Originally Posted by John Schneider
I don't want to cause a problem for you, if this does, I'll delete.
What do YOU think sets the 2 apart? Is one louder than the other? Lower? More musical?
Would love to hear your thoughts on direct comparisons.
No problem at all John. I wouldn't have agreed to design the BMF after I already had mine in the works unless it would offer something different from what my SubMersive offers. I've posted comments on the comparison between the two at AV123's forum a few times, but here are a few points of comparison. If you're looking for a clear "this is better than that" from me, keep looking.
For anyone who has followed some of my past adventures in subwoofing, the best analogy I can give is that the SubMersive fully intended to deliver on some of the strengths I observed when installing the monsterous b-Deap subwoofers into rooms like that of "thebland's" and "Pete & Pam," but do so in a managable package that was sized and priced to make it realistic to deploy multiples. The BMF is much more in the footsteps of the ContraBass's strengths with both designs using different means toward similar end goals. The BMF of course does not have the high power linearity afforded by the servo-motor in the ContraBass, but it gains low level linearity, and the acoustic low passing and excursion reduction of the front 18" PR that serves to give it a similarly unique composure under fire.
In maybe 80% of home theaters, the SubMersive will have power to much lower frequencies, where I have observed useful in-room response to 8-12Hz. The SubMersive also has quite startling power above 35-40Hz and smooth response out to almost 200Hz (makes for easier transitioning). Aside from the in-room extension, the SubMersive has extremely good linearity right to its limits at all operating frequencies which will be visible in compression testing with increasing sweep levels.
The BMF is 6" longer and 6" wider than the SubMersive. It has significantly more power in the 16-28Hz range which will be very welcome in open floor plan rooms and those who can simply never get enough deep bass output. The BMF will be a lower in audible distortion within it's operation range, while taking a very close second to the SubMersive in dynamic linearity. The higher frequency, front 18" PR affords the BMF a very un-obtrusive sound character that is deceptive given its physical size. The composure under fire I describe translates to no foul noises from the subwoofer until you are significantly clipping the amplifier, which is at some pretty enthusiastic playback levels.
The BMF is a well composed powerhouse. On the flip side, no quantity of BMF's will deliver the sub 14-16Hz extension in-room that SubMersives allow, especially with multiples. One slight complicating factor is that the Velodyne SMS-1 can significantly truncate the low end extension of a SubMersive in an enclosed room.
The whole purpose was to offer some alternate options with unique strengths and benefits that deliver the dynamic capability I and many of you have come to expect in a top home theater.