"Not really interested in a current ohm because they don't use a true Walsh driver. "
Not exactly.
The main driver does operate "walsh style" with wave bending a part of that but only up to 7khz, which covers most of what one hears in music, save the highest frequencies, which contribute to things like "air", etc.
Specs on the Fs indicate that original walsh driver goes to 16khz, not quite full range by modern standards, but practically all anyone with older ears will ever hear.
I think Dale Harder's newer drivers may go up well beyond 16Khz as I recall but not certain.
Original Fs, newer OHM Walsh, Dale's Walsh drivers are three different beasts, with Dales and originals being most similar.
One might choose any of these three for similar but clearly not the same reasons.
Not exactly.
The main driver does operate "walsh style" with wave bending a part of that but only up to 7khz, which covers most of what one hears in music, save the highest frequencies, which contribute to things like "air", etc.
Specs on the Fs indicate that original walsh driver goes to 16khz, not quite full range by modern standards, but practically all anyone with older ears will ever hear.
I think Dale Harder's newer drivers may go up well beyond 16Khz as I recall but not certain.
Original Fs, newer OHM Walsh, Dale's Walsh drivers are three different beasts, with Dales and originals being most similar.
One might choose any of these three for similar but clearly not the same reasons.