Thanks for stopping by and for your description of what you want to achieve with your setup.
Since this past summer, I too have been chasing the magic formula for balancing VNF and tactile via buttkickers along with the far-field subs. Buttkickers always felt gimmicky to me after awhile and I didn't really experience VNF until this summer when my father gave me a few subwoofers he had that weren't getting any use.
With several VNF arrangements and experiments over 3-4 months with those subs, I realized VNF also started to get "gimmicky" after awhile despite my best efforts for integrating them and tweaking them until they felt right.
Then, after reading a lot on the VibSensor thread and the ULF thread, it occurred to me that the only way to get ULF right was to simulate how we feel ULF in the real world...through our bodies, coming from below us. Not behind us, not beside us, not from around us, but below us.
Once I had that epiphany and discovering the ridiculously priced JBL's my imagination went wild and after a few concept builds, the BOSS was born.
The effect simply has to be felt to be believed. Incredible TR down to 3Hz and totally natural for both music and movies. I listen to music mostly when it's just me in the theater and the articulation of the bass and shear power brings a smile to my face every time. I couldn't imagine Crowson's being able to deliver the same experience unless I had 4 of them on each corner of the platform and even then, I'm not sure they would be as natural feeling as the subwoofers.
The BOSS also integrated so easily into my setup....I was originally thinking DSP would be needed to add delay at a minimum. But, that hasn't been the case at all. It feels so natural as-is and I'm just feeding it an LFE signal from the AVR with a LPF setting of 80Hz for the LFE....so simple, it's crazy.
After doing more research after the fact, the open baffle alignment is probably helping a lot with the ease of integration with my far-field subs. Basically, the open baffle configuration is allowing the back wave to cancel the front wave so there's minimum detriment to all the room tuning I had done prior. That's a great thing...I wasn't looking forward to the multiple sub tweaking He!! again...lol.
To answer your question about comparison to Crowson's, unfortunately, that's not in the cards right now. Kid's college expenses will be taking all our disposable income for the next 10 years...lol. I figure a fair comparison would take at least 2 Crowsons on either the front or back of the riser or maybe even 4 Crowson's on each corner or mid-points...that's definitely not going to happen any time soon with my situation...lol.
I was hoping those who already have Crowsons and the JBL's already...like
, could do the experiment for us...wink, wink, Nalleh.
Or, with your setup, maybe you could help satisfy our curiosity if you wouldn't mind spending ~$100 to build a BOSS (3 JBL's at $29 ea. plus a 4x8 sheet of 3/4" plywood)....wink, wink!
You'll be amazed and won't regret building a BOSS, especially a mini-riser BOSS for your low ceiling height. And, yes, the punch in the chest is definitely there with the BOSS...it gives me that coughing, rattling feeling in my lungs sometimes during some of the BEQ'd Porcupine Tree tracks when that kick drum is hitting oh so sweetly during spirited reference volume listening sessions....awesome stuff!