I like this 'for fun' measurement of ULF capability. It's nice to put things in perspective and give some form of relative comparison - such as the output of some of the wild systems on AVS.
We recently moved into our new home, and as such I had to reconfigure everything in my setup. I am still weeks/months away from finishing, but I have had some fun in the meantime...
Subs I am currently using:
2 x LMS-U 18's sealed in 4cf each - powered with a clone FP14K (Thanks again MK)
2 x LMS-R 15"s dual opposed ~6cf - powered with an inuke 6000DSP
based on modeling the pair of 15's are very close to a single ultra, so I'll go with 3 DIY LMS-U as my 'si number'. Please correct me if I should use something else.
The current but temporary home for the system is in a 1500cf sealed office/room, which at 10Hz is 1500/5.7 so 263. It is pretty insane in there, even though I don't watch much due to the 42" tv. ULF is very apparent, much heavier and physical than my old room which was an L shaped mess of about 2000cf.
We are prepping and getting ready for the permanent room, a 3200cf area open to most of the basement and stairs. I will be using the LMS-U's or other sealed 18's nearfield, and adding another undetermined amount of sealed 18's until I'm either satisfied or my wife threatens to leave, with the dual opposed LMS-R's going into our living room. I guess I can add up some options using this ULF score, and at least have a good idea of the level of ULF output it will produce. I know it isn't entirely accurate, but it's a good place to start.
Assuming I have to live with my current setup in that large room for some time though, that makes my 10Hz score 561. Still pretty good I suppose.
Earlier I said I had some fun - here is where it happened:
The week after we got our furniture delivered from the moving company (sidenote: it's stressful moving 2 beautifully finished Funk Audio 150lb boxes with lms-u's
) I decided I needed to test everything to ensure no damage, properly working etc. for claims purposes. The movers put all the (very heavy) subs and speakers in a small spare bedroom in the basement, even though we asked for it in the office area. Not a big deal, I'd just move it into the other room as I set it up. I decided to test everything in this room though, as it was all together already.
I unpacked the 3 subs and all the speakers, placing them around the room wherever they would fit. unpacked the Onkyo receiver and connected everything along with a 20" monitor. Everything looked good and worked fine, no issues at all
Big relief after the move.
Now the fun.
I decided to be an idiot with the wife gone for the day, so I hooked up the front three speakers and placed them in their approximate spot in the room. I made sure each sub amp had its own 20a line, and got out the mini dsp for some LMS-U protection. I put each LMS-U sub in a corner, and plopped a pillow on the dual opposed box and had a seat. Using my laptop I did some very quick and dirty eq, and watched some of my favorite scenes with ULF while pushing the volume up as high as I could tolerate. I almost
got the clone to flash its clip light on some music, but couldn't quite do it - I was using ear plugs at this point. It wasn't even so much the volume of the sound that stopped me, as I was running the subs waaay hot, but the sheer pressure and physicality of it - especially anything ULF. Bass I love you was crazy. WotW was insane, FOTP too... F'n Irene was a blast. A scene from the Amazing Spiderman was almost nauseating, as it was only ULF
After that I was done, unhooked everything and started moving it out into the temporary space. I had forgot to get a pic before I moved out the subs
and I wasn't about to move them back...
Forgot to mention, this ridiculous small room is 7' x 9.5' with a 7.5' ceiling... so 499cf. Using the ULF calculator I get less than 88. That doesn't account for the room being overstuffed with speakers, boxes, amps, and of course 14cf+ of subs. It was good times for sure.
Summary relevant to this thread -
2 x LMS-U 18's FP14K clone
2 x LMS-R 15"s dual opposed inuke 6000DSP
My current score @10Hz - 263
Prospective score in larger room @10Hz - 561
Stupid score in stupid room @10Hz - 88
please don't put this one in your list dominguez1, as it only lasted a couple of hours