Polk Audio LSiM703
Model #: Polk Audio LSiM703
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There’s no doubt that bookshelf
loudspeakers offer greater placement flexibility than floorstanding loudspeakers
but usually with a trade-off in performance. Not so with the LSiM703 bookshelf
loudspeakers. 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 LSiM703 delivers a wide, deep,
dynamic soundstage. The addition of the proprietary 1-inch ring radiator tweeter
adds pinpoint detail for realistic imaging. With the performance of the
groundbreaking LSiM Series in a smaller, flexible bookshelf speaker format, the
LSiM703 gives you the best of all worlds.
Polk’s 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.
Enhanced, reengineered ring radiator tweeters extend top-end response for
incredible details and realistic imaging.
Our innovative overhung voice coil design augments the excursion length for
subwoofer drivers, increasing their power-handling capabilities and enhancing
Extended Linear Motion voice coil design allows lots of movement in a limited
space, eliminating 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.
Klippel motor optimization uses laser measurement technology to ensure a smooth
excursion path at either end of the volume spectrum for uniform performance at
both low and high volumes.
Polk’s proprietary, patented Dynamic Balance® technology allows
our engineers to design out distortion-causing driver and system resonances, so
you only hear the good sounds.
Our super cell aerated polypropylene cone is the ideal balance of lightweight
stiffness (for more efficient action with less distortion-causing flex) and
superior damping properties.
Durable, computer-modeled, injection-molded butyl rubber surrounds suppress
unwanted cone resonances for a lifetime of reliable sound.
High quality, heavy duty LSiM enclosure construction features 1.0" MDF on
the sides, 3/4" MDF on the back and bottom and 1 1/4-inch baffles with
substantial internal bracing and separate interior cabinetry for each driver.
These exceptionally robust materials efficiently eliminate cabinet resonances
and standing waves for less distortion and more dynamic transparency.
Beautiful furniture-grade hardwood veneer cabinet finishes, with sleek trim
accents and no visible screws.
Super-thin zero-diffraction grilles lock in place magnetically, and never
obscure your sound.
bass venting is Polk’s patented design for smoothly transitioning the air
flow from the port into your listening area, eliminating turbulence and
distortion, for bigger, more efficient, deep bass impact.
All Polk loudspeakers are timbre-matched within their series, designed with the
same components throughout, to achieve seamless speaker-to-speaker blending
effects in multi-channel systems.
Dual gold-plated, professional-style 5-way binding posts, for the most secure
Dual binding posts allow bi-amp or bi-wire connections, for the ultimate in
customized high performance audio.
All Polk products are made using the best materials and the most advanced
manufacturing techniques. They pass the industry’s most exhaustive quality
tests, including drop testing, extreme signal response and UV & salt
exposure testing. Polk loudspeakers are built to perform for a lifetime.
The LSiM Manual Here: