Quick story for ya from a local chain store. A salesman says " Under powering speakers will destroy them" " Manufacturers are very specific in the way they rate there products so that you can match them perfectly " Same guy same conversation " When you purchase brand new subs you should break them in for a couple weeks at lower power " Irony at it's finest ain't it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifThere is no need to break in your subwoofer.
Plug them in and play them like you normally would. They will break in themselves over time with regular, normal use. No need to turn down the gains on your amp for the first [insert time period here]. Set the gain correctly once and then leave it alone. No need to keep the volume low for the first [insert time period here]. Just play them like you normally would.