Off the top of my head I believe the 604e,f,g were the classic ones.
Altec 605's or ?
I bought today what I think is a pair of Altec 605 speakers. However, I'm having trouble finding information on the web on how to distinguish between 604's, and at least a couple of different 605 models. Were different models put in a variety of cabinets? Thanks very much if you can point me at any information. I'll add pictures if I can figure out how to do it.