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i have a all alpine system 2 12" type s subs 2ohms with a mrd-m500 amp pushes 900 wats i also have a cda-9853 head unit 05 modle new i got the alpine type s rear speakers and front but i have it all hooked up my amp turns on and everything all my wires are hooked up right iv talk to everybody best buy ect and i tryed what they said and it wont work i get power to my amp but my subs wont play or do anything and i dun no what the prob someone help me

 
Rep Power: 321

are you sure that your amp is getting a signal from your headunit? maybe you connected the rca's to the wrong outputs...

 
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chances are its the remote wire

 
Rep Power: 281

check ur remote wire from the HU. Also, check that no wires on ur door speakers are touching metal, decks have a safety feature on them and wont play if thats the case. Check ur fuses too just in case u blew one if u have a distribution block. Check the voice coils on the subs and make sure they're hooked up right. Check the deck itself, if it has a sub input, make sure the level is adjusted, or turned on. Make sure the RCA's are in the right spot. good Luck

 
Rep Power: 0

it can't be the remote wire because he said that the amp turns on. Like umysugarmami said, it's probably the RCA's. On amps, you usually have the input and the pass-thru output to connect another amp, make sure you put it in the input. Also, on your HU, your sub-out maybe turned off. Go in your function menus and check if the sub output is on

 
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If after that ^^^^ doesnt work, then run a set of rca's from your amp(in the car) to a radio on a bench, and see if your amp works.

 
Rep Power: 321

i doubt that it is the system wire b/c he said that the amp turns on.

 
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also make sure u have power to your speaker terminals... get a DMM and check to see if 12V are running through the speaker terminals, but yea i'd say rca's are your problem

 
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on my alpine 9833 i needed to turn on the subwoofer. Make sure the amp is set to lowpass freq.

 
Rep Power: 786

heh

its not the remtoe wire, the amp turns on

the deck will not protect if there is a short, the amp will

there is no fuse problems, becasue again his amp turns on

check to see if you are getting signal