Could you expand on this last bit about the windowing?
Is that overall max boost or individual max boost?
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Daverz,
I set them both to 3 to allow for a small cut if needed in the bass region. I have never seen a boost proposed by EQ with these settings, so it is pretty much equivalent to entering 0 for both of them as you indicated. Individual is what is allowed as max boost for a single filter, Max is the total boost allowed for the entire set. o, I am pretty much allowing for just one filter up to 3 db.
I use the Frequency dependent window with 6 cycles which is really the equivalent of applying a smoothing to the sweep equivalent of the same octave (1/6). The window excludes progressively more of the arriving sound as frequency increase rather than just averaging out similarly to what our ears function. I am OK with one measurement because I am only adjusting for bass response. I do not touch frequencies higher than that. My crossover region is 250 Hz as I am bi-amping my Magnepn 3.6R with 2 triple 12" open baffle sub stacks driven by Rythmik plates. I am applying correction which is processed only by the sub amps. My mono Bryston amps driving the main speakers see a pure signal.
I of course, have matched the phase, minimize delay, and aligned the subs to the main speakers as the subs operate partly in directional frequency range (above 130Hz).
One additional tool I am beginning to master is the spectrogram wavelet for peak energy. Check your frequency sweep for peak energy discontinuities and import the wav filter after you generate to see how it is trying to fix any issues you may have for peak energy.
The picture below is my rig. I set up a diffusive front wall, and (the picture does not show it, I have some absorbent panels on side of walls, but also have the back wall totally absorbent with a total of 20 panels deployed). Room size is 35'Lx19'W,9'H.
The room does not look very professional, but I do not care because it is my room dedicated to the rig. As an extra bonus, it matches the voicing set up of the manufacturer, Magnepan, which uses a room, same construction as mine (porous cinder blocks)!
Qmuse, a very helpful member on this forum, has reminded us that you do not have to use rephase to create wav files for Brutefir.
Once you have the filters done in REW, go to the main menu, file, export, export, export filter impulse response as Wav,mono, 24bit PCM, normalize samples to peak values, 44.1 khz.