think i blew my sub..what would be some signs?

[r1dermon 10+ year member]

bi-amp it and push say...6-8000w rms to it, you should know instantly if its blown.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[DBfan187 5,000+ posts]

0ohms w/ a DMM

sctrachy sound

cone won't move or barley does

p.s. - does your mouth hurt?//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Chevyaudio 5,000+ posts]

yeah, like DBfan said push on the cone and listen for a scratchy sound...But make sure you push in the center of the cone.

 

[UndercoverPunk 5,000+ posts]

quickest way to see if the VC is blown, IMO, just lightly push down on the cone...if it moves, then you know the VC isnt fryed, check something else. If the sub is frozen, scratches and grinds when you push down, you have a blown VC.

Nope, I've seen VC's blow before it even gets to the coil, just pops the wire running down the former, if that were the case and he did your 'test' then he'd never know, where as a simple check with a DMM would tell him right away.

DMM>anything else

 

[Chevyaudio 5,000+ posts]

DMM>Type R

 

[DBfan187 5,000+ posts]

p.s. - does your mouth hurt?//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[AznRevlAzn 10+ year member]

quickest way to see if the VC is blown, IMO, just lightly push down on the cone...if it moves, then you know the VC isnt fryed, check something else. If the sub is frozen, scratches and grinds when you push down, you have a blown VC.

unches you in the face:

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[AznRevlAzn 10+ year member]

Set the DMM to Ohms, and touch the black lead to the negative terminal on the coil and the red lead on the positve terminal, and read the display. a 4 ohm coil can read any were from 3.6-4.5, but if the coil is blown ive seen a coil read 100 ohms or some unreasonable number. If you are still confused PM me and ill give a more detailed explanation.

not always, when measuring resistance it doesn't matter which lead you use //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[audioholic 5,000+ posts]

Never push a cone in and out, not to see what kinda excursion it can do, and not to see if it feels 'blown'. You can very easily push a speaker out of alignment and end up rubbing the coil/former. You could be ruining the perfectly good sub you are trying to diagnose. Also, feeling the sub for free cone/coil motion will not give the whole story anyway. You could have a shorted voice coil and the cone would still appear to move perfectly normally, but a quick check with a DMM would show the short in the circuit (would read 0ohms).

You said the subs are dvc wired parallel, are they wired to each other as well, creating one single mono load? That appears to be what you meant. And if so, I do not see how one sub could break a tinsel lead, short out a coil etc without the shorting the entire circuit. If this were to happen, both speakers would stop playing, not just the one. So either you do not have the system wired as you implied (all coils paralleled into a mono load) or the problem is not one of those things.

Good luck and keep us posted.

 

[slikrider20 10+ year member]

Okay...

well today i was messing around with it, and i wiggled one of the tinsels and it suddently worked. howerver i had to keep my hand on it for it to continue playing and make a connection. I have it wired with 2 dual 4ohm's in parallel, with the wire coming out of the amplifier going to the sub with the faulty tinsel. However, the other sub STILL recieves the signal and works perfectly. I don't get it.

 

[JCivicHb 10+ year member]

like i alreay said, they tinsel leads get frayed and loose on those subs, its pretty much done for, i wasnt ever able to fix mine, try calling PG but i doubt it, they discontinued the particular model because of so many problems....

 

[Ignatowski 5,000+ posts]

PICS of the quitter!