sorry i meant 5 and a quarter. i just refer to them as 5.1s lol. do you work at best buy? if so pm me and ill give you the harmon kardon accomadations site and password so you can order all kinds of stuff. you need your employee number though or they will red flag it. i only paid 110 shipped to my door for the perfect. it arrives today....... oh and about the box. my friend built it for me and says it was rated or tuned for 50 hz. its a HUGE box and was meant for a type r 12 so im sure it will work fine.