Thanks for the current input. This is for a high resolution system. The active eq is only for the bass (it's bi-amped, so any added noise is limited to the bottom end only). I'm currently using a McIntosh EQ, but may upgrade to a TACT. Accuphase is a little too expensive right now. But I really want to optimize what I have now before I upgrade.
Frequency Spectrum Analyzer Software
I believe I've read about a few software packages for frequency spectrum analysis. I'm interested in this to tune the room as best as possible and to equalize the bass (not something I really want to do, but I think it is necessary). Although I can use a pressure meter and one of the stereophile CD's, I would prefer a spectrum analyzer that looks at all frequencies at once (for wave addition or nulls). What software is out there? Has anyone used it and with what results? Where can it be purchased? How important is a good quality microphone with this type of software? Also, my room is not rectangular so the programs that evaluate wave addition and nulls will not work for me.