My BK monolith does what it says on the tin! The gemini sub is pretty much the same as the mj pro 50 only cheaper! BK have had a hand in developing and munufacturing MJ acustic subs! But as they cut out the middle man there better value!
Nearly three years later, and here is another reply... I sold my MJ Acoustics Reference 1 MKII and bought two Gemini 2s, these have 10" transducers. They do not quite plumb the depths as the MJ did but with two they go as loud, also are faster and much more articulate.
Room loading with two Gemini 2s is excellent, far superior to one much larger subwoofer. No regrets at all and I even made a few quid to boot. Surely these tiny BK crackers must be the bargain of the century! I am one happy bunny... Thank you for the **** review and thank you BK!