With a price tag nearly as big as the sound they produce, the 7-foot tall McIntosh XRT2.1K loudspeakers deliver sound-studio quality audio through 81 separate drivers: six 8-inch nanocarbon/Nomex long throw woofers, two 6.5-inch low frequency nanocarbon/Nomex midrange drivers, 28 2-inch upper frequency aluminum/magnesium midrange dome drivers and 45 0.75-inch dome tweeters. Crank that array up and you’ll have the whole neighborhood rocking.