I've been comenting on these woofers #1 and #2 in this thread: http://www.classicspeakerpages.net/dc/dcbo..._id=&page=#7030 but I though I'd discuss the measurements here in this new thread. I mentioned this background in the other thread but please note the correction that woofer #2 is a replacement unit. Here's a picture: http://members.aol.com/basconsultants/AR11WMAG.jpg I've got a pair of AR 11/12" woofers out of AR-11s from the late 70s, both part #200003 (MADE IN U.S.A.) without an