Dedicated digital power amplifier for CSW Series built-in subwoofers

3 1/2" H x 17" W x 12 5/8" D
8.89cm H x 43.18cm W x 32.07cm D



Available Finishes:
Additional Images

Bass Performance that's Out of Sight

The BASH amplifier combines the fidelity of conventional class A/B amplifiers with the efficiency of class D amplifiers. The bottom line is high power, and cool, reliable operation with precise definition and low distortion. Plug-in data cards for each subwoofer, called SPEX cards, preprogram equalization, infrasonic filter characteristics and power output that best matches the subwoofer being used. Each SPEX card also custom install subwoofers/amp has specific power control circuitry tailored to each subwoofer’s requirements for an even greater level of reliability.

SWA500 Features:

Class D digital design delivers huge power and runs cool for superb long-term reliability

500 Watts into 4 Ohms at <0.01% THD

Powers up to two CSW subs of the same model

Front panel low pass filter and level adjustment knobs make "tweaking" a snap.

Plug in SPEX circuit cards (supplied) optimize the amplifier to match the specific subwoofer model being used

Custom frequency shaping (programmed into SPEX card) for the deepest, most accurate bass perfromance

All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.

**The Innovations Design and Engineering Award is based upon descriptive materials submitted to the judges. CEA did not verify the accuracy of any submission or of any claims made and did not test the item to which the award was given.


InputsSpeaker level, line level & unfiltered LFE 
OutputsLine level unfiltered; speaker level parallel outputs 

Power Amplifier Specs

Power Requirements (voltage)120 

Subwoofer Amplifier Specs

Continuous Average Output
Bandwidth20 - 500 without filters or EQ Hz
Power Requirements (voltage)120V 60Hz AC 


Cabinet Dimensions
Height3 1/2" (8.89cm) 
Width17" (43.18cm) 
Depth12 5/8" (32.07cm) 


Unit of Measureeach 
Total Shipping Weight17.00 pounds
Included AccessoriesTwo SPEX circuit cards, one for each model of built-in subwoofer (CSW100 and CSW200) 


Subwoofer Amplifier Warranty3 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.

SWA500 Media

SWA500 Accessories