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)

Basket. 4-Layer Long Voice Coil  (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)

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)

built-in 150hz/18db/octave subwoofer crossover w/1/4 trs output * current in-rush limiter * over-heat short circuit clip limiting faulty load & dc circuits protect your valuable sound reinforcement speakers & the cpx amplifier * barrier strip balanced xlr & 1/4 trs inputs w/signal pass-through * neutrikr speakonr & 5-way binding post outputs * separate bridged outputs featuring neutrik speakon connector & resessed mode switch * rear-panel gcl defeat switch * rear rack supports * 14-gauge steel chassis * mil-spec fiberglass circuit boards * massive toroid transformer & storage capacitors * cpxt series power amplifiers: three rugged ultra-affordable power designs in the great crest audio tradition. * in typical crest a...  (less)