LSiM704c

The Smaller LSiM Center Channel Speaker

  • Dynamic Balance
  • PowerPort Bass Venting
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  • 749.95
  • 374.98 Each
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The All Star Center

Capable of making quite an impact in your home theater system. It produces the kind of wide, deep soundstage and life-sized imaging that puts you in the middle of the action on your TV's screen.

PowerPort® technology

Designed exclusively by Polk, this specially shaped "cone" at the mouth of the bass port directs moving air to eliminate bass-stealing turbulence. No turbulence means no wasted power, which means more efficient bass response.

High-quality tweeter performance

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.

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Tech Specs

Overall

  • Total Pieces
    1

Warranty

  • Cabinet Warranty
    5 years
  • Drivers Warranty
    5 years
  • Original Purchaser Only
    Yes

Shipping Cartons

  • Carton 1
    29 lbs (13.15 kg)

Center Channel Speaker

  • Qty Included
    1
  • Availability
    US
  • Front Array Driver Enclosure Type
    Sealed
  • Front Array Driver Complement
    • (2)  5.25" (13.34 cm) d (Round) Super Cell Aerated Polypropylene - Mid/Woofer
    • (1)  3.25" (8.26 cm) d (Round) Super Cell Aerated Polypropylene - Midrange
    • (1)  1" (2.54 cm) d (Round) - Tweeter
  • Enclosure Type
    Mid-High Array Enclosure Type: Sealed
  • Enclosure Type
    Midwoofer Enclosure Type: Dual PowerPort bass venting

Crossover

  • Type
    Orth Crossover Design
  • Midrange/Woofer Crossover Frequency
    280 Hz
  • Tweeter/Midrange Crossover Frequency
    2500 Hz

Audio Quality

  • Total Frequency Response
    40 Hz → 40,000 Hz
  • Nominal Impedance
    8 ohms
  • Lower and Upper -3dB Limits
    70 Hz → 30,000 Hz

External Amplifier

  • Recommended Amplifier Power Per Channel
    20 watts → 200 watts
Reviews
Q & A
Support