I admin I am a newbie at this.
I have a pair of altec 602d speakers. There is a N-3000-E still attached to the cabinet. The speakers are out of the cabinet.

How do I take off the N-3000-E off the cabinet. The knob is on outside and the control box on the other side. It looks like the knob would come off and then remove the nut on the outside of the cabinet. How do you take off the knob? There is a little screw in the knob that I removed but the knob did not come off.


Other questions if you have time
Do I need the N-3000-E or is there some modern day equivalent?
What is the N-3000-E used for?
Do you know where I can get a new cabinets for the speakers?
Are they worth keeping and putting in new cabinets. They were in working order and have rarely been used.

also misspelled altec in title. don't know how to fix
thanks