I use a Pioneer vsx-94txh and the fronts are set to small...

After posting on this tread, I play with my sub position and I think I found a spot where it is better... But I found something strange…

For a test purpose, I re-plug my old Polk speakers and surprise... The sound of my subwoofer remains the same (a bit of distortion or boomy)... I was shock!!!

So I came to the conclusion that the sound on my subwoofer has always be the same (a bit of distortion or boomy)!

I think my new M80 sounds are so clear and great that lead me to notice my poor subwoofer sound for the first time... It is possible because before my M80 purchase I never took the time to listen to the sound of my system with attention like that…

I continue my test...

Thanks for your help,

Eric