Everyone involved should be commended for their contributions. Thank you all very much. I enjoyed watching the streaming video, with its surprisingly decent audio. I'm guessing due to corner loading/boundary effects, the LF coming through the feed was quite strong. During peaks, it exhibited some subtle overload somewhere in the chain,... but that didn't diminish the vicarious manner in which I enjoyed the little bit that I saw.
In no way am I criticizing your effort, nothing could be further from the truth. Each GTG offers insight on how best to move forward with each subsequent event. Each of you were generous with your time and contributions here.
In the planning thread, prior to the GTG, I posted the room will most likely weigh heavily on the impressions. Just like any room, unless great effort is put forth wrt optimizing the response in time and frequency, the room's signature filters each product's output in the modal region. The previous shootout that Madaeel put forth, clearly shows the room's domination;
The various measurements put up for the recent GTG illustrate a similar effect. The room dominates. Obviously, we all know this but having the time to deal with it is an entirely different manner. I also suggested, it would be ideal to eliminate lesser offerings, and have a head to head shootout with the strongest two products. With more focus on the strongest performers, allowing more time to optimize them to the space. A more detailed analysis of each products strengths and weaknesses would be illuminated for the participants, and then for them to subsequently share with the forum. Once optimized, even though sub placement and LP determine a great deal, one could get a good perspective on the two products capabilities wrt output and extension.
Now my opinion on the room's transfer function, and ability to eat bass
, I'm not so sure the diaphragmatic wall motion is responsible for the discrepancy. Also, what Bosso said regarding spectral content is spot on. You've got to examine the spectral content of the material, @ "x" spl. The EL curves illustrate to us how much energy may be present, can have little impact on our perception of the perceived loudness.
Loudness is an ambiguous, and highly subjective term. It attempts to describe the ability of the ear's perception of sound. The sound intensity, must be factored by the ear's sensitivity, to the particular spectral content contained in the sound. This constitutes the equal loudness curves. To more realistically assess sound loudness, the ear's sensitivity curves must be considered. Does this have something to do with the discrepancy? Who knows, perhaps it was merely placement, and the manner in which each product loaded the space, and the exact LP of each individual.
As all of us know, other subconscious influences factor in on one's subjective evaluation as well. An entire litany of bias' influences play a role whether we realize it or not. That said, those influences may, or may not have changed anything wrt to the outcome of the tabulating of the scoring. Our senses and perceptions can be easily fooled. That's why measurements, combined with a thorough theoretical understanding of a different sub-woofer topologies (inherent capabilities), are indispensable in helping to understand our subjective perceptions.
Great job in this evaluation, especially in the planning stages and product relevance. The vented HSU, and Cap are two that get considerable posting attention here at AVS. A SVS sub should be included in any GTG due to their solid design and driver quality. The sealed Epik showed it has few faults/high value. The Submersive rocked the show like it should. It's theoretically superior, and any dual opposed, well designed/constructed, highly capable sub would. IMO, the Epik and the Seaton are the two most relevant
sealed subs available today.
So yes, the relevance of the products was superb. The evaluation and subjective impressions were very interesting. The outdoor ground-plane stuff is the gold standard. However, the in room realistic application GTG/Shootouts such as this are very cool. A multi-day, elimination type shootout would be awesome. I know, realistically, that's tough to pull off. Top tier subs, representing each genre, could be included.
If I ever get my IB done, a GTG/Shootout including an IB would be very cool
For that matter, any future shootout would be cool in the presence of an IB or any custom, difficult to move sub.
Thanks a lot for your efforts gentlemen.
btw; IMO the discrepancy must be associated with the placement of the sub, or listener.