I have picked up a pair of Klipsh speakers at the local goodwill I am trying to id. The numbers stamped on rear at top are 52 s 433, 52 s 439 on the side at top there is the letters L BB S on one and L OD L on the other they are three way speakers the high and mid range are horns the wofer looks to be approx 8 inch.I know little about Klipsch but know I have a pair I would like to know more about. Thanks in advance for any help anyone here can give.