Quote Originally Posted by Flodstroem View Post
How about to use a 2123: 3" coil and make it an overhung midrange? Its 0.420" long, 5.2 ohm minimum and a DCR of approx 4 ohm. But have no idea what X-max then would be
It seems like Speakerexchange uses the same .400" coil for their 2123H aftermarket kit as they use in their kit for the 2122H, and there are no coil especially for the 2123H in the MWA catalog either.

JBL claims +/- 2,5mm Xmax for the 2123 but the overhang are 1,8mm so I guess JBL`s number are calculated with a certain percentage (10%?) drop in BL