An SPL meter is nice to have for seeing what sound levels that you're actually working with, but for simply calibrating speaker levels the built-in meter in the Yamaha and many other receivers does a fine job, so you might try that first, even as to the two sub calibration.
I hate to hijack this thread, but I'm receiving my second sub today , an EP500 to go along with my EP350. I don't have a SPL meter, but I do have EZset/EQ I can use on my HK 247.
My question is, how would I use that in a two sub calibration? Do I need to have both subs on and set to about 9 o'clock on both of the dials? Or does one need to be set a little more "hot" then the other before hitting the calibrate button?
