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:
Additional Images

There are no downloads available. If you need assistance, please contact us.

The PSW300 powered subwoofer features:

  • The same robust Dynamic Balance® subwoofer driver as used in the SRT subwoofer
  • Video shielded driver for safe placement next to TVs
  • High Velocity Compression Drive® bandpass tuning technology for superior deep bass extension and control from a small enclosure
  • Patented Power Port venting for powerful bass with low noise and distortion
  • 5-way binding post speaker inputs for secure large gauge wire termination
  • High and low level inputs allow the PSW300 to be easily connected to any system
  • Built-in high pass filter (low level outputs only) enables low bass to be filtered from the main speakers for greater dynamic range and lower distortion
  • High current amplifier with auto on/off circuit
  • Overload protection circuitry for safe, high volume performance

Driver Complement, Subwoofer
10"(25cm) woofer
Cabinet Dimensions
18" H x 12 1/4" W x 20" D
45.7cm H x 31.1cm W x 50.8cm D
Overall Frequency Response
19Hz - 150Hz
-3db Frequency Response Limits
28Hz - 125Hz
Subwoofer Amplifier Power (Dynamic)
125 watts
speaker and line level
speaker and line level. Line level outputs high pass filtered at 80Hz
Crossover Frequency
adjustable 50Hz - 150Hz
Enclosure Type
HVCD® bandpass, vented

Driver Complement

Diameter10" (25.40cm) 


Total Frequency Response19Hz - 150Hz 
Upper -3dB Limit125Hz kHz
Lower -3dB Limit28 Hz
InputsSpeaker and line level 
OutputsSpeaker and line level. Line level outputs high pass filtered at 80Hz 

Amplifier Specs

Amplifier Type
Dynamic Power125 watts


Cabinet Dimensions
Height18" (45.72cm) 
Width12 1/4" (31.12cm) 
Depth20" (50.80cm) 


Total Shipping Weight48.00 pounds


Speaker Warranty5 years parts and labor (original purchaser) 

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.

PSW300 Media

PSW300 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.

PSW300 Accessories