I bought this for my M&K V-1B sub only to realize after the fact that this is a single voice coil driver and I needed a Dual voice coil design. Electro Mavin was cool when I called them and told me just to ship it back and they would give me the DVC version no charge... (which is not listed on there website)
I tried this as a replacement in my M&K VX-1250 subwoofer. It's every bit as good as M&K's Super Fast Driver (which I also tried), maybe better. The only difference that I can hear, and it's very subtle, is that the Electro Mavin driver has a little more punch. In general, compared to the M&K driver, I found this driver to be better for home theater and just as good for music.