I'm not worried about integrating the caps yet. I'm just playing with sealed to get a handle and feel for sealed alone first. All in due time.......
We may disagree here, but I'd line my two caps up against five or six of those sealed UM18"s and feel comfortable saying it'd be comparable in output on any material you want to throw at it. (above port tune) I'll have some feedback tonight from my buddy who has only ever heard the caps one time (yes @popalock
, the same friend who also recently went to carps and said he preferred the sound of the ported captivators bass over the eight sealed subwoofer bass -- different strokes for different folks) --- though I did crank the snot out of the caps. We listened to a few demo clips at 5dB over reference with the caps running 6dB - 10dB hot on his last visit. He couldn't believe how loud and clean those two ported 18's could go. He was giddy, fascinated by the sound, and laughing at how loud it was in the basement bathroom. Came out running saying I had to check that out. I do expect him to think the eight sealed 18" offer more output after taking them to max tonight, but I don't expect it to be a knock down drag out comparison. The caps hold their own on SPL output above 20hz as you'll recall from the 2011 meet where the single powered captivator made everyone in the room giddy during their demo. I can get into the low 130dB range at my seating position with the pair of caps without any hardship. If it's uber low material - I simply turn the analog HPF up a click or two on the mic2200 and set it loose.
Any rate - each time we play with EQ and work at setting it up a bit differently with these sealed it seems to get a bit better. My favorite so far is how it is setup now. Before last night's demo session I think I always preferred the caps more, even though I recognized some things seemed superior on the sealed, last night was the first night where it perhaps began tilting in the sealed's favor a bit more me.
These are the changes I made last night, subsequent to your configuration on tuesday night:
- Semicircled the subs so the distances from each of drivers to the center seat are more similar as well as the differences in placement in room helping to eliminate that nasty null we were getting with the subs all in a line.
- I broke the subwoofers into two groups - each run off a seperate subwoofer channel on the Onkyo PR-SC5508 instead of all subs run off one channel. (I should have done that earlier) The six up front are on 3 channels of the two iNuke DSP 6000s. All have the same exact EQ settings, all run off Subwoofer output 1. All level matched in pairs (which also happened to end up gain matched on the amp based on their distances being similar -YES, I won't have to worry about one pair running out of steam earlier than the others), and summed to the proper reference calibration dB as a whole group of six.
- Changed the LT12 to be a 9dB boost instead of a 12dB boost and the dynamic boost LT12 to be a 6dB boost instead of a 3dB boost.
- The two subs behind the chairs are now on subwoofer output 2. (turned off the manual delay you configured into the iNuke and just let Audyssey set the delay.) I also turned off all EQ manipulation on the nearfield except for a 9dB LT12, and a 6dB LT12 dynamic EQ. I just wanted a gorilla83'esque EQ for the two nearfield subs - let em sing!
- So overall it is the same boost at lower volumes, but less at higher volumes since I actually shut down the amp a couple times at insane volumes (or much lower volumes and 5hz test tones ) before I made the changes.
I think your group EQ settings from tuesday night still worked fine, most of the changes were minor - but they seemed to fine tune it a bit - something I plan to continue to do. The two subwoofer outputs makes the timing perfect in the main seat where as with the manual delay it felt just a bit off to me (sort of a bit like transducers often do). (I probably could have got it there with manipulating the distance settings, but easier and more accurate feeling to let Audyssey just set the distances. Distances are set for front sub to 11' instead of 13' and 4.5' for rear subs through the pre-amp.
My ears are ringing today, and I've been dead tired for like a week straight -- but I'm having a good time with it. More binge audio tonight with those couple friends. Then the blind speaker test tomorrow night with whoever in KC is interested. Then my wife comes home Saturday, and life goes back to normal.