I always favored the LE175 to the LE85/2420 because of its "warmer" sound. But at one time I came across a pair of 2420s with tangential diaphragms. These had much of the warmth of the LE175, but a bit more extended at the top end and these became my L/R replacing the LE175s.
But my center channel has a 2420 with an aluminum diamond surround (typical). I came across a single, reported original, unused, 2410 tangential diaphragm and am wondering if this would be identical to the tangential diaphragms in the 2420s. I guess I'm asking if the 2410 and 2420 used the same tangential diaphragm back in the day or if the 2420 had a slightly different piece in there, like they did in the ring tweeters?
One for the old timers.
Thanks