Amp is on, but subwoofer is not working?

[scheibler 10+ year member]

I've got a used SSA DCON 10" and alpine mrp-m350 amp. The amp is hooked up to a line out conerter tapped into my rear speakers with the amp recieving power. The sub is wired in parallel and is a dvc 4ohm sub so the amp's output is going to be 2ohms. I've got both sub terminals, negative to negative and positive to positive. The wire connecting the box is connected to ONE terminal...that is correct right?

I've checked all the wires again and again yet can't get the sub to do anything. I changed grounds to no avail. I bought a used sub off a member on this forum (lil98cabrio) and am starting to think it's blown, but don't have another sub to test.

Is there a way to test the sub or amp with a dmm?

Click to read more...

 

[scheibler 10+ year member]

Well I bought a JL Audio 500/1 today from some guy who bought a 350z with that and a jl w3 in it...FOR $100!!!! Same thing as the alpine though. Either the LOC isn't hooked up right or the sub is blown?

Any ideas?

 

[All_Logix 10+ year member]

Try this, hook up a portable music device like and iPod with an RCA to 3.5 mm directly into the amp and see if you get some sound, if you do, you can assume it's the LOC, if not there is another problem. If you have a DMM handy, put the leads on the +/- terminals of the speaker outputs and put it in AC volts, you should be getting something like 15-30 volts (just a guess) and it will be rising and falling, if there is not voltage across the terminals, then the amp is cooked, and lastly if there is, it's the speaker

 

[scheibler 10+ year member]

I'll try that. Thanks for the info.

 

[scheibler 10+ year member]

got the sub workin with the rca to mini jack...must be the loc. Gonna buy a different lock that doesn't have that built in remote bs or a pair of speaker level inputs. thanks!