does this setup work and is it any good, im lookin for a punding sub and an amp, but i still want to hear teh tweeteers

 

yes it will work ok with the bose system. I have installed hundreds of subs withfactory radios and 7 times out of 10 they work fine. What you will need is a high-low level converter, 16ft RCA cable, 8gauge power-flo kit(for your sub amp) and an optional bass module(allows independant control over your sub). Id say look to spend around $75-100 for everything you will need to wire up your amp to the bose system.

any other questions feel free to ask,
Anthony
MECP "certified car audio installer"