For some of our CAT MBX clients, "bigger is always better". This $ half million (+) pair of CAT MBX 10.9S46 weighs in @ over a ton (each), stands 12 feet high, and often provides musical excellence to this 30,000 sq. ft. "Exotic Car" showroom in Caesar's Palace, Las Vegas! The massive weight, cost, and audio industry defining accuracy is largely due to the enormous amount of MBX 105 alloy material (no MDF) CAT MBX engineers used in the construction of these brilliant enclosures.