Polk Audio LSiM705 Floorstanding

Polk Audio

Out of stock

  • Dynamic Sonic Engine
  • Dual woofers

This product is currently out of stock and unavailable.

High Quality Sound

Fills your world with its wide, dynamic soundstage and its capability to effortlessly achieve truly staggering volume levels. The LSiM705 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 PowerPort? bass venting.

Accurate dialogue

The ring radiator tweeter features several improvements from the version in the earlier LSi line. A slight reshaping of the tweeter’s bullet-shaped phase plug allows it to move even farther out of the baffle, while a redesigned diaphragm has made the tweeter even more efficient.

Advanced driver material

The original LSi speakers featured a light, stiff mineral-filled polypropylene cone that was “puffed up” with injected air to form a honeycomb-like structure. The new super cell aerated polypropylene uses larger “puffed cells” to create a cone material that’s thicker yet lighter than the original.

Dual woofers

The oval shape helps them produce tight low-frequency music and movie sounds while maintaining a narrow cabinet width. Plus, each woofer has its own PowerPort? ? a unique Polk design that positions specially designed “cones” at the mouth of the bass ports to direct moving air to eliminate bass-stealing turbulence.

SKU: N/A Category:
Weight 42000 g
Dimensions 1270 × 350 × 510 mm


Black, Walnut

Driver Enclosure Type Sealed
Driver Complement • (1) 3.25″ (8.26 cm) d (Round) Super Cell Aerated Polypropylene – Mid/Woofer
• (2) 5″ (12.7 cm) d (Round) Super Cell Aerated Polypropylene – Midrange
• (2) 7″ (17.78 cm) h x 5″ (12.7 cm) w (Oval) Cassini oval, Super Cell Aerated Polypropylene – Subwoofer
• (1) 1″ (2.54 cm) d (Round) Enhanced Ring Radiator – Tweeter
Enclosure Type Mid-High Array Enclosure TypeSealed
Enclosure Type Subwoofer Enclosure Type
Dual Power Port bass venting
Total Frequency Response 22 Hz → 40,000 Hz
Nominal Impedance 8 ohms
Lower and Upper -3dB Limits 42 Hz → 30,000 Hz
Type Orth Crossover Design
Midrange/Woofer Crossover Frequency 100 Hz
Tweeter/Midrange Crossover Frequency 2800 Hz
A V Receiver Crossover Settings (40 Hz)
Recommended Amplifier Power Per Channel 20 watts → 250 watts