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


Powered subwoofer with patented Power Port technology

Available Finishes:

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Explosive Performance for Movies and Music

If you're looking for clean high output bass from a small stylish package, the PSW550 is the sub for you. Don't let the modest enclosure and driver size fool you. The 8 inch driver is remarkably robust, featuring a long-throw motor and suspension for deep, loud bass that belies its size. Patented Power Port venting further helps the PSW550 perform like a much larger subwoofer. Bigger subwoofers run and hide when confronted with the dainty but dangerous PSW550.

The PSW550 features:

  • Long-throw 8-inch direct radiating subwoofer driver for deep bass
  • Floor coupled Power Port bass vent for deep bass and high acoustic efficiency with low distortion
  • High current power amplifier
  • Magnetically shielded for safe placement near your TV
  • Stylish high gloss black finish
  • Auto on/off circuit that automatically turns your subwoofer on when it senses a program signal. When no signal is present, the amplifier turns off within 15 minutes
  • Unfiltered LFE input for use with low pass filtered subwoofer output jacks
  • Adjustable lowpass crossover, phase switch and volume control allows perfect blending with any main speaker.

Driver Complement

Diameter8" (20.32cm) 
TypeLong-throw, mineral filled composite with rubber surround, shielded 


Total Frequency Response28Hz - 200Hz 
Upper -3dB Limit180Hz kHz
Lower -3dB Limit32 Hz
Subwoofer CrossoverVariable 60-160Hz Low Pass Filter 
InputsSpeaker and line level inputs (filtered), line level LFE input (unfiltered) 
Outputsspeaker level 

Amplifier Specs

Bandwidth30 -200 
Continuous Average Output
Amplifier TypeSubwoofer 
Dynamic Power250 watts


Cabinet Dimensions
Height16 1/2" (41.91cm) 
Width13 1/2" (34.29cm) 
Depth15 1/2" (39.37cm) 
Width13 1/2" (34.29cm) 
Depth15 7/16" (39.21cm) 


Unit of Measureeach 
Total Shipping Weight39.00 pounds


Speaker Warranty5 Years parts and labor 
Subwoofer Amplifier Warranty3 Years parts and labor 

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.

PSW550 Media

PSW550 Literature

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PSW550 Accessories