Quote Originally Posted by Maril555 View Post
Thank you.
are you aware by any chance of a series x-over used in the same application?
Sorry No.

( FWIW ), Altec never used any series type crossovers in their larger format speaker systems ( a quick check of this sites Altec library publications reveals that Altec's crossovers from at least as far back as 1943, are all Parallel types ).

OTOH, checking the same LHF library shows that Lansing Manufacturing ( in the late 1930's before they were acquired by Altec ) did in fact use some Series type crossovers ( though I don't think I've ever seen a schematic for any of those ).

LHF "Lansing" LIBRARY