Hi all,\nI am not quite up to this, what is the difference of normal and reverse phase?\n\nThanks alot to your explanations\n\n\n\nADMIN Response:\n\nSubwoofer Phase Switch: Normal vs Reverse\n\nNormal: keeps the polarity (+\/-) of the Sub the same relative to the rest of your speakers.\nReverse: flips the polarity (-\/+) of the Sub relative to the rest of your speakers. This essentially puts the sub 180 degrees out of phase.\n\nSome subwoofers offer variable phase which is adjustable from 0 to 180 degrees. It's a good idea to experiment by having one person vary the phase while you listen at the primary listening position to see which setting sounds best with bass intense music. You can also use an SPL meter to see how it affects output with pink noise. It is usually recommended to use the setting that yields the highest pink noise output when the sub + main channels are playing together.