You have money to burn. That speaker is dead. It just hasn't yet been cranked up by the amp you have , which is too strong for it. Then the dying process will be completed. Your speaker should have a higher power rating than the amp. You may be mindful of not putting the volume at its upper limit, but passengers may get passionate and do it-
blammo, poof, sorry I messed up your ****speaker
dude, next time spend more of your money.
Less amp or more speaker, and nobody but you can touch the volume.