Hi i own 4 m22s and an hk 525 and i recently bought an spl meter to calibrate my system. For some reason music sounds better in 2 channel stereo mode then it does with all 4 speakers playing. It seems as though its clearer with only 2 speakers playing. How can i fix this? Also, what exactly am i supposed to calibrate other then the volume levels of each speaker? I dont really need an SPL meter for that since my ears can tell which speaker is loudest. finally, on my hk 525 when using test tones the volume on each speaker is relatively the same. but when playing music the rear m22s are not as loud as the front m22s. whats up with this?