Mahogany bookshelf speaker delivers a wide, deep, dynamic soundstage. With addition of the proprietary 1-inch ring radiator tweeter adds pinpoint detail for realistic imaging. You’ll be delightfully surprised to hear the kind of performance that befits our flagship loudspeaker line. With a 6 1/2-inch mid-woofer, 3 1/4-inch midrange, both of lightweight super cell aerated polypropylene, combined with the enhanced deep musical bass response of Polk's patented PowerPort bass venting system. The with the performance of the groundbreaking LSiM Series in a smaller, flexible bookshelf speaker format, the LSiM703 gives the best of all worlds.