I'm still not quite picking up what your putting down, Josh
bear with me! I appreciate your patience...
The scenario I refer to is this.
When I play a receiver LFE test tone on the Epik Empire and match to 85dB I'll get the peaked natural response that the Epik possesses. (LFE test tone = white noise putting out all frequencies) -- The Epik empire will be playing 70hz and up louder than 20hz in the mixed test tone signal sans any external EQ. Thus my 85dB level will be obtained with 70hz and up frequencies rather than full spectrum frequencies.
Thus when level matched the Epik won't seem to hit as deep.
Moving on ---
When I apply external EQ and am forced to take 5db off 40 hz, 10dB of 50hz, 15dB off 60hz, 20dB of 70hz and so on (for example) to make a flat EQ ---- isn't that process lowering my (EQ limited) max spl at 70hz? by 20dB --- assuming I don't touch the gain attenuation after EQ. I understand the headroom is still there, but I don't plan to use it because I desire a flat frequency response.
I now have a flat frequency response...
Yet the overall volume is no longer 85dB, so I must raise it.
BUT i can't raise the flat frequency response indefinitely -- I'm still limited by the worst portion of the subs ability to reproduce (ASSUMING I want to keep flat frequency response (which in this case is 102dB at 20hz. according to the data-bass tests))
I posted my reply before I saw Mark's comment and just read mark's comment. Mark your post I do understand, but it seems oriented to music where most often frequencies don't fall below 30hz.
So is this your input?
In the 2011 subwoofer meet results I posted where subjectively, collectively, the Epik Empire was rated poorly for depth of notes on music --- that observation was simply a lack of EQ issue. (we didn't apply EQ at that meet). I agree with that.
If proper EQ was applied to make the Epik Empire flat. You are of the mind that generally/potentially the Epik would still sound better than the SVS PB12-NSD type response because it would not be at the limits of the subwoofer system for 90% off the frequency response spectrum, (say above 30hz) where the SVS potentially would be bumping the limits for most of the spectrum since it has a relatively more flat FR out of the box.Edited by Archaea - 8/22/12 at 2:33pm