Mark - Thanks for posting your thoughts! Looking forward to hearing from Nathan and Adam too.
Here are a few of my own:
A few notes - This was a very informal GTG for us to just hang out and listen to a few clips on all the setups. We used my Denon 4311ci receiver, minidsp for eq, SHO-10s up front, and my PS3 / Mark's laptop for media content. My room has some basic treatments including front and rear bass traps, and side wall reflection panels. A variety of amps were used throughout the day including Mark's Crown XTI2002, my EP4000, and my LG Clone FP14000. We listened to a few popular clips from the Art of Flight Blu ray, the Scuba Steve disc (Hulk, HTTYD, WOTW, BHD Irene) as well as a few Blu Ray concert clips I'm familiar with. We also played around a bit with the 10hz to 100hz sine waves at moderate levels. In addition, Mark played a number of his own creations and even broke out the synthesizer at one point, which was pretty neat. It was amazing how quickly the day went with just a few simple setups and really no formalized process.
A few measurements - these were all matched to the same level at 20hz - with the sump basin setup in the mix this was really the only logical point. I'm aware this isn't ideal, but it was what we had to work with.
After EQ - keep in mind none of us spent an extraordinary amount of time with the eq process, we did our best with just a few simple filters.
Mark's 4 X ported Sump basin setup powered by a Crown XTI2002 - Wow, you guys have got to see the pictures when Adam gets them up. A+ for creativity for sure - we all agreed they look like they belong in a sci-fi film. We hooked these up for fun - and a lot of it we had. We listened to a majority of Mark's created music with these (house/electronic/dubstep - please correct me if I'm mislabeling!. I was impressed they had some decent impact in my room which tends to really suck up the bass! The presence of these 4 beasts in the front of my room had a dominating effect.
Check out the output at 20hz and below with these guys. The overall curve was a bit crazy, likely due to Mark's port tune. Mark experimented with various points of EQ using my minidsp to try to smooth the curve out a bit as you can see before/after EQ. Mark can probably add some additional details to the build.
LMS x 1 in the 'wooly mammoth' enclosure - Austin was kind enough to lend us his LMS for the day. I believe he stated the enclosure is right around 4.2 cu feet, sealed, and I believe had minimal to no bracing. We used my FP14K clone to power it in 4 ohm stereo (one channel) which is rated at 4400 watts. As you can see the single driver has no trouble extended deep down to 6hz in my room. The first thought that jumped out at me was how insanely quiet the driver movement is. There is no noise related to driver excursion, yet we would feel the couch shaking, etc. There was a significant difference (decrease) in slam/punch from what I remembered the last time we demoed the pair back in October. I would think a well braced box and a sicko behind the remote would have made a drastic difference though. Note: Since this was not our sub, we stayed relatively conservative when listening to the various clips, but still managed to get some crazy excursion going. I'm sure Austin in person would have pushed it a bit further.
Dayton 'Silverback' Dual opposed setup - These were also powered with one channel of my clone amp, although at 8 ohm stereo at a rated 2450 watts. The box is right around 7 cubic feet net. This is my own sub, so obviously my comments don't carry a whole lot of weight. I did think they performed decently for the money spent and the clone does a heck of a job powering them as well. I was happy with the way they held up since I was pushing them pretty hard.
BTW the Captivators were demoed to the group using my EP4000. The buyer who was coming to demo owns this amp and wanted to hear how it would sound in his same scenario. I kept a 19hz HPF applied, but it likely wasn't necessary with ~1000w per driver. They were run without port plug in 20hz tune.
At one point we experimented with amplifiers.
Other random testing:
At one point we subbed out the EP4000 with Mark's XTI2002 and played back to back music clips to see if we could tell any difference between the two amps. I thought they sounded very similar and I believe Mark stated he felt the same.
While we were eating lunch, I figured we could check out the Epik Empire pair. Mark hooked up his laptop and provided some punishing content and we blasted away. It was obvious some of the super low stuff was a bit attenuated compared to the higher end sealed setups we had run downstairs.
Big thanks to all who came over yesterday, I had a blast as usual. Can't wait until the next event. Shooting for mid-late March timeframe?Edited by Gorilla83 - 12/16/12 at 3:21pm