alright so heres the story like a month ago I bought 2 jbl 10s from a local pawn shop for like 100 bucks they both looked about brand new. So I got a 1900watt power acoutic amp that was givin to me from my friend. when we put it in it worked fine but the subs hit like really hard and we had to turn the amp all the way down to just get it to sound like it wasnt gonna blow the car up lol. But everythings been workin fine until recenlty my left sub doesnt hit at all we tried switching it from left to the right side to see if it was maybe the channel on the amp but still nothin. Any body know what could be the problem because the subs seemed like brand new and hit fine til like saturday night.

 

Sounds like your sub could have failed. Did you smell anything from the sub? they tend to have a unique smell before the voice coil fails if they have been overdriven. A few suggestions is (1) to gently push the woofer in to ensure its not siezed (2) place a meter on the speaker leads to measure the impedance (ohms)

Kirk R

 

Ditto the above^^^

I would also pull the sub and make sure wiring is still connected.

What is the model of the sub and the amp? 94

 

ive already took the sub out and checked the wiring. One of the wires were like pushed up to the side and really hard it looked weird almost like a 90 degree angle so I cut it off and still had enough to put everything back together and still nothin. you can like hear a little bit comin from the sub but not enought to amount to anything.

 

Have you tried pushing the cone in gently, [both hands] to see if it is seized, [cone will not move] or has a separated VC, [cone moves but you can hear a scratching sound, even feel it].

If cone moves and there is no scratching, check for dead spot, turn music on, not too loud, and push cone in.

You can also do a "pop" test, disconnect from amp and touch the speaker leads to a batt. AAA, AA, C, D or 9V, [9V works best], speaker should "pop" and cone should move, out if pos.(+) speaker lead is on batt. pos.(+) and neg.(-) is on batt. neg.(-), if leads reversed cone will "pop" in. 94

PS, if you have a multimeter you can also test for impedance, as mentioned.

 

ever think he fried his amp? my guess is he has no clue about ohms law. fcm im surprised that his VC config and the way it was wired wasnt your first question.. to OP find a buddy with an amp and hook the speaker thats not working up to it. make sure u use both voice coils if its dual. im sure fcm can help u with that.

 

mattison187 I'm surprised you didn't read the OPs post compleatly. 94

 

left to right side? if they wer single 2s and he put them both in the same output on a 2ohm stable amp.... you prolly see where im goin..