Summary: I purchased this subwoofer on January 17, 2012. Today it is July 24, 2015. Like many of the reviews here, my unit started the loud humming sound even when everything is disconnected from the woofer. It looks like the mean time to failure for this woofer is about three years... rather disappointing.
Summary: Sound is fine. Workmanship is fine. Reliability has been terrible since about 12 months in. Loud popping noises would appear and then vanish for months. Now, just humming. No sound. Dead. $500 for 3 years of very light use--not a bargain. Would not buy again.
Spec changed - Frequency Response is 35-200 Hz not 29-200 Hz as claimed by ML
6 January 2014
Summary: Received a few days ago. Was surprised to find the included manual states the actual Frequency Response is only 35-200 Hz, not 29-200 Hz as claimed by ML website. It sounds soft and boomy, more like the low end Polk Audio Psw108.
Summary: In movies, explosions and lack the deep rumble. In sub tests, it can hit 35 hz but completely falls off at 30 hz which is key desirable for a sub. It also has an annoying audible hum while on which is unacceptable. Build quality is on the cheap side.
Summary: I currently own a Martin Logan "New" Dynamo 700 which I rate 5 stars. Based on my experience with the "new" Dynamo 700 I decided to order the Dynamo 1000 in March 2012 for my small home theater room.