Originally Posted by kryptonitewhite
How much does 8 MXs and the amps and wood cost, vs how many more THTs could be built for that
oh, below 20Hz... so most these guys doing all these THTs don't miss the sub20Hz in exchange for all that 20Hz on up with the excellent cost and efficiency?
Cost is irrelevant. It's nothing more than a compromise. That's a whole nuther discussion. I don't subscribe to the "everything has compromises" philosophy. I want 3-120 Hz (+/-3dB) with 120dB total dBSPL peak capability at the seats with no compression and inaudible non linear distortion. That's what the specification for the LFE+RB calls for, and has been in place for 18-1/2 years.
This measurement was taken with a rig that's ruler flat to 4 Hz with no calibration file. Every time I post it I get resistance from nearly everyone. One guy questions the method, one guy says it's the HVAC system, one guy says there was a freight train passing by when the measurement was taken, one guy says it's only system noise, one guy says I can't do that at higher levels, one guy says there's nothing to reproduce that low, one guy says ULF has to be 140dB because of the ELC and one guy calls me the FR Nazi who chases single digits.
If all that bah-loney is the devil's advocate, then my conclusion is that the devil's system bloze.
On the subject of efficiency, if the system delivers the goods with no compression, distortion or bandwidth limitation, then it's delivering efficiently. OTOH, it it's lopping off the first 3 octaves and adding tons of distortion, then how can it be said to be efficient?
What most like about the pro sound stuff is that it's loud. It's designed to be loud at the expense of bandwidth. When you go to a rock concert, what that means is that you aren't hearing any of the instruments as they actually sound. Every sound you hear is filtered at 30-40 Hz and loaded with harmonic distortion.
When you go to the theater to see (for example) WOTW, the lightning strikes are a complete non-event. That's because the same pro sound equipment they use at the rock concert is delivering the soundtrack in the cinema.
Once, when I returned home from a business trip, my wife had bought WOTW and it was sitting in the HT room. I popped it in and watched it at ref level.
I had no idea at the time that, while I was gone, there was a power outage from a storm and when the AV preamp was turned back on, all of the setup was reset to default '0' levels. My sub system was calibrated flat with the SW channel set at -9dB.
That meant, of course, that I was watching WOTW at reference level with the sub at +9dB hot.
The first heavy LFE scene in that movie is in chapter 4... the lightning strikes. It made me dive for the remote and hit 'mute'. I'd never experienced anything like it.
Point being, if I had a system that rolls off at 20Hz, I would not have panicked like I did. Ignorance is bliss. So, yeah, people who have never experienced full bandwidth LFE+RB with headroom don't miss it. How could they?
That was 5 years ago. Ever since then, when people say ULF is [insert whatever lame BS story about it being unnecessary, unintended and/or inaudible], I just roll my eyes.
A final thought on price, or bang for buck. I've been around forums since 2002. I watched the fads change from one sub to the next new thing. I now see lots of posts where some guy is validating the performance of a new bang for buck commercial sub by listing a dozen commercial subs he's bought and listened to and sold or gave away in the past 6 or more years.
"New & Improved" just means the old one sucked. And, each time you upgrade you take a hit on freight and depreciation.
So, how much did that guy save in the end? And, he still hasn't approached covering the SW channel, because "it costs too much"?
Just my 2 cents. This system stomps the other one and worth every penny.