KLH Model Four - Anyone know anything about these?

Curious to know since you can't open the grills what speakers sizes are & Are they 3-way ? 4-way?
B6d90091 6576 45b1 8361 8285f7649faejingles
I had a pair years ago. I believe they were a two way
system with either a ten or twelve inch woofer and two
cone tweeters. I think they might have been a 16 ohm system.