OP, you and I have much in common. Thanks for your post!

I’ve somewhat been recreating my first stereo which included a Radio Shack integrated amp from approximately 1970. The Garrard turntable and Utah 12" triaxial drivers came from the Lafayette Catalog.

The"Speaker Design Booklet " came from Radio Shack. I built the largest pair of boxes I could lay out on a 4’ X 8’ sheet of plywood, my father’s charity hitting it’s limit at one sheet.

Didn’t have a clue what I was doing, but to me and my buds though they were great!

Reading this while munching my $13 Hardee’s medium Frisco Burger Combo… thinking vintage audio thoughts 🤔

Think they’re home brew, but I recognize the ElectroVoice T35 tweeters.