Car speaker problems!?!?!?

I have have many brands from expensive polk..to audiobahn and pioneer 6.5 inch door speakers....for some source after about a 6 months i conclusion up with one speaker that i guess fries a voice coil or something bc it have alot of static and only plays division of the time and when there is bass within the song is sounds like its going to blow up lol......someone at a sports car audioplace said it was call "bottoming out"......i have an alpine cd boss unit and 2 10 inch subs and a amp also...but i doubt that have any effect on the door speakers??..i normally run the speakers pretty loud,Not full volulme but loud most of the time....im going to buy a current set of 4 yet again..im thinking of the inifinity kappa mayb? Could u please detail me what could cause these speakers to mess up AND what brand i should expect about buying that wont break my wallet any

Is JL as apt as everybody say?

Answers: I will assume that the speakers RMS rating is higher than the amp driving the speaker. I would enjoy a look at the mounting surface. Are these a direct bolt in. Is the speaker secured properly within the mounting location? If the speaker is contorted or flexed wrong it will damage the speaker.
Check to see if the system is properly grounded.

Where can i buy stereo connections for...

you should chose red named company speaker that will best for you.

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