The DB2D is a fantastic subwoofer. The sound quality is 5 stars but I'm giving it 4 stars because the Android App does not work when trying to initially set up the sub. In the end, it ultimately does not matter because my Yamaha 3070 amp has YPAO equalization routine. After running the YPAO routine, the sub was perfectly in phase with my stereo speakers, B & W 705-S2s.
Three sets of feet are supplied with the DB2D: metal spikes for carpet, hard plastic half-moons for hard floors and foam spikes, also for hard floors. I used the half-moon hard plastic/rubber feet on a tiled floor and placed the sub about 5 feet from a corner and about 5 inches from a long interior wall, about 2 feet frrom the left stereo channel speaker.
With the bass volume turned up, I can feel the bass from my seating position, about 12 feet away. I tested the sub and found it to be awesome, watching Independence Day and listening to the Dire Straits, Brothers in Arms song.
The sub has a trigger which I have not set up yet. It has an auto-off feature after 20 minutes of inactivity and turns itself on when I turn on the receiver - in effect, you do not need to use the trigger.
I'm feeding the sub through the LFE RCA jack.
This is an expensive speaker but it performs at a level of quality commensurate with its expense. I'm looking forward to years of enjoyment.
