Feel the rumble in your movies with this powerful subwoofer

Pump up the excitement on movie night with the Polk DSW PRO 550wi. It sports a 10" woofer driven by a muscular 200-watt amplifier that'll make your hair stand up during intense action sequences. This advanced subwoofer features Polk's exclusive Feed Forward™ technology, which reduces audible distortion without limiting volume. You get quick, precise response throughout the sub's entire frequency range, even at wall-shaking volume levels.

Sounds great no matter where you place it

The PRO 550wi also includes the Polk Room Optimizer™, an ingenious feature that lets you specify the location of your sub with one of four options — corner, mid-wall, in-cabinet, or mid-room. The Optimizer then automatically equalizes the sub's response to ensure smooth, clean bass from that position. You can easily access this function, as well as the volume control and phase switch, with the included remote, so you can fine-tune the bass from your favorite listening spot. Removable feet let you position the PRO 550wi for either front-firing or down-firing operation, whichever you prefer.

Product highlights:

• 200-watt RMS Class D amplifier
• 10" down-firing woofer (feet can be repositioned for front-firing operation)
• bass-reflex (ported) enclosure
• Feed Forward technology maximizes output and improves dynamic performance
• Polk Room Optimizer delivers punchy bass no matter where you place the sub in your room
• Night mode dynamic range compression
• frequency response: 30-125 Hz (-3dB)
• continuously variable 60-120 Hz crossover
• 4-position phase switch (0, 90, 180, and 270 degrees)
• auto on/off
• Energy STAR® certified
• speaker-level and line-level inputs and outputs
• unfiltered LFE (low frequency effects) input
• remote control
• 15-1/2"W x 16-1/4"H x 18-1/16"D