I'm trying to calibrate my sub using a Radioshack Analog SPL meter and the SoundAndVision setup disc. The problem is that when i match the level test tone coming from the sub w/ the test tone coming from the left front speaker like the disc says to, the bass is nearly non-existant. When i do the same type of calibration using the test tones from my receiver (Pioneer VSX-D811S), the Subwoofer is amazingly overpowering and all together too loud. Would it have something to do w/ my sub position (back wall, pointing at couch)? Is it just me being a teenager wanting everything to be bass heavy? That doesn't explain the volume being too loud when i calibrate using my receivers test tones. Any ideas? I have all speakers set to small and my crossover set at 100Hz (only other options are 150Hz and 200Hz). My sub is an RCA 12" 200watt Front Firing w/ 3" Downward Firing port setting on a 1" thick patio block. The Enclosure is around 70 liter (16" x 16" x 16", 28.444 Cu Ft). It sets along the back wall pointing toward the couch, about 6 feet from the listening position. My mains are Sony SS-MB300H on 19" stands, 41" total, 11ft from the listening position, 10ft apart. My center is a Sony SS-CN490, on top of RP HDTV 5ft from the ground, 11ft from the listening position. My R/L surrounds are Sony SS-MB100H at ear level 4ft from the listening position. My R/L back surrounds are SS-MB100H at ear level 2 ft behind the listening position.