Description
LSI M704C - CENTER SPKR Details Here we have a Polk Audio center speaker that is in good condition. This unit was apart of my personal sound system and was removed from a working environment. There are a few marks through out the speaker cabinet but nothing major. Some of the spots where touched up by the original owner. There is one part on the left side of the speaker where it appears to be a small blemish. Note that most of the small imperfections are unnoticeable until you really look up close. The magnetic speaker grille is also in good condition, there are no snags, holes, tears. Please review the photos for a better representation. Shipping Alert If you live in Puerto Rico/Alaska/Hawaii. Please contact me before buying, a shipping quote will have to be provided. Thank you Product Description Tired of turning your system up to hear the dialog and down because the effects are too loud? Then put your money in a high performance center channel speaker like the LSiM704c. Big enough to stand up to the power of the floor standing LSiM705 or the LSiM703 bookshelf loudspeaker, you can use this center channel speaker to perfectly match the size and performance youre looking for. The LSiM704c has all the earmarks of a great center: crystalline detail, fast natural midrange and impactful bass. With its dynamic sonic engine, twin 5 1/4 inch woofers and a dual Power Port venting system, the LSiM704c will reveal the whisper, the shout and the thump thump of the helicopter flying over. From the Manufacturer Big enough to stand up to the power of the floorstanding LSiM705 or the LSiM703 bookshelf loudspeaker, you can use this center channel speaker to perfectly match the size and performance youre looking for. The LSiM704c has all the earmarks of a great center: crystalline detail, fast natural midrange and impactful bass. Key Features Polks exclusive dynamic sonic engine design optimizes the midrange driver and the ring radiator tweeter in separate interior chambers for improved transient response, superior imaging and greater horizontal off-axis response. Our innovative overhung voice coil design augments the excursion length for subwoofers, increasing their power-handling capabilities and enhancing bass response. Extended linear motion voice coil design allows lots of movement in a limited space, reducing impedance and extending mid- and high-frequency response. Lightweight, rigid cast aluminum baskets are designed for precision motor alignment with unobstructed linear movement and ample venting. Polks proprietary, patented Dynamic Balance® technology designs out distortion-causing driver and system resonances, so you only hear the good sounds. Super cell aerated polypropylene cone is the ideal balance of lightweight stiffness and superior damping properties. take a look inside this product technology Dynamic Sonic Engine This is a molded enclosure within the cabinet that houses the super-accurate ring radiator tweeter and the extended motion midrange driver in their own separate, tuned compartments. This aligned, optimized array contributes to wide, uniform dispersion in the critical 200Hz - 2kHz range. The dynamic sonic engine, in turn, lives in a separate, rigidly braced enclosure-within-the-enclosure. This separation and specialized tuning measurably reduces performance-robbing back wave reflections. The result is astonishing detail and realistic imaging, with improved transient response, exact timbre-matching, and greater horizontal off-axis response. Enhanced Ring Radiator Tweeter Our engineers took the ring radiator tweeter, usually seen in only the most exotic speakers, and found way to improve it. They reshaped the tweeters bullet-shaped phase plug to eliminate horn-loading and improve dispersion. Redesigning the tweeter faceplate and the diaphragm added efficiency. Finally, they gave their new ring radiator tweeter its own tuned enclosure within the dynamic sonic engine. This enhanced ring radiator boasts higher power handling, extended dynamic range, better dispersion and extended top-end response Klippel Optimized Dynamic Balance® Transducers All transducers are developed using our proprietary Dynamic Balance technology to reduce or eliminate unwanted material and interface resonance that color the sound. Klippel measurement systems are employed during development to ensure the speaker will deliver life-like highly detailed playback at both low and high volumes levels. Super Cell Aerated Polypropylene Cone Material The perfect cone material is lightweight (for faster, more efficient action) and stiff (for less distortion-causing flex), with enough internal damping to suppress and offset any limitations of its lightweight stiffness and our super cell aerated polypropylene cone material is about as perfect as it gets. Its the ideal balance of lightweight stiffness with high damping, along with good resistance to moisture, UV and temperature extremes. Our drivers are fast, linear and nearly resonance free. Why you should consider this product Slightly smaller than the flagship LSiM 706c, this high performance center channel speaker anchors the action in home theater systems based around the smaller LSiM floorstanding model (LSiM 705) or LSiM bookshelf model (LSiM 703). The LSiM 704c makes a massive impact and reveals sparkling pinpoint details, with a wide soundstage and deep bass reproduction. It puts you in the center of the action! Technical Specifications Driver Complements Tweeter 1 Diameter (2.54cm) Dynamic Balance enhanced ring radiator tweeter Midrange 3 1/4 Diameter (8.26cm) Dynamic Balance driver with super cell aerated polypropylene cone Mid/Woofer 5 1/4 Diameter (13.34cm) Dynamic Balance driver with super cell aerated polypropylene cone Electrical Total Frequency Response 40Hz - 40kHz Upper -3dB Limit 30kHz Lower -3dB Limit 70Hz Nominal Impedance 8 ohms Efficiency 88 dB Recommended Amplifier Power 20 - 200 Watts per channel Inputs Dual gold-plated binding posts Crossover Orth crossover design Tweeter/midrange crossover frequency 2.5kHz Midrange/midbass crossover frequency 280Hz Dimensions Cabinet height 7 3/4 (19.68cm) Cabinet width 21 3/16 (53.82cm) Cabinet depth 9 3/8 (23.81cm) Mid-high array enclosure Sealed Midwoofer enclosure Dual PowerPort® bass venting Product weight 29.1 pounds(each) Shipping Unit of Measure Each Total Shipping Weight 29.1 pounds Included Accessories Binding posts jumpers
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