Im buying my boyfriend speakers for his speaker box cuz his speakers broke. only thing i can find are car speakers but im not sure if they will work. could i connect them to his speaker box and have them work?
Speaker drivers (woofers, tweeters, etc.) are pretty much speaker drivers, whether designed for the car or the home. The difference is that the home speaker drivers are built for specific cabinet configurations (which actually provides an amount of frequency tuning), while car speakers are designed to be installed behind door panels, dash boards, etc. But, if you have a speaker cabinet (box) that is designed for car speakers, there's no reason you can't hook them up to a home stereo system.
I've seen a friend do that - him and his dad built a custom wooden case, and mounted in a set of Sony xPlode's. Dam*, those were pretty kickin'. And I've done the reverse - I've used speakers from my bookshelf system in my car. - looked really ghetto having them in the back window and stuffed under my front seats, but it beat paying for new speakers.