Bill Epstein Messages: 1088 Registered: May 2009 Location: Smoky Mts. USA
Illuminati (2nd Degree)
The 4648s a lot of us got during the tent Sale had 2226Js, 16 ohm drivers, and I suspect that's what you'll find. If so, it's a good thing; the combined 8 ohm load is more benign to an amp, especially a tube amp.
I played around a bit with the old 4Pi crossover and 2 -2226Js back then. The resulting bass seemed way more solid than the 3dB arithmetic boost would indicate.
You say you got 3- 4648As. Well then, use 2 as is for subwoofer duty and take the woofers from the third to build conventional 4Pis. Then play the opening of Lord Of The Rings, the battle at the Black gate. better yet, cut 22 and on of the Boston Concert side of the Police Live SACD. Turn it ALL the way up.