The New Bookshelf for Serious Listening

  • Dynamic Balance
  • 3-Way Driver System
  • 749.95 Each
Add to Cart
  • 749.95 Each
Add to Cart
  • Free ground shipping on all orders

The Flagship of Bookshelf Speakers

The LSiM series loudspeaker is Polk Audio's best high-performance loudspeaker. Polk Audio designed the LSiM series loudspeakers to create a sound that virtually transports you to the scene of the recorded performance.

Dynamic Balance

Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response, & low distortion.

3-Way Driver System

The Polk Audio LSiM series bookshelf loudspeaker employs a 3-way driver system for crisp, detailed highs; natural, lifelike midrange; and accurate, dynamic midbass.

PowerPort Bass Venting

To eliminate bass-stealing turbulence at the mouth of the port, Polk Audio engineers designed the PowerPort. It's unique shape promotes "laminar" airflow even in short tube ports by mimicking the properties of longer, flared port openings. No turbulence means no wasted power, which means more efficient bass response.

  • Tech Specs
  • Reviews
  • Q & A
  • Support
Tech Specs


  • Total Pieces


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

Shipping Cartons

  • Carton 1
    32.5 lbs (14.74 kg)

Bookshelf Speaker

  • Qty Included
  • Availability
  • Height
    16.75" (42.55 cm)
  • Width
    8.81" (22.38 cm)
  • Depth
    14.56" (36.98 cm)
  • Weight
    29.6 lbs (13.43 kg)
  • Driver Enclosure Type
  • Driver Complement
    • (1)  6.5" (16.51 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) Enhanced Ring Radiator - Tweeter
  • Enclosure Type
    Mid-High Array Enclosure Type: Sealed
  • Enclosure Type
    Midwoofer Enclosure Type: PowerPort bass venting

Audio Quality

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


  • Type
    Orth Crossover Design
  • Tweeter/Midrange Crossover Frequency
    2800 Hz

External Amplifier

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