Install help! Sub isn't moving!

[neoxxt]

Here's the scoop:

My girlfriend is out in Vegas for the weekend and I borrowed her car to do an "oil change" while she's gone. So far, the car has gotten a 1.5" drop, new rims, interior speakers and subwoofer.

Anyhow, I've got everything in and looking good. Interior speakers are working fine but I can't get anything out of the subwoofer. The ground is good on the amp and I DO have a turn on lead hooked up. (I know those are two things a lot of newbs forget.) I've used a volt meter and I get voltage at the power/ground terminals, the speaker output terminals, off the rcas, off the end of the speaker wire into the sub box, off the end of the wire from the sub box to the woofer. The woofer checks out okay by "popping" it with a 9v battery, so that's not blown. The sub level is adjusted all the way up for testing purposes on the headunit. I've messed with the gain and crossover on the amp and get nothing throughout the entire range.

The only thing I can think of is that the rca plugs on the amp are bent a little from my last install (this amp is incredibly old... Cadence Ultra Drive for those in the know wink.gif ) and maybe the amp isn't receiving the signal from the head unit? I tried to wiggle the RCA's while they were connected to see if it was a shitty connection and it didn't change the scenario.

I'm at a loss. The amp is in "run mode" meaning no diagnostic light. What the hell can it be? What else can I check? I may try another amp of mine to see if that is the problem.

Any help would be appreciated!

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[kross 10+ year member]

Well ****, that is weird. You say you get signal at the speaker wires right where they hook up to the subwoofer, using your volt meter set to measure AC. Just out of curiosity, how many volts do you get? If the level is really low, like less than a volt, then I can see it not driving the speaker. But if it's like 15 volts, then I really have no idea, other than to triple check the wiring at the sub.

 

[NeedDirections 10+ year member]

I would try new RCAs before you got another amp.

 

[85Caprice4d 10+ year member]

had the same problem, wasnt the rca cables, i think its the internal rca on the board connection fried? but in mine i looked and they seem fine....let me know what u findout and ill do the same

 

[bloodhound50 10+ year member]

Are you using a distro block?

 

[billabongcr 5,000+ posts]

make sure:

1. you have some sort of radio.

2. you have some sort of amp.

3. wires actually touch the sub.

 

[budget76 10+ year member]

I have to say it, no matter how dumb, the sub is connected inside the box to the terminals, correct?