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. Not even close to the solid and tight sound of the low end Velodyne vx-10 bought a few years ago.
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. I'm comparing this to the Polk 660 12" sub which is similar in price to the Dynamo 500. First ML for me and what a disappointment.
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. Strike one: The model I received was a pre August 2011 production model and did not include the wireless adapter for free. Strike two: The seals that hold the subwoofer cover in place when changing from front firing to forward firing were loose.