Originally Posted by dukey donkey
The 12b's I'm looking at are16ohm.. the flax is 2.44 mm ... not great I suppose.
That is very poor for bass performance. The Delta 12LF has twice the xmax of the 12b. That translates to being able to handle something like 4 times the power and stay clean, or at least move twice as much air.
Everything is a balance of compromises though. Drivers that can make a lot of lowend often will either sound fairly bad through the uppermids/topend, or just not have much response up there at all, making a very "dark" sound. Lowend performance is what makes the bass loud, the tone and character of the sound is in the mids and highs.
+1 to the above post. I don't think going from 4 to 2.67 ohms will make any difference in real world output. That amp can even push a lot of power at 8ohms.
Faital does make some nice drivers in alternate impedances. With the 8ohm Eminences, your options for a 4-driver cab are stuck at 8 or 2 ohms.