VS4121 USER HERE !! .. JUST WAN 2 SHARE SOMETHING ABOUT THE SPEAKER !! The Bass of tis speaker really damn Kuat!! so i find a way to lower down the BoomY... n u all can take a try on it !! .. Just take a Fabric of something soft n solid !! just suck it into the subwoofer Hole ( But becarefuL OOoo. dun suck all in Oo if not later cannot take it out jor !! lolx ) so take a try for vs4121 user !! For me is Work well la !! ... gd luck !!