LOWERED TO $550 Hate to get rid of such a great cabinet, but am in need of $$. This is the "acoustic friendly" 4 ohm version, and was delivered to me in person by its designer, Duke Lejeune, and it is in great shape. These are a great cabinet for upright bass, very transparent and acoustic sounding. It also sounds great with my slab basses. You can find out more of the specs at his web site: Thunderchild 112 and here: AudioKinesis Thunderchild 112 cab Will ship at buyers expense.