My '66 Ampeg B-15N has a Jensen EM15 speaker that sounds wonderful. It is a ceramic magnet 15" and that is all I know. I'm assuming it is similar to a C15N. Anyways, I'm wondering what may be a similar sounding 12" to use in my Deluxe Reverb. I was going to use an EV, but the weight has made me change my mine. Suggestions? Thanks!