As a long time installer, I will answer this question. First, the previous answer lists 3-way components as a solution for the rear. Components are a speaker system that have a separate woofer and tweeter (low and high) with an outboard crossover (piece that send high to the tweeter and low to the woofer). A three way set has another low speaker.What the answerer wanted to say is a three way coaxial speaker. 2 way, 3 way, it doesn't really matter. The best solution is to actually listen to the speakers, since that what they are for and pick the one you like and want to pay for. You should go with coax speakers all around unless you want to get into amplifing them as a general rule. Some brands to start off with would be Polk, Alpine, JL Audio, maybe even some Focal. Infinity seems to be an entery level favorite.Another question to ask is why are they blown? They can become damaged without our help however, most of the time they are blown by the user not knowing there limits and pushing them into distortion. Which should be very apparent. If you don't know what this sounds like (the sound completely changes from what it should sound like and has added awful tones) as someone at a store. Typically you will here the bass get splatty first. If you like a lot of bass, you may want to consider a small sub and amp, as the speakers are not designed to produce a huge volume at those low frequencies.