KLH Computer controlled speaker info wanted


Hello
I have a pair of KLH 3 Vintage computer controlled speakers.
I found these at a Goodwill,with the computer that goes with them.
They have a very real like presence to the sound and good detail,very musical,First rate build too. The magnet on the 6.5 driver is as wide as the whole cone.

Anyone out there familiar with this line of speakers from KLH?
Please tell me what you know about them.
Thanks
mcgarick
Do you guys know to properly connect the computer to KLH 3
Using integrated amp.
Just signed on and have KLH 2 computer control speakers but without the Computer controller, does anyone have any info on where to find one. Thanks GMJ