The Sub12 is a powerful subwoofer designed to extend the low frequency capabilities of any near or midfield monitoring system down to 22Hz. A sturdy special woofer with extended cone travel and a heavy-duty coil have been optimised 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). Features Panel: Rear Frequency response: 22 Hz - 150 Hz THD > 60 Hz: ≤1 % Peak SPL max at 1m: ≥115 dB Crossover frequencies: 50 - 150 Hz Input impedance: 10 KOhm Weight: 57.3 lb (26 kg) Height x Width x Depth: 23.5" (600 mm) x 14" (360 mm) x 17.5" (450 mm) Warranty: 5 Years