yesterday me and my friend installed my alpine mrd m300 in his s-10 to see if it worked because i haven't tried it out yet. it worked fine. worked fine when we took it out. i went to hook it up in my car today and everything works fine. it powers on and everything except it wont push anything to the sub. i know its the amp because we hooked my sub up to another amp and it worked. it seems like something has gone wrong with the speaker input slots. i hope that i can fix this here because i don't want to send it back to the factory. somone please help. thanks.

 

is there a protection light? grab a voltmeter and check all connections in and out. crack the sucker open and take a peek

 

if it is the digital amp make sure it is not in safe mode, we have had problems with this at our shop.

 

Same thing happended to my amp just 2 days ago luckily I bought the warranty with Best Buy and they replaced it on the spot!!! If you bought a warranty or something like that take it back!!!