The only way you can get everything you want in a speaker is to do it yourself. While that was impossible for me to do alone, I discovered a crossover design engineer who could help me. He was about as eccentric as anyone I have ever encountered.
Since I’m a do it yourself technician, I was shopping at a speaker store that sold high quality wire of all compositions, and any kind of drivers that you wanted. Me and the owner had become quite well acquainted, and I told him about my new project. That’s when he told me about his new engineer that he would introduce me to if he was in. (if he’s your engineer, why don’t you know whether or not he’s in)?
This is where things really got interesting. The owner took me to the room where the engineer was working; it was a darkened room where the engineer was peering into a computer screen that had two solid colored, red and green, geometric figures with numbers on them that he was moving around on a screen. (how can you have pictures of a solid cone and sphere on a flat screen?)
After I was introduced, he said "Hi", just barely turning around, and went back to moving his figures with the numbers on them around the screen.
That’s when I realized he wasn’t the talkative kind, and I went to blabbing about what I wanted. I had read every thing I could find about "crossovers" in the library, In "Audio" magazine, in "Stereo Review", in the UK magazines, and in "Stereophile".
I went on and on while I assumed he was listening, but he didn’t give much indication that he was. I told him Theil was the closest speaker I had auditioned that I could use as an example, but I wanted to also incorporate an AMT driver. That’s when he responded (at last I knew he had listened)
"That’s not going to be easy. You say you want a 3 way with a 12 inch woofer and a 6 inch midrange with a AMT tweeter. Come back in two weeks".
The owner said, "I think he likes you", when I left. How he could tell, I don’t know; maybe it was because I had communicated that I knew something about crossovers.
After two weeks, he showed me his drawing on paper. The owner told me he would have the crossover together in two or three weeks. When I returned, there it was; 3 separate crossovers; one for the tweeter, one for the midrange, and one for the woofer; a total of 6 crossovers, one for each driver in two speakers.
This is the way it went; They gave me the parts, and it was up to me to put them together; but I knew his crossover would be magic.
After I built a cabinet, put it all together and listened; I went back and told the engineer about something I thought should be changed. He told me he would crack my knuckles if I changed anything, and he wasn’t smiling. If his convictions were that strong, I wasn’t about to change anything.
That was sometime in 1990, and since then, I have switched to the highest quality parts, plus I don’t know how many modifications to the cabinet; but I have not changed one single value of any part, and I couldn’t be happier.