Sundown Audio U-Series v.1 10" Subwoofer (D4) - 1500W RMS, Dual 4-Ohm, 30mm Xmax, 3" CCAW Voice Coil, Optimized for Small Ported Enclosures

Sundown Audio U-Series v.1 10" D4 Subwoofer: High-Performance BassThe Sundown Audio U-Series is the premier "standard suspension" woofer series, engineered to maximize power handling and longevity while being cost-effective. The U-Series is designed to be a direct replacement for the Z v.3 line and is built to withstand demanding music enjoyment and competition use.Core Power and Motor TechnologyThe U-Series motor is built for robust 1500W RMS power handling:Voice Coil: Uses a 2.36" long / 3" diameter 4-layer aluminum winding on a Black Aluminum former for superior heat dissipation.Magnet System: Features a double-stacked / 8.66" wide Y35 grade ferrite magnet system coupled to a one-piece T-Yoke.Excursion: Achieves 30mm Xmax with a 0.6" long pole-extension to keep the coil under control.Advanced Inductance and Thermal ManagementThe design includes specific features to maintain control and temperature under high power:Inductance Control: Features a 5mm thick aluminum shorting ring inside the magnets to reduce static inductance.Venting: Coil temperature is regulated by a heavily smoothed high-velocity pole-vent, ten direct air-gap vents, and innovative cast aluminum vented frame spacer rings.Frame: Built on an all-new cast aluminum frame that allows for taller cones, providing enhanced coil stability.SpecificationsThe SW-UV110D4 features a Dual 4-Ohm configuration:DC Resistance (Re): 6.1 OhmsResonance Frequency (Fs): 41.1 HzTotal Q Factor (Qts): 0.35Sensitivity: 84.9 dB @ 1w/1mBL (NA): 29.7Mounting Depth: 7.007 inchesRecommended Enclosure: Optimized for 0.5 cu ft sealed or 1.0 cu ft ported enclosures. Recommended Port Area is 16 sq in.Durable Construction and VersatilityThe subwoofer includes cast Aluminum surround bolt-on rings, heavy duty cast basket, and spring loaded terminals that accept up to 8 gauge wire.

• High-Power 1500W RMS Rating: Features a 2.36" long / 3" diameter 4-layer aluminum winding voice coil rated for 1500 Watts RMS. Uses a Black Aluminum former for superior heat dissipation.
• Advanced Motor Design: Utilizes a powerful double-stacked 8.66" wide Y35 grade ferrite magnet system with a 5mm thick aluminum shorting ring to reduce static inductance. Motor has a 0.6" long pole-extension for coil control.
• Enhanced Thermal Management: Coil temperature is regulated by a heavily smoothed high-velocity pole-vent, ten direct air-gap vents, and cast aluminum vent rings to effectively exchange air over the voice coil.
• Durable & High-Excursion Build: Features 30mm Xmax and an all-new cast aluminum frame with cast-aluminum surround clamps for enhanced stability. Includes double stitched surround and double-XL tinsel leads.
• Optimized Enclosure Specs (D4): Features a Dual 4-Ohm (6.1 Ω Re) configuration, ideal for amplifier matching. Optimized for 0.5 cu ft sealed or 1.0 cu ft ported enclosures. Outside Diameter is 10.94" with a 9.17" cutout.