Alpine MRD-M501 powering two Alpine 10's, I'm driving along the other day, not playing it very loudly or abusing it at all and the subs stop giving output. Today I checked all the fuses on the amp and the power wire, and even checked the wiring with a voltmeter, everything is good. But the amp won't come on since it shut off on it's own.

I actually have two of these amps so I hooked the second one up to it (to see if the first amp was the problem) and I'm still having the same issue.

I took a lot of time to do the wiring to make sure it was correct... power is good, ground is good, all the signal wires etc etc

I just checked the remote lead off the back of the head unit and that's fine too.

I'm baffled over here.

 

Use a DMM to measure the voltage at the amplifier for power, ground and remote.

 

I used a voltmeter and everything seems normal

 

fuses?

 

What kind of fuse are you using on the amps power lead?

Have you unplugged the subs speaker lead and checked for continuity/impedance on the leads, did something maybe come loose in the box, and what Alpine 10" speakers are you using and how are they wired in the box? 94

 

Along with what others have said check power ground and remote under load.

Which means, check the voltage while you are playing music.

You can also test the speaker output of the amp with a DMM. Set you DMM to AC and measure the voltage while you are playing music. It should go between 0 - approx 30v max. You will get an RMS reading and not the true output, but it should give you an indication if the amplifier is working.

 

yeah take it off and put the speaker terminals to the amp power see if it pops. maybe u turned off subwoofer on your deck? or your amps maybe out?so many posibilitys.

 

If both amps dont make any noise, and your power/ground/remote wiring checks out, then you need to look at the subs.

Pull them out & physically check the connections. Hook up the amp & run a test speaker to it, see if both amps can run a seperate speaker (any speaker other than your subs).