I am looking to build a good quality single driver powered subwoofer. Looking for dual voice coild with long excursion but must be accurate( i know i am asking for it all). I have been around Speakers along time (mainly mobile). I was looking to spend around 400 dollars on the woofer. I wanted to build something along the lines of a sunfire or something with great output. If anyone is familiar with a sub please reply. I was looking into some DDaudio, If you are not familiar check them out at DDaudio.com i want to use maybe the 9500's. I was planning on using 2 amplifiers. I basically need lots of output with decent sound. But a durable woofer.