Mike said:
I am using a Rane 1/3 octave equalizer and a Rane spectrum analyzer. I

place the microphone at my ear level listening position and pointing
straight up. I find that after equalizing, the sound is much too
bright. It was suggested that I should set up a downward slope of .9
to
1.0 dB/octave starting at 2 khz (after eq adjustments). This would
result in a drop of about 3 dB at 16K. Also, Rane recommends using
mostly minus adjustments on the equalizer. I found these suggestions
to
be very helpful. I also found that measuring bass response was not
useful at all. I have no idea why that is, but I use a considerable
boost at 40 and 50 and cuts at 80 and 100 to get smooth response. This

is using several sub woofers.
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Certainly cutting is better than boosting especially if the boost is
more than the driver can handle.
I once heard 8 dB suggested as the limit for boost on woofers,
fortunately in my room, the woofer seems to only need some cut at 50
Hz.

How many subwoofers are you using?
Are you speaking of multiple drivers or of actual subs in cabinets?