Need some stereo help, bigger speaker fitment

[FestYboy]

will they still do mids if i put those on? And cant i adjust it in the radio?

I have a high end pioneer headunit..
http://www.pioneerelectronics.com/PU...8600MP.Support

yeah, they'll still do mids (80Hz is pretty low for a 5.25 speaker). you headunit should be able to give you a high pass crossover point, but you have to tell it to use the internal amp adn seperate the rca output to subwoofer only.
i was under the assumption that you were using a stockish headunit. personally, i'd still run the passive units from parts-express and that wouls give you a 24dB/oct crossover (absolutly NO lows would go through the speakers) the sub would take care of everything from 65-70 and lower. you dont' want to set the crossovers at the same points as you'll get a hump around that common freq.