Posted by Wayne Parham on July 18, 2003 at 23:52:01

In Reply to: 2 Pi Tower XOver posted by JohnB on July 18, 2003 at 16:38:28:

Eminence changed the Alpha 10 and the specifications are a little bit different. You can distinguish the new part from the old by the color of the magnet label - The new speaker has a foil label.

Anyway, a 0.5mH coil was added in series with the midwoofer, which brings down the presence above 1kHz just a little bit. You can certainly add it to the older speakers - The difference is very slight but noticable. But the coil is really only intended to be used with the newer midwoofers, and I compared them with and without the coil in the post called "Coils on one π's and two π's."

This is the only circuit difference in the old and the new models - The addition of 0.5mH coil in series with the midwoofer. You can get a 0.5mH coil from Parts Express, part number 260-723.