After running Auto MCACC (Pioneer AV receiver's speaker auto-tuning feature) I no longer hear my subwoofer when playing music (HDMI cable from my laptop to HDMI 3)and I barely hear a whisper from it when playing HD cable TV (for example NHL hockey games in Dolby Digital surround). I have fairly large fronts (Polk M70) and a fairly small sub (Polk PSW111 8" sub). Sub crossover is set to 80.
Could MCACC have decided that my sub doesn't contribute enough and eliminated it from music? I don't hear anything no matter how loud my music is or even if the sub is turned up all the way. I'm not 100% sure that the sub sound went away right when I ran Auto MCACC, but the events seem to have coincided with one another...
The sub literally makes NO sound when I play music, no matter what sound mode I use (Stereo, Dolby Surround Music, Neural THX, etc). It did make a lot of sound before I ran MCACC. (I ran Auto MCACC when the VSX-9040 was set to HDMI 2, which is my ComcastHD cable).
I have a 5.1 setup, with speakers wired to FR, Center, FL, SR, and SL (no rears) and an LFE cable from Subwoofer Preamp output to the sub.