The Subpulse is a no-compromise subwoofer, designed to perfectly complement the Pulserod sonically and aesthetically. Each houses a state-of-the-art, extreme excursion 15" woofer with a precision-formed anodized aluminum cone, mated to a 1100W switching amp that provides effortless power. The enclosure - as much a work of art as functional - is precision machined from 21 pieces of solid aluminum stock; the walls are 1.25" thick, and the top and bottom plates are a full 2" thick. The Subpulse employs the same cutting-edge design and construction techniques as the Pulserod, and provides reference-class performance in the difficult bottom octaves. For larger rooms or home theater installations, two Subpulse units are recommended for lower distortion, greater dynamic range, and uniformity of room mode excitation. Specifications: Construction: Precision CNC machined from 21 solid aluminum blanks, each 2" thick, plus stainless steel damper plates Driver: 15" custom-made, 2.6" peak-to-peak linear excursion Driver loading scheme: Sealed enclosure, virgin wool damping Amplification: 1100W ICEpower switching amplifier built-in, 110 or 220 VAC selectable operation Analog input circuitry: Sonicweld-designed balanced front end, special EMI/RFI rejection circuit for ultra-low distortion and noise immunity AC conditioning: Multiple, redundant surge protection and noise filtration circuits built-in Weight: 220 lbs. each (99.79 kg) Dimensions: 18" x 18" x 18" (45.72 cm x 45.72 cm x 45.72 cm) Frequency response: 16 - 200 Hz, crossover executed digitally, typically at 90 Hz, 72 dB/octave (dependent on customer's room and system optimization) Warranty: 10 years, transferrable