FWIW, the old pair of AR2x's I had ended up being parted out, I then cut the front baffles away, and use them as storage/worktable in my shed. perfect height for rebuilding a carb, etc:)

the old sprague "compulytic" crossover caps spec was 20uF and they now measure 22.6uF, not bad for 31 year old electrolytic caps, the air core coils(1.27mH) were decent enough to recycle to the parts box also...ar level controls SUCK, btw. and what the hell was up with using a pot that varies the Z seen by the xover cap as the level is changed?!? that way the xover point can VARY with the level setting, then there can be a GAP between where the woofer dies like hitting a brick wall at 1kHz. and wherever the tweeter decides to come on line:(

"sealed woofer fart boxes", what was the question again? Sam