Volume Control enables matching of output to overall system volume Frequency Range - 20 to 160Hz Signal Sensing On/Off circuit Dual inputs 3-way speaker terminals Black ash finish MDF construction reduces vibration & resonance Size - 17H x 13-3/4W x 15-1/16D; weighs 42 pounds  (less)

the sub's entire frequency range, even at ground-shaking volume levels. The Polk DSW PRO 400 also includes the Polk Room Optimizer(TM), 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. Removable feet let you position the PRO 400 for either front-firing or down-firing operation, whichever you prefer. The all-new DSW PRO Series represents more than a significant step forward in subwoofer ...  (less)

audible distortion without limiting volume. You get quick, precise response throughout the sub's entire frequency range, even at ground-shaking volume levels. The PRO 600 also includes the Polk Room Optimizer(TM), 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. Removable feet let you position the PRO 600 for either front-firing or down-firing operation, whichever you prefer. The all-new DSW PRO Series represents more than a sign...  (less)

precise response throughout the sub's entire frequency range, even at ground-shaking volume levels. The PRO 500 also includes the Polk Room Optimizer(TM), 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. Removable feet let you position the PRO 500 for either front-firing or down-firing operation, whichever you prefer. The all-new DSW PRO Series represents more than a significant step forward in subw...  (less)

oz. Double Stacked Magnet Structure 1600W Peak Dual 4 Ohms Nom. Impedance SPL: 91dB Mounting Depth: 6.4" Overall Diameter: 12.6"  (less)

oz. Double Stacked Magnet Structure 1200W Peak Dual 4 Ohms Nom. Impedance SPL: 91dB Mounting Depth: 5.6" Overall Diameter: 10.5"10" 1200W Dual Voice Coil  (less)

a built-in 120 Watt Amplifier and an 8" Down firing driver. It has Auto power on/off, line level and speaker level connections, 40Hz to 140Hz Continuously variable high-cut filter, High cut slope -24dB/octave, a volume control, Phase normal/reverse switch and Bass Selector switch. It has a Frequency Response of 28Hz-200Hz.  (less)

What you hear is quick, precise bass output with minimal audible distortion, even at ground shaking volume levels. Polk Room Optimizer (PRO) The DSW PRO Series remote control incorporates the Polk Room Optimizer (PRO) feature, four push-button room equalization presets that correct for room boundary effects for typical room placements: corner, short wall, long wall and mid-room. No matter where you place your DSW Pro Series sub, you re assured great bass performance. Klippel Optimized woofer By using a state-of-the-art Klippel Distortion Analyzer, Polk engineers were able to optimize the woofer s motor structure, voice coil alignment and suspension for the best possible performance even at extreme listeni...  (less)

options.The 13-ply birch enclosure is rigidly braced for solid response. A top-mounted, M20 threaded pole receptacle is used to ensure that even heavier, high-power satellite speakers can be securely mounted using the optional, adjustable SS4-BK speaker pole. Threaded insert points are provided for attachment of the optional WK-4 wheel kit. Features: 18" bass-reflex designed subwoofer Frequency response (?3 dB): 34Hz - 220Hz Power rating (continuous/program/peak): 800 watts/1600 watts/3200 watts @ 8 ohms Large port area for reduced distortion Inputs: Two Speakon NL-4 Black DuraFlex finish 16 gauge perforated steel grill 20mm threaded pole socket for solid secure satellite speaker mounting Optional WK-4 caster kit for roll-and-go mobility Size: 20"h x 23.5"w x 29.5"d. Wt. 79 lbs.  (less)