Simply badass, I pulled four black back celestions out of a 70's Marshall 4 12", and loaded the Man'O'War's. These Eminence speakers just floored me, the celestions went in the Eminence boxes where they'll stay. Now, the Man'O'War's have an amazing bottom end, and the top is on FIRE! I used a Roccaforte Custom 40, and a Masterlead(100watt) for testing. Using the master volume on both amps was a perfect match for these speakers. The overdrive was the most organic I've heard yet coming from master volume amplifiers. Clean, these speakers produce a clearer tone and less compression over the Govenor's which I happen to love. Bottom line, I think the Man'O'War is "it" for a 4 12".