Can i install aftermarket speakers with new dd and bose?

[Chetrick87]

Yesss i got it. I took it out earlier and turned it up. Its 100x better now. Thanks guys. Still going to change out the speakers and tweeters. Next question is, is there a crossover that filters out low frequencies to the tweeters? Obviously there has to be right? I have a good set of digital design mids and tweeters but no crossover