Regarding room equalization with a graphic equalizer, what consensus, if any
is there for placement of the microphone or SPL meter?

I had always thought that the best place was at ear level at the listeners
position, but is that best or should some averaging be done from multiple
locations.

I note the THX guidelines for using a home theatre equalizer says that EQ
for one position can result in poor performance at other points in the
listening area, but that calibration done with an SPL meter may be done from
a single reference position using the internal test signals from a home THX
controller. These are bandwidth limited signals they say minimize room mode
effects. Are we talking about pink noise signals or something else?

I'm not concerned with THX but rather using a 1/3 octave EQ to flatten out
the room response. I've done as much as I can with the room want the EQ to
smooth out the rest of the response from the speakers.

I've heard EQ'd room before using equalizers, pink noise test tones and an
SPL meter that sounded very good from both analog and digital devices,
although I believe the general preference is for digital.

I recall Dick Pierce commenting some time ago about what I recall was his
disdain for active EQ because there are never as many bands on the gear as
there are in the audible frequency spectrum, is that still your view Mr.
Pierce or am I misremembering?

Any constructive information gratefully requested.
Any other suggestions other than RANE's products?