This product is a vintage Polk model and is not available for sale, but it may still be available in some stores as a closeout or used product. The following text is taken from the original sales brochure for this product and does not reflect current availability. If you happen to have any question or concerns about this product, or any other Polk Audio product, feel free to contact our Customer Service Department at 1-800-377-7655 Monday - Friday, 9am - 5:30pm EST


High-end performance stereo loudspeakers equipped with dynamic balance.

Available Finishes:

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The triumph of Dynamic Balance

The LS90 is truly Polk Audio's "state of the art" offering to date. It features four MW7100 Dynamic Balance 6.5" drivers in a progressive line source combined with the SL6000 Dynamic Balance 1" trilaminate dome tweeter. Two sets of gold plated fiveway binding posts are included, so bi-amping and bi-wiring options are available for even higher performance levels. The LS90s display an amazing combination of power, control, subtlety and agility. The LS90 can persuade you that you are hearing a live performance.

Polk Audio's LS Series represents the best of 20 years of groundbreaking research and design. Choose any LS model and enjoy the excitement that these products have generated among the critics and other LS owners. You will get the power, the accuracy and the impact of live music from loudspeakers of elegance and grace - a combination of value and performance made famous by Polk Audio.

Driver Complement

Diameter1" (2.54cm) 
Typedome tweeter 
Diameter6 1/2" (16.51cm) 


Total Frequency Response20Hz - 26kHz 
Upper -3dB Limit25 kHz
Lower -3dB Limit35 Hz
Nominal Impedance8 ohms
Efficiency90 dB
Recommended Amplifier Power30-250 watts per channel

Amplifier Specs

Amplifier Type


Cabinet Dimensions
Height40" (101.60cm) 
Width12 1/4" (31.12cm) 
Depth14 281/500" (36.99cm) 

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

LS90 Media

LS90 Literature

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LS90 Accessories