Floor-standing Speakers

Polk LSiM Home Theater Speaker System

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Introduction to the Polk LSiM Home Theater Speaker System

Since being introduced about 10 years ago, the Polk LSi series of speakers was one of the first lines I'd recommend to people who cared about sound but didn't want to break the bank. With performance that was well above their price class and numerous models, the LSi series could be configured to meet the needs of just about anyone or any room. Fast forward to 2012 and we have a new from-the-ground-up version of the LSi: the LSiM. Starting from a blank slate, Polk has released six new models, four of which are on hand for this review. To see if the new LSiM series speakers could live up to the high standards of its predecessors, I requested a full surround setup for my large media room.

POLK LSIM HOME THEATER SPEAKER SYSTEM SPECIFICATIONS

LSiM 707

  • Design: 4-way Tower, Sealed (Mid Array) and Ported (Woofers)
  • Drivers: 1 x 1" Ring Radiator Tweeter, 1 x 3.25" Midrange, 1 x 6.5" Mid/Woofer, 2 x 6" x 9" Woofers
  • MFR:  30 Hz - 38 kHz, - 3 dB
  • Nominal Impedance:  8 Ohms
  • Crossover Frequencies: 3 kHz, 300 Hz, 100 Hz
  • Sensitivity:  88 dB
  • Recommended Amplifier Power: 20-300 Watts
  • Dimensions: 50.2" H x 10.5" W x 20.3" D
  • Weight:  99.2 Pounds/each
  • Standard Finishes: Midnight Mahogany or Mt. Vernon Cherry Real Wood Veneer
  • Warranty:  5 Years
  • MSRP: $1,999.95/each USD

LSiM 706c

  • Design: 3-way Center Channel, Sealed (Mid Array) and Ported (Woofers)
  • Drivers: 1 x 1" Ring Radiator Tweeter, 1 x 3.25" Midrange, 2 x 6.5" Mid/Woofers
  • MFR:  50 Hz - 30 kHz, - 3 dB
  • Nominal Impedance:  8 Ohms
  • Crossover Frequencies: 2.8 kHz, 280 Hz 
  • Sensitivity:  88 dB
  • Recommended Amplifier Power: 20-250 Watts
  • Dimensions: 9" H x 28.75" W x 13.8" D
  • Weight:  42.3 Pounds
  • Standard Finishes: Midnight Mahogany or Mt. Vernon Cherry Real Wood Veneer
  • Warranty:  5 Years
  • MSRP: $1,199.95 USD

LSiM 703

  • Design: 3-way Bookshelf, Sealed (Mid Array) and Ported (Woofer)
  • Drivers: 1 x 1" Ring Radiator Tweeter, 1 x 3.25" Midrange, 1 x 6.5" Mid/Woofer
  • MFR:  50 Hz - 30 kHz, - 3 dB
  • Nominal Impedance:  8 Ohms
  • Crossover Frequencies: 2.8 kHz, 280 Hz 
  • Sensitivity:  88 dB
  • Recommended Amplifier Power: 20-250 Watts
  • Dimensions: 16.75" H x 8.7" W x 14.8" D
  • Weight:  29.6 Pounds/each 
  • Standard Finishes: Midnight Mahogany or Mt. Vernon Cherry Real Wood Veneer
  • Warranty:  5 Years
  • MSRP: $749.95/each USD

LSiM 702F/X

  • Design: 3-way Surround, Sealed (Mid Array) and Ported (Woofer)
  • Drivers: 1 x 1" Ring Radiator Tweeter, 1 x 3.25" Midrange, 1 x 6.5" Mid/Woofer
  • MFR: 55 Hz - 30 kHz, - 3 dB
  • Nominal Impedance:  8 Ohms
  • Crossover Frequencies: 2.4 kHz, 240 Hz 
  • Sensitivity:  88 dB
  • Recommended Amplifier Power: 20-200 Watts
  • Dimensions: 16.25" H x 19.9" W x 6.75" D
  • Weight:  28.9 Pounds/each 
  • Standard Finish: Black Gloss
  • Warranty: 5 Years
  • MSRP: $1,499.95/pair USD
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