Bill, You are a craftsman! Great looking build quality on your back loaded horns---I memory serves me the FRD I ordered is the FE206E---and a comment Dav Dicks is the only source for it as it was not listed at the fostec site---????? been reading a LOT of speaker design and have gotten to the point that i just have to BUILD --and then listen and then start all over again---and Dave said he thought this driver was tubby---I wonder what box they were in??? Jim