Originally Posted by basshead81
The problem with data-bass is most of the so called enthusiasts that would even use it still don't know how to interpret the data sets. So all it ends being used for is slinging mud in various threads to support X members brand. Honestly that is probably one of the biggest reasons why companies have not been sending subs out as of late for testing. Tom made a perfect example with the Reaction Audio stuff. Great max burst numbers because it was a driver stuffed in a box with no DSP or signal shaping applied to the response. Sure that will get you that 50hz car audio level bass but it's not nothing I want in my living room.
Data-bass is a great source of information but the data has to be properly understood to have any true meaning. Simply going down the spread sheet and comparing X sub to y sub at 20hz max burst doesn't really mean much in the grand scheme of things
The current discussion in a different thread is a PERFECT example of the above. Total confusion over one of the simpler "connect the dots" process. Remember the Pirate Radio charades game? The one dude is like "it's like watching a baby drown!"
Here, (rant mode on---not directed at anyone here)
1) DEFINE "TR". I don't mean "well, something rattled". I mean DEFINE it in a sense that gives all of us a reference point we can use in these discussions.
2) Consider all of the variables that can factor in. There are dozens. Here's an easy one---could Hop's room construction lead to a boost in TR from a given DUT that would not occur in a different room with different construction/placement/etc? If you say "yes" then start the process to first identify it, and then attempt to minimize it as a variable. If you said "no" go away...just go away..
3) Cea-2010 burst with have next to NOTHING in common with a bassy scene. Even IF ALL of the above variables were zero-d out...it's still a WASTE OF TIME to try to correlate a 10hz burst with what a movie is going to demand from the DUT. I must have explained this DOZENS of times and spent 100(?) hours trying to detail it over the past 3-4-5 years. And yet, here we are.
See attached. (again, not my content just found it on the interweb one day) It perfectly illustrates things.
So, as an example, if we have one sub that has a 3dB advantage at 10hz with the tiny narrow band cea-2010 burst(sigh) but the OTHER sub has 9dB more headroom 30-100hz...why it is so confusing that with almost EVERY MOVIE SCENE which extends to 10hz that there will be SIGNIFICANT 30-100hz content. Much more content than 10hz in fact. One sub is just coasting with all that using 1/8th(!!!) the power the other sub needed.
Given the above, is it THAT difficult to consider the sub that measured 3dB lower in the burst is now at LEAST as capable as the other sub at 10hz with a movie simply because it's coasting over the majority of the bandwidth while the other sub is pushed right to its limits(needing 8X! the amp power to product the same spl).
So many variables, and even the very fundamental idea of dramatically different input signal is ignored.
But yeah, I'm in a HUGE rush to add more of my products to this complete cluster of misinterpretation and cherry picking nearly irrelevant "scores". Just like you said basshead. It's all about finding anything to toss mud at the next brand.