cracked the cone on it, wtf...my L7's were tuned to 43...i'd wang out a 30 hz test tone once in a while...they'd bottm out...i never learned //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif i beat those L7's to death though, around 3000 watts to each...and i NEVER had a cone crack on any of mine. i tore a spider to shreds but never a cracked cone...