Blown Bose speaker

[skullone]

I've had my 3 for about 6 months now (2006 Grand Touring / Bose).
I never sit on the passenger side, obviously, but I was cleaning the car with some music going, and the front passenger side woofer makes wierd rattling / humming sounds from certain noted, yet the drive side does not.
I've never had a blown speaker, but it sounds to me like it could be.

The Bose for the most part sounds pretty decent for factory, but I'm wondering if its even worth getting warranty work done, or just upgrading some speakers as I can afford it.
My dealership is pretty annoying to work with, and I'll be they'd find some way to **** up the repair, unless they could just get me a replacement speaker and let me do the repair

But what are some telltale signs of a blown speaker? Does it sound like crap on all ranges, or just certain ones?

 

[BrianG]

Before you assume it's blown, pull off the door panel and see if there is something on the front or back of the speaker (debris of some type) that may be hitting the cone as it moves. A blown speaker can be determined by one or more of the following:

- Can sound scratchy from a warped voice coil rubbing on the magnet as it moves.
- Can sound "funny" if some parts of the coil is melted, therefore lowering the impedance and causing the amp driving it to work harder, possibly clipping from the excess current.
- Not work at all if the coil wire is open (broken).
- Lack of bass response due to torn/unglued surround (air leaks)
- Fluttering/slapping/buzzing sound due to torn/unglued spider, surround, or dustcap vibrating against something else. This sound can also be caused by loose tinsel leads (the wires from the wire terminals to the cone/coil).

Either way, any sound that is not "normal" indicates something wrong. If it's just something unglued, you can usually repair it cheaply by re-glueing it.