Thanks Peter, I'm OK with power response vs SPL, but where I struggle is with an idea of "net usable efficiency" for lack of a better term.
And I get that a box is still capable of producing max SPL based on the non-EQ response (much as a power amp can still produce max power even as gain is turned down).
But it seems the only way the max power could be realized in a freq range where I need to cut to flatten response, is most likely to have other frequency's running out of gas, particularly where there are non-EQ response dips.
So if I want to maintain level response throughout, don't I need flattening in place?
IOW, I don't get the value in response peaks in considering "efficiency"? Likewise, I also think "efficiency" should be knocked down for any EQ needed to bump up dips.....
Anyway, don't mean to belabor my own views...just trying to see if I'm making a mistake in my reasoning.
Just because it's so easy and I take so damn many measurements.....
I ran the SPL LEQ / average voltage test on both boxes on the floor this morning just using x-overs, no EQ. LR8 @100, LR8@650.
The PM90 measured +0.8 dB like this (vs +0.3 with EQ flattening)
I wonder if my new box could be getting any gain from behind the drivers....it's not really ported, it's more like a transmission line that gets progressively deeper from top to port. I dunno what to call it really...it's a effort of trial and error..built via lot's of measurements cause I haven't yet learned hornResp.....
Any thoughts? Thanks as always !
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