Polk Audio Black High Definition Bookshelf Speakers - LSI9BK

Polk Audio Black High Definition Bookshelf Speakers, Model LSI9BK

Features:

• Superior musical accuracy, serious theatrical impact
• Designed for high definition formats such as SACD and DVD-Audio
• Mirror imaged pairs for tightly focused highs and true three-dimensional imaging with minimized room reflections: Hear what you've been missing!
  
• (2) 5 1/4" Dynamic Balance drivers with Aerated Polypropylene cones for wide response and low distortion
• Cascade Tapered Crossover array ensures flat miband response and improves imaging focus, and depth
• Cast aluminum driver baskets resist flexing and "ringing" for ultra-tight bass and coloration-free midrange
• Ultra high performance Ring Radiator tweeters, rare in speakers at this price, for extended frequency response, low distortion, excellent dynamics, and superior detail and transparency
• Side panels are 1-1/2" thick for a totally inert enclosure - you hear all the music and only the music
• Precise deep bass response provided by a rear-firing PowerPort® venting system built into the speaker's back plate
• Smooth, natural midrange reproduction thanks to patented Acoustic Resonance Control technology
• Magnetically shielded for safe placement near video monitors
• Premium crossover components with advanced transducers for consistent high-end sound quality
• Mylar bypass capacitor in the high-pass crossover extends and flattens high frequency response. Hear musical details you've never heard before!
• Open architecture low diffraction grille for spacious imaging
• Dual (bi-ampable) gold plated 5-way binding post inputs for the most secure wire connections and the most versatile wiring applications

Specifications:

Driver Complement

• Mid/Woofer
  • 2 - 5-1/4" Diameter (13.34cm)
    
  • Dynamic Balance with Aerated Polyprpylene cone, cast basket and rubber surround (shielded)
    
• Tweeter
  • 1 - 1" Diameter (2.54cm)
    
  • Dynamic Balance Ring Radiator (shielded)
    

Electrical

• Overall Frequency Response: 38Hz - 27kHz
  
• Lower -3dB Limit: 50Hz
  
• Upper -3dB Limit: 26kHz
• Nominal Impedance: 4 ohms
  
• Recommended Amplifier Power: 20 - 200 w/channel
  
• Efficiency: 88 dB
• Crossover
  • Driver 1: LPF at 200Hz 12dB/oct,
    
  • Driver 2: LPF at 2.4kHz, 12 dB/oct.
    
  • Tweeter: HPF at 2.4kHz 18dB/oct.
    
• Inputs: Dual gold plated 5-way binding posts for bi-amp/bi-wire hookup

Approximate Dimensions:

• Height: 14-7/8"
  
• Width: 8-5/8"
  
• Depth: 15-1/4"

Approximate Weight:

• Shipping: 60 lbs

Warranty Information:

• Manufacturers Warranty (authorized online retailer): 5 years parts and labor