Product Description
The Lsim705 fills your world with its wide, dynamic soundstage and its capability to effortlessly achieve truly staggering volume levels. The Lsim705 features the same component complement as the larger Lsim707 loudspeaker, on a slightly smaller scale. It includes a 5 1/4 inch Mid Woofer of lightweight super cell Aerated polypropylene for smooth blending with its dual 5×7 inch Cassini oval subwoofer radiators enhanced by Polk’s patented power port bass Venting. Its 1 inch ring radiator tweeter, a feature usually found only in exotic speakers, reveals Pinpoint details for realistic imaging. Use the Lsim705 in mid sized rooms where you want the full on impact of the legendary Polk sound.
From the Manufacturer
The ultimate statement of Polk’s mission, the LSiM707 is like no other loudspeaker in its price range. Experience realistic, transparent midrange reproduction, pinpoint detail and the deepest bass with the LSiM 707. Engineered into a sculpted, state-of-the-art enclosure and finished like a beautiful piece of furniture, there is simply nothing like the LSiM 707.
key features
- 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.
- Cassini oval subwoofer, with more surface area than round drivers, dramatically improve low-frequency response for deep, well-blended bass.
- Our innovative overhung voice coil design augments the excursion length for subwoofer drivers, increasing their power-handling capabilities and enhancing bass response.
- 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.
take a look at this product
<!–- A completely self-contained wireless surround-channel sound system.
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<!–- Four 2-1/2″ Full-Range Drivers
- 5-1/4″ Woofer
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<!–- Compact 120 Watt Multichannel DSP Amplifier.
- Rock Solid Triple Enclosure Multi-Braced MDF Cabinet
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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 tweeter’s 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
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. It’s 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.
Extended Linear Motion (ELM) Voice Coils
Allowing lots of movement in a limited space, ELM voice coils power the LSiM midrange and mid-woofer drivers to extend their higher frequency response with much less impedance. (LSiM subwoofers use overhung coils, which allow the larger excursions and greater power handling necessary for big subwoofer performance.)
The LSiM Enclosure
The enclosure is an integral part of the sound design of the new LSiM Series. All LSiM cabinets are made of 1.0″ MDF on the sides, 3/4″ on the back and bottom, and wide radius baffles of robust 1 1/4-inch MDF. Substantial internal cabinetry, each driver with its own separate asymmetrical chamber, increases efficiency and banishes internal resonances and standing waves, for high power handling and incredible smoothness. The narrow baffle with its wide radiuses enhances the imaging for a very wide, deep and well-defined soundstage.
why you should consider this product
This is the pinnacle of home audio performance. It’s the place where recorded sources are accurately revealed, where their true dynamic qualities are fully experienced. It’s the place where movies reach off the screen and envelope you. This is the reason we got into this business in the first place: to ignite your entertainment with realistic audio impact, lifelike details and deep bass thrills. Hear over 40 years of audio passion in today’s LSiM series.
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 | 6 1/2″ Diameter (16.51cm) Dynamic Balance driver with super cell aerated polypropylene cone |
| Subwoofer | 2 – 9″ x 6″ Oval (22.86cm x 15.24cm) Dynamic Balance oval drivers with super cell aerated polypropylene diaphragms |
| Electrical | |
| Total Frequency Response | 20Hz – 40kHz |
| Upper -3dB Limit | 30kHz |
| Lower -3dB Limit | 38Hz |
| Nominal Impedance | 8 ohms |
| Efficiency | 88 dB |
| Recommended Amplifier Power | 20 – 300 Watts per channel |
| Inputs | Dual gold-plated binding posts |
| Crossover | Orth crossover design |
| Tweeter/midrange crossover frequency | 3kHz |
| Midrange/midbass crossover frequency | 300Hz |
| Midbass/woofer crossover frequency | 100Hz |
| Dimensions | |
| Cabinet height | 50 13/16″ (129.06cm) |
| Cabinet width | 9 1/2″ (24.13cm) |
| Cabinet depth | 18 7/16″ (46.83cm) |
| Mid-high array enclosure | Sealed |
| Subwoofer enclosure | Dual PowerPort® bass venting |
| Product weight | 99.2 pounds (each) |
| Shipping | |
| Unit of Measure | Each |
| Total Shipping Weight | 114.7 pounds |
| Included Accessories | Binding posts jumpers; Owners manual; Registration card |
| Warranty* | |
| Speaker Warranty | 5 years parts and labor (original purchaser) |
*To ensure a valid warranty, Polk loudspeakers must be purchased through an Authorized Polk home or car loudspeaker Dealer (such as Amazon.com). (If you’re not sure a dealer is “authorized,” call Polk at 1-800-377-7655, and ask us.) The warranty is not transferrable, that means it applies only to the original purchaser. If you purchase your speakers from a private individual, that product is considered “used” and has NO factory warranty, no matter what the seller implies. The warranty is VOID if the serial number of the speaker has been removed or defaced. If you have any questions about your warranty coverage, or you think you need service, call Polk Customer Service at 1-800-377-7655. We’re here to help you get the most from your new speakers!
in the box
- One LSiM 707 floorstanding loudspeaker
- Owner’s manual
- Online registration card
use with these products
LSiM 706c center channel loudspeaker
LSiM 702FX surround loudspeakers
downloads
Superior Performance Tower Speaker – Features advanced Super Cell Aerated Polypropylene driver material in all drivers—3.25 inches midrange, 5.25 inches midbass as well as dual 5 inches x 7 inches Cassini oval subwoofers
Speaker Within a Speaker – The Heart of LSiM Floor Standing Speaker Features Polk’s Dynamic Sonic Engine That Houses a 3.25 Inches Midrange Driver & a 1 Inches Ring Radiator Tweeter, Which Gives Wider Dispersion, and More Power for Smooth Effortless
Polk’s Patented Powerport Technology – Both Woofers Have Their Own Dedicated PowerPort That Delivers Deeper Bass Response, Minimizing Any Kind of Distortion and Giving You Rich Full Range Sound for Movies, TV and Music
AN UNMATCHED HOME THEATER – Use any mix of bookshelf & floor standing speakers with this center channel or add a pair of 705 towers & 702 F/X surround speakers to create an elegant stereo setup with the LSiM series and get immersed in beautiful, luxurious sound
Bold Looks and Exceptional Audio Accuracy Made of High Quality Mdf and Enclosed in Rich, Natural Furniture Grade Veneer, This Speaker Looks Stunning and Takes Forward Polk’s Commitment Towards Making Superior Audio Accessible to Everyone
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