The fronts are 5.25 in size, i'm assuming the same "woofer" style you are mentioning. Like I had mentioned, I don't have the Bose system, so this crossover from the amp is non existent. I've always purchased 3-way speakers in the past for upgrades, but was curious on the 2-way speakers as a 3-way seemed to lack the lows I was enjoying in the OEM crap speakers.