This is the crossover of the 1970's, the circular objects are the inductors, five of them, the other parts are resistors and capacitors. These are not the only inductors i have seen like this. And the only thing I can think of is that most of them are just copycats of the orignal 1970's version.

Good day folks. This is my favorite month of the decade, but you need not be concerned about that. I was hoping to show you some crossover technology from the 1970's but I seem to have lost that file. Anyway it was a 5 way speaker that had been crossed over at a 6db/oct rate and toned down with a bunch of resistors. The pair sounded fantastic but I now wonder exactly how much they knew and how much was experimental and just sounded right. Because the dimensions of the inductors are completely different from the ones I am about to receive. Which makes me excited about what this 4 way system could sound like. Previously I had showed you a picture of what I thought would be a close version of a tweeter inductor, and the difference it made. Well that difference was at extremely hi volume where one ear was piercing and the other was not, at low volume you really could not tell much of a difference at all. These new inductors could produce off the charts at all volumes. Primarily because the people making inductors today have never done this before, it is new to them and they had to start from scratch, a rather enormous task especially for anyone not really knowing what they are doing, like possibly back in the 1970's or your average joe who is just winding up an inductor on his lath. Your ability to measure the inductance is only as good as your equipment. So we patiently wait for our precious inductors to be delivered knowing they should be far superior to anything in the past.