Sub may be blown?

[17WthaCoronetRT]

i have a dual 12 that i think is blown, it doesnt make a scratching noise when i push it down but when im close to it, it rattles unlike the other sub does, and yesterday the 2 12 subs went down to half power and i believe it is because of blowing one, any help?

[codyc1ark]

Huh? Please be a little more clear, are you talking about car or HT subs? Are you running an external amp? Half power?

Welcome to CP, I'm a bit confused by your post, but if you can give us some more information I'm sure we can help you get to the bottom of the issue!

-Cody

[17WthaCoronetRT]

im running dual brand 2 12" subs in my 1989 buick, ive had them hooked up to my 1200 watt hifonics brutus amp for about 2 months. the amp has a bass boost remote and i usually have it all the way cranked up, the subs are 550 watt peak subs each. yesterday while i was driving the subs went from cranked up full blast to about half power all of a sudden (i dont know how to put it more technically, im an amateur at car audio). so i took a look at the subs and played some songs with bass and put my ear close to each sub, one had a small rattle, the other did not, so i took the one with the rattle inside and did a test, the 9 volt battery test showed it still pumps, and it doesnt make a scratch noise when i push the cone inwards. so i dont know if it is blown, i figured its a sub problem as the amp is newer and stronger than the 2 12" subs, i hope that was more clear

Tyler