Just got my Tumult enclosure from Acoustic Visions... It is awesome... Looks great, even better than in photos. Some small shipping damage, the grill clips. It is a Sealed Cube, just like Kilimanjaro on http://www.acoustic-visions.com/pinnacleseries.htm , except mine is passive. I'm using a QSC RMX-1450 to power it. Wow... The output, even being sealed is significantly higher (and NO Port Noise, being sealed) than my VTF-3, the walls are resonating...BAD... The room is 12x17x9, but has one large and one small opening into another 450 sqft x 9.