Weird. I have two MP40w's on a small tank running near 100% in ReefCrest mode, anti-sync'd, and I can't hear them unless I am right next to one of them. Tank is also in my bedroom about 8' from my bed.Hyolee":34msv3k9 said:I like everything about the vortech better except for the noise. For inwalls they are excellent but for standard living room installs they are much too noisy IMO.