Full-range, room-filling sound and precise imaging. These are the true audiophiles bookshelf loudspeaker of choice. Featuring unique technologies such as our balanced double surround system, linear response waveguide, and laterally offset tweeter assembly, the D11 large bookshelf speakers deliver remarkably smooth, detailed top-shelf audio for true audiophiles. The D11 couples a laterally offset 1 aluminum dome tweeter with our 20/20 wave alignment lens. We offset the tweeters by 5, minimizing wave cancellations off the front baffle to deliver a more precise center stereo image and ensure clear, detailed high-frequency performance. The D11s 6.5" patented balanced double surround system (BDSS) woofer provides greater excursion and output for superior midrange detail and punchier bass compared with other drivers of similar size. The D11 produces superior low-end extension with an integrated 6 x 10 passive bass radiator. Plus, the addition of a larger spider to the radiator reduces rocking and delivers cleaner, tighter bass response.