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Polk LSi M703 Bookshelf Speakers (Pair) Experience flagship-level audio performance with the Polk LSi M703 Bookshelf Speakers. Designed to deliver a wide, deep, and dynamic soundstage, these speakers combine advanced technology and premium materials for exceptional sound clarity and bass response in a compact, flexible format. Key Features 6 1/2-inch mid-woofer and 3 1/4-inch midrange drivers made from lightweight super cell aerated polypropylene for efficient, distortion-free sound Polk’s patented PowerPort® bass venting system for enhanced deep bass with reduced turbulence and distortion 1-inch proprietary ring radiator tweeter for precise, detailed imaging and extended high-frequency response Dynamic Sonic Engine design with separate interior chambers for improved transient response and superior imaging Overhung voice coil design increases excursion length and power handling for enhanced bass performance Extended Linear Motion voice coil design eliminates impedance and extends mid- and high-frequency response Lightweight, rigid cast aluminium baskets ensure precision motor alignment and ample venting Klippel motor optimisation using laser measurement technology for uniform performance across volume levels Patented Dynamic Balance® technology reduces distortion-causing resonances for clear, natural sound Durable, injection-moulded butyl rubber surrounds suppress unwanted cone resonances for long-lasting reliability High-quality MDF enclosure with substantial internal bracing and separate cabinetry for each driver to eliminate cabinet resonances Furniture-grade hardwood veneer finishes with sleek trim accents and no visible screws for a premium look Super-thin zero-diffraction magnetic grilles that do not obstruct sound Dual gold-plated 5-way binding posts support bi-amp or bi-wire connections for customised high-performance audio All Polk speakers are timbre-matched within their series for seamless multi-channel system integration Built to last with rigorous quality testing including drop tests, extreme signal response, UV and salt exposure Specifications Mid-woofer size: 6 1/2 inches Midrange driver size: 3 1/4 inches Tweeter: 1-inch ring radiator Enclosure: 1.0" MDF sides, 3/4" MDF back and bottom, 1 1/4" baffles Binding posts: Dual gold-plated 5-way