The Adam Audio SUB12, 12-inch Nearfield Monitor Subwoofer - 200 W is designed to extend the low frequency capabilities of any near or midfield monitoring system down to 22 Hz. A sturdy special woofer with extended cone travel and a heavy-duty coil has been optimized for accurate reproduction from a bass reflex enclosure. The down-firing bass reflex tube avoids intrusive ventilation noise because of its generous size and shape. The PWM amplifier produces over 90% efficiency and can handle critical passages without overheating for long periods of time. An additional output allows you to cascade as many subwoofers as needed. The Sub12 subwoofer provides a precise combination of low cutoff frequency (-3dB at 22Hz) and an undistorted high sound pressure level (115dB SPL at 1m). Product Specifications: General Data: Panel: Rear Delivery Contents: Power cord, manual Audio Input Connectors: Analog: XLR / RCA Input Impedance: 10 kOhm Amplification: Type: PWM Amp. Power RMS / Music: 200 W / 300 W Acoustics: Frequency Response: 22 Hz – 150 kHz THD > 60 Hz: ≤1 % Max. peak SPL at 1 m: ≥115 dB Crossover Frequencies: 50 - 150 Hz Driver: Basket Diameter: 12" Voice Coil Diameter: 2" (50 mm) Cone Material: Paper Weight: 57.3 lbs (26 kg) Dimensions Height x Width x Depth: 23.5″ (600 mm) x 14″ (360 mm) x 17.5″ (450 mm) Shipping Weight: 60 lbs. Shipping Dimensions: 24 in x 18 in x 15 in