Wayne Parham Messages: 18789 Registered: January 2001
Illuminati (33rd Degree)
Honestly, I think those are too cool to hack up. I'd update the capacitors - replacing any electrolytics with polypropylene - and maybe replace any iron core coils with air core coils. If the HF extension lacked sparkle, I might even swap the compression driver with a modern unit, but I'd definitely keep the old ones if they still worked, just in case I needed to take it back to original. And refinish or restore the cabinet, if needed. They really look good so I can't imagine it would take much, if anything.
Build some Pi speakers from scratch. Don't hack up those groovy old speakers. They're just too cool as they are.