The closed SVS reference subwoofer SB-16-ULTRA exceeds all expectations in its compactness. Accurate low frequencies, down to 14 HZ with massive output and high transient speed. The massive 16' Ultra driver with a powerful 8' Edge Wound Voice Coil is powered by a sensationally powerful (1,500 watts continuous power, 5,000+ watts peak power) Sledge Amplifier. The SB-16-ULTRA embodies tireless passion for bass performance and the demand for the highest perfection in technology, workmanship and sound. This approach paired with groundbreaking technology and rigorous design led to the development of the SB-16-ULTRA.