Dave, believe it or not, i still have not resolved the problems with these speakers. After trying to get them straightened out and running into one problem after another, i set them off to the side. After sitting for a long period of time, i ended up sending the crossovers out to Jon Risch to examine. He told me that it might take him a while to examine, but he would get to them.
After looking them over several times, I received several emails from Jon stating that he could not believe how complex this crossover was. He stated that this was the most advanced and complex "series" crossover that he had ever seen in his life. Given that "series" type crossovers have just come into vogue in the last few years ( save for Bud Fried ), this should tell you something about this speaker that came out in 1978.
Jon was finally able to figure things out and sent the crossovers back along with a drawn out schematic. Since that time, it has sat due to another problem that i myself created. I ended up mixing the drivers up. Given that these speakers use multiple drivers that look identical but really aren't, it has once again become part of my "things to sort out when i get the time" projects.
Your post and tip may be just the information that i need to get these things put back together and out of here. I had never thought about contacting Koss of Canada. I had contacted Koss here in the USA and they were NO help. In fact, the technical assistance department didn't even know that they had made "full sized" speakers in the past. They surmised that someone else had purchased the rights to use the Koss name and marketed these speakers with their permission. As such, they were NO help whatsoever. In fact, i ended up faxing them info on the speakers for their records : )
I'll give Koss of CA a try. THANK YOU for taking the time to post this response, even though it might not pan out. It is worth a try and i really do appreciate it. Sean