Excellent driver - but pricey and needs passive radiator
David B. Jones, Amazon
21 May 2013
Summary: A few years ago, I made a very nice sub using this driver and a matching passive radiator. I also made an extra box. Recently I decided to make the second one. Two problems. One is that the driver cost about $65 more than the original. The other was that I had a heck of a hard time finding the matching passive radiator. When I did finally find one, it was a lot higher also.