Hi:

New user got interested in vintage JBL 12"s, and picked up a minty set of 123As and a set of 122As needing foam.

Right now I'm working on a design with the 123A woofer and a 3" midtweet, series first order XO at 500 specs out really nicely (well damped Fs for the mid/tweet due to series XO), and should be a good balance between divers. The 123A having the powerful motor and low Fs but higher Qts makes it well suited to a modest size Open Baffle, a use not widely explored with JBL drivers. The huge Vas of these monster AlNiCo motors (the 122A is even more powerful with a lower Fs but too damped for this purpose).

Anyway, hello all!