A friend of mine bought a pair of Model 9's (I think that is what they were called) in the 80's and another friend of mine bought a pair of original design 6in two-way's that are still truly unbelievable. (Probably from the 70's and the SOB will not sell them to me!) Another friend had a pair that were multi-component that I think were called the Model 5; need some further reference on those.
Someone mentioned a pair of 3.8D's that were the precursor to the E's and a bit larger. If they are the speaker I saw at Julian's shop on many, many occasions, they have a mid-range driver with a protruding center from the cone. They are a hoss and definitely need some solid juice.
I compared my Basic 8's to a similarily configured pair of 8in two-way Sonus Faber and I believe the Fuselier's are a better speaker; transparency, less coloration, better imaging, broader stage, effortless bass.
The 3.8E's I have might be the last and the pinnacle of the Fuselier line. Absolutely clear, accurate, transparent, full, SICK GOOD and I have heard a lot of $$$ speakers - Thiel, Vandersteens, and many, many high-end sets. (My B&W's provide adequate sound for my garage.)
I was listening to a live studio recording on my 3.8's and heard what sounded like a slight crackle as if one of the drivers was giving way. OMG, a blown speaker! I took the recording and played it on my Basic 8's and there was a blown speaker - in the freaking recording studio! That's how accurate and revealing they are.
The Fuselier's are all hand built and luckily, Benny at Modular Electronics can provide service for them. Enjoy!!!