With my home theater budget stretched tighter than the head on a snare drum, I've been trying every tweak I come across with the hopes of squeezing every ounce of sound out of my system. My system currently consists of a Sony DE835 receiver, Sony 530 dvd, Def Tech ProCinema 100 speaker set, VCR, Sony T60 Tivo, and a 32" RCA tv (which I consider to be the weakest link and first piece to be upgraded). I'm saving for the Toshiba 42h81, which my local BB finally got in stock. Anyway, I've been trying to make sense of the use of products such as the Rane and Beringer eq's, test tone cd's, my RS SPL, and such. I downloaded a couple of test tone generators and burned a cd with tones from 10-99hz in 1hz increments and a sweep from 20-20,000hz. I discovered that my sub bottoms out at about 24 or 25hz, with a fairly constant dB level down to about 32hz. But, I've known since first getting the sub that I've got some peaks in the 40-50hz range. At least that what my ears tell me. I've read just about every post concerning this topic, but need some step-by-step directions on properly calibrating everything. Also, who's got the best price on the Rane and Beringer units? I could use the chart showing the proper adjustments to make using the RS SPL. Also, could someone drop a link to one of the computer programs that helps with this process. Thanks in advance for any and all info. Kevin p.s. Can the eq on my receiver be of any real use? The sony's allow you to adjust the frequency at which you boost or lower the tone controls for the fronts, center and rears independently. Anyone using a sony and familiar with the eq?