Hello,
For a part of these documents, I found them different on forum from the web.For a second part of these documents i'ts ACR Geneva.For a third part, i have this material.Personally i utilize four L475 woofer, D506 phenolic, D276 phenolic, t825tweeter, horn H220, H320,passive 6db/oct. xover with a small SE el34 tube amp.and sound fine.All the material is in outstanding condition.The problem with this material, i'ts impossible to find spare parts, because Fostex uses particular diameter voice coil,25mm.,40mm.,50mm.,100mm., maybe in in Japan,i dont speak japanese.Maybe Mr. Michael Gillespi can provide technical documents because in epoch, Japanese were rather miserly in information.
Best Regards.
Stefano