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

Available Finishes:

Explosive Performance For Movies And Music

Robust (adj.) 1. Full of strength, vigorous. 2. Rich and full. Bingo. Mid-sized room? Need big bass, but don't need a subwoofer that's as big as your couch? Try the PSW303. 100 watts of continuous power move the beefy high excursion 8-inch driver with incredible bass and accurate musicality. Its modest size makes it easy to place in a cabinet or behind furniture for unobtrusive high performance. (Unobtrusive (adj.) Not noticeable.)

PSW303 Features

  • Real wood veneer finish
  • Slot Load Venting improves bass response. The wide, long Slot Load Vent dramatically lessens turbulence, noise and distortion, pouring out a tidal wave of precise, thunderous bass!
  • Polk subs sound better because they're built better. Rock-solid MDF construction (including a 1 inch thick front baffle) suppresses enclosure panel resonance for distortion-free, accurate response.
  • Big 8 inch Long Throw Driver for longer excursion and better linearity.
  • Huge Hi-Roll Surrounds that support their longer excursion.
  • Most powered subwoofers are good for just gut-rumble and boom. Polk understands that you listen to music too so our subs are tight, precise and accurate.
  • High current 100 Watt Continuous (260 Watt Dynamic) power amplifier.
  • Adjustable lowpass crossover, phase switch and volume control allows perfect blending with any main speaker.
  • 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
  • Magnetically shielded for safe, flexible placement.

Driver Complement

Diameter8" (20.32cm) 
TypeHigh excursion Polymer composite cone with hi-roll surround, shielded 


Total Frequency Response28 - 200Hz 
Upper -3dB Limit160Hz kHz
Lower -3dB Limit35 Hz
Inputsspeaker level and line level (filtered), LFE (unfiltered) 
OutputsSpeaker level 

Amplifier Specs

Bandwidth35Hz - 160Hz 
220V AvailabilityYes 
Continuous Average Output
Amplifier Type
Dynamic Power260 watts


Cabinet Dimensions
Height12 7/16" (31.59cm) 
Width11 7/16" (29.05cm) 
Depth16 1/2" (41.91cm) 
Product Weight (each)27.00 pounds


Unit of Measureeach 
Total Shipping Weight31.00 pounds


Speaker WarrantyFive years parts and labor 
Subwoofer Amplifier WarrantyThree 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.

PSW303 Media

PSW303 Literature

Want to know more? Want to dig just a little deeper to learn about this product? Here's a list of source material that will give more detail, other perspectives, and answer questions you may have.

PSW303 Accessories