I've done all kinds of searches for the WM40 on the forum, but I'm looking for some hard numbers on how low this sub can actually go. Specs say 20Hz, but is that at -10dB or is it an outright lie? I need some hard numbers if anyone has them that would be great. I've seen the comparison to the DLS, but I am most interested in this supposedly 20Hz out put figure and any other variations of [email protected] figures. I will of course use the poly mod if I decide to get one.