another speaker or sub, then I would check the sub that's causing it to short out.

You may also want to check whether or not the amp is over heating by just touching the amp when it goes into protection. If it's just warm, that should be ok - if it's hot, then it might be working too hard. In this case, you may need to check the input voltage (12-14VDC) and the size of the power and ground cables. If your ground isn't properly connected, it can cause weird problems like over heating, shorts, erratic behavior, etc...

Have you checked the REM wire, if it is the wiring may have gotten fried.

Or you may need to get new parts replaced within the amp.

Both issues happened to me.

First try unhooking the speakers and see if it continues to go into protect mode. If it does'nt then your speakers are running to low of ohms required for that amp causing it to go into protect mode. If it still goes into protect mode check your ground, might have a voltage problem and check voltage going into amp. I have read the manual and this amp has advanced circuit protection. So if all I have asked you to do and it still goes into protect mode then amp is faulty and has some output transistors shorted or power supply mosfets shorted. Let me know what you find. But you need to do what I have explained to narrow the problem down. Good luck, Keep me informed. I will be glad to help you thru this. I also have a business of repairing car amps and you will not find anyone cheeper. So if you want it repaired and you feel you can't do it, just send it to me and I will repair. If you decide this E-mail me at:[email protected] and we can discuss it in more detail. Just a thought to try and help you out. I have many customers that send me there amps and I repair them and ship them back. A few come from this site. Let me know

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If the amp is in protect mode, it probably has shorted output transistors. To eliminate other possible problems, do the following.

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 drops below ~11 volts, you need to check the wiring feeding whichever line is dropping too low when the amp goes into protect.

If the voltage is OK, you need to check the speaker wiring and the speaker(s). Try it with a known good speaker if possible to see if the amp works normally.

If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.

need more info, make and model of amp and subs please

may be the inpedance is too low , poor current...i try to change a wire alimentation for one of number 4 ...and screwed gnd! gd look!!