I picked up a pair of Beta Signatures with The Subwoofer about a year ago and was able to obtain new drivers for the Betas through Fried/IMF. About $75 each if I remember correctly. I haven't had a lot of opportunity to listen to them and they are really under utilized. Too many speakers! Infinity Reference Standard II, Polk RTi12, Infinity IL40, IL10, Epicure 10, Magnavox OLDIES, Mach IIs, ...