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The Ultimate Floorstanding Loudspeaker in Midnight Mahogany

Polk Audio LSIM707MIDNIGHTMAHOGANY

Features

  • Separate chambers for the midrange and tweeter improve transient response and imaging
  • Cassini oval subwoofer drivers have more surface area for superior low-frequency response
  • Klippel motor optimization ensures smooth volume spectrum ends for uniform performance at all volumes
  • Patented Dynamic Balance® technology eliminates resonance so you hear good sound instead of distortion

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The Flagship of

Floor-Standing Speakers

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Dynamic Sonic Engine

Exclusive Polk Audio 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.

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Beautifully Blended Bass

Cassini oval subwoofer drivers have more surface area than round drivers, dramatically improving their low-frequency response for deep, well-blended bass. The result is sound that seamlessly varies among frequencies for more lifelike reproduction.

Dynamic Sonic Engine Exclusive Polk Audio 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.

Beautifully Blended Bass Cassini oval subwoofer drivers have more surface area than round drivers, dramatically improving their low-frequency response for deep, well-blended bass. The result is sound that seamlessly varies among frequencies for more lifelike reproduction.

Voice Coil Innovation for Enhanced Response Innovative overhung voice coil design augments the excursion length for subwoofer drivers, increasing their power-handling capabilities and enhancing bass response. Extended linear motion allows lots of movement in a limited space, eliminating impedance and extending mid- and high-frequency response.

Klippel Motor Optimization Laser measurement technology ensures a smooth excursion path at either end of the volume spectrum for uniform performance at high and low volumes.

Dynamic Balance® Technology Polk Audio engineers created a way to design out distortion-causing driver and system resonance. That means you hear the sounds created by the artists not the components.

Super Cell Aerated Polypropylene Cone Aerated Polypropylene has the ideal balance of superior damping properties and lightweight stiffness for more efficient action with less distortion. The durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for purer sounds note after note.

Extra Solid Cabinet Enclosures High-quality, heavy-duty enclosure construction on the back and bottom, as well as baffles with substantial internal bracing and separate interior cabinetry for each driver eliminate cabinet resonances.

Features

  • Separate chambers for the midrange and tweeter improve transient response and imaging
  • Cassini oval subwoofer drivers have more surface area for superior low-frequency response
  • Klippel motor optimization ensures smooth volume spectrum ends for uniform performance at all volumes
  • Patented Dynamic Balance® technology eliminates resonance so you hear good sound instead of distortion
---Overall---
Total Pieces 1
Audio Quality
Total Frequency Response 20 Hz → 40,000 Hz
Nominal Impedance 8 ohms
Sensitivity (1 watt @ 1 meter) 88 dB
Lower and Upper -3dB Limits 38 Hz → 30,000 Hz
Warranty
Cabinet Warranty 5 years
Drivers Warranty 5 years
Original Purchaser Only Yes
---Floor Standing Speaker---
Qty Included 1
Height 50.81" (129.06 cm)
Width 9.5" (24.13 cm)
Depth 18.44" (46.84 cm)
Weight 99.2 lbs (45 kg)
Mid-High Array Driver Enclosure Type Sealed
Mid-High Array Driver Complement
  • (1) 1" (2.54 cm) d (Round) Enhanced Ring Radiator - Tweeter
  • (1) 3.25" (8.26 cm) d (Round) Super Cell Aerated Polypropylene - Midrange
  • (1) 6.5" (16.51 cm) d (Round) Super Cell Aerated Polypropylene - Mid/Woofer
  • (2) 6" (15.24 cm) h x 9" (22.86 cm) w (Oval) Cassini oval, Super Cell Aerated Polypropylene - Subwoofer
Enclosure Type Mid-High Array Enclosure Type: Sealed
Enclosure Type Subwoofer Enclosure Type: Dual PowerPort bass venting
Crossover
Type Orth Crossover Design
Midrange/Woofer Crossover Frequency 100 Hz
Tweeter/Midrange Crossover Frequency 3000 Hz
External Amplifier
Recommended Amplifier Power Per Channel 20 watts → 300 watts
Inputs
Speaker Inputs (2) Pair of Binding Posts - Gold Plated

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.