Hi, sorry if I bumped in - I have no relation with the owner and I know this may not or none of my business, but from logical term of view, your device met with an 'accident'.

So unless you are 'insured' then you may claim, 'warranty' is just for product which are defective - meaning if the tweeter produces a cracked sound or have no more sound - then you are able to claim for warranty.

I feel your loss that the sticker came out of place - but this may happen because of the heat build up inside your car that makes the adhesive loose.. and unfortunately it came off + you didn't realize that it did and slammed the door causing the tweeter to break 'because of your own doing' - mistakes - or accident - hence it is not covered under warranty.

However, I will let the business owner decide, for me it's just an explanation so you don't hope much.