Jim,
So in terms of drivers that are currently available, you would recommend the ScanSpeak P17WJOO and the Hiquphon OW2-92FS? And perhaps the series crossover shown as “C-6” on your pdf file? I realize the attenuation network might need to be tweaked but it would appear this crossover should be ok otherwise. Do you agree?
I have an old Fried C brochure that makes a big deal about the rounded edges of the front baffle. Yet the later C models seem to have gone back to right-angle edges. Is that correct?
The C models are all rounded.
I used a sander to round mine off a bit.
The first C3L crossover would be a better choice for the P17WJOO having a 2 ohm Re in series with Hiquphon tweeters with a 18 gauge .5mh air core inductor.
All that would be needed to change is the zobel and possibly the Re value in series with the tweeter if the 2 ohms wasn't flat.
Fried tried to eliminate any resistor in series with the Hiquphon tweeter.
The later crossover used a 30 ohm Re in parallel of the tweeter but he went back to the earlier design I was told.
You might recognize Trelja from Audiogon.
i have never met him but he thinks the Silver Flute driver might be better then the P17WJOO.
The Silver Flute is a paper wool composite cone.
The C6 and O6 Gefco composite cones have a very low voice coil inductance.
Fried used these with his MARS ambience recovery circuit.
Each speaker had the 6.5" and 10" drivers playing both channels.
One voice coil played the left channel and the other voice coil played the right channel in each speaker.
I am not sure why he abandoned the use of the MARS circuit.
i have enclosed the Studio V brochure,
These use the Gefco 6.5" and 8" drivers with the Hiquphon tweeters on a flat baffle.
72047
After Fried discontinued the Mars circuit each 6.5" and 10" driver had both 10 ohm voice coils wired in parallel.
This lowered the voice coil inductance in each driver.
Another thing Fried did he used the voice coil inductance of his 6.5" drivers as the inductor value in his series satellite crossovers.
The Gefco 6.5" have a voice coil inductance of .35mh when both voice coils are wired in parallel of each other.