possble sub blown, help please

[PepsiFiend69 10+ year member]

ok so i noticed that my subs we'rent as loud as they were, and i thought maybe it was just a mental thing like it is sometimes. but just in case i popped my trunk, and pushed on one of my subs, there was a very very very very slight scratching noise, like the noise that happens when you blow i sub, but it is nothing like a blown sub feeling, it was just very slight. on my box i have the port on the left side and the sub on the right always moved way more than the one on the left closest the the port, and this was the one that im having trouble with. can anyone help me? im going to pull them out tommorow and look for a blown coil what does a blown coil look like? im sure this sounds stupid, but i need some help. thanks.

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[stones 10+ year member]

Sniff the vent on the back of the sub, if you get hit with a horrendous odor like burnt sugar there is probably thermal damage to the coil.

 

[PepsiFiend69 10+ year member]

it doesnt smell at all, it just doesn't seem to play as loud, it kinda does this on and off everyonce and awhile, im thinking either lose connections or the weather affects it.

 

[stones 10+ year member]

Temperature will have strong effect on subs, is the difference noticed only when it gets cold?.

 

[PepsiFiend69 10+ year member]

i dont really remember come to think of it now, all i know is that it had been a little warmer a few days back and it would hit really hard, and i could drive with my windows down which made it hit even harder, the thing that concerned me was the slight scratching when i pushed it in, maybe it had always been there and i never noticed it, im gonna build a new box tommoroow and see if that makes a diffrence.

 

[stones 10+ year member]

i dont really remember come to think of it now, all i know is that it had been a little warmer a few days back and it would hit really hard, and i could drive with my windows down which made it hit even harder, the thing that concerned me was the slight scratching when i pushed it in, maybe it had always been there and i never noticed it, im gonna build a new box tommoroow and see if that makes a diffrence.

Its normal for the coil to scratch a little bit if you press down on the cone off center, its when you press on the exact center and it scratches that is abnormal.

Try a 9volt battery on the terminal and see if it still does it.

Cold weather causes all the soft parts of a sub to stiffen and will lessen its sensitivity, being from Canada I can say for certain that there is a huge difference in subwoofer performance when the temperature get really low. Even the siren on my car alarm will chirp differently in the extreme cold (sounds kinda funny too like a squeak).

 

[DrMurdock 10+ year member]

i noticeds that too. i live in nyc. last night was pretty cold and i realized my sub didnt play anywhere near as loud as it did only 2 days ago

 

[PepsiFiend69 10+ year member]

yeah, it must just be the cold weather...its just weird because they move as much as they did they're just not as loud, maybe it has to do with the air density? i dont know, thanks for the help, i was scared there for a minute lol