Sundown Audio SUN-EV78D4 E-Series v.7 8" 400W RMS 4-Ohm Dual Voice Coil Subwoofer

When you want powerful bass performance from a compact subwoofer, the Sundown Audio E-Series v.7 8" Subwoofer delivers impressive low-frequency output in a space-efficient design. Rated at 400W RMS and 800W peak power, this 8-inch subwoofer is engineered to provide strong, responsive bass in properly designed ported enclosures. Its Dual 4-Ohm voice coil configuration provides flexible wiring options, allowing a single subwoofer to be wired to a 2-Ohm or 8-Ohm final impedance to accommodate different amplifier and system configurations. Built for demanding car audio applications, the E-Series v.7 features a 2" high-temperature, 4-layer copper voice coil, double-stacked magnet, high-strength stamped steel frame, and a durable poly-cotton blend spider designed to handle the motor's output. Its heavily vented magnetic gap and solid pole piece help improve heat dissipation, supporting thermal performance during extended operation. With 14mm of one-way linear Xmax, stitched-on Mini-XL tinsel leads, and high-quality push terminals, this subwoofer is designed to deliver controlled cone movement, dependable power handling, and impactful bass from a compact 8-inch driver. Key Features High-Output 8" Subwoofer – Delivers 400W RMS and 800W peak power handling for powerful low-frequency performance Dual 4-Ohm Voice Coil – Provides flexible wiring options, including 2-Ohm or 8-Ohm final impedance configurations 14mm One-Way Linear Xmax – Provides substantial cone excursion for deep, responsive, and controlled bass output 2" High-Temperature Voice Coil – Features 4-layer copper voice coil wire designed for reliable power handling Double-Stacked Magnet – Provides strong magnetic motor performance for demanding bass applications Vented Magnetic Gap and Solid Pole Piece – Helps improve cooling and heat dissipation during extended operation High-Strength Stamped Steel Frame – Provides structural support and durability during high-output operation Poly-Cotton Blend Spider – Designed to handle the motor's output while maintaining controlled cone movement Reinforced Spider Construction – Bolted and glued spider attachment adds strength and durability Stitched-On Mini-XL Tinsel Leads – Designed to provide reliable electrical connections and long-term durability High-Quality Push Terminals – Allows convenient and secure speaker wire connections Ported Enclosure Optimized – Designed for efficient bass output in a recommended 0.65 cu. ft. ported enclosure tuned to 35 Hz Compact Installation Design – 4.98" mounting depth makes it suitable for a variety of custom car audio installations E-Series v.7 Platform – Engineered to deliver impressive bass performance and dependable power handling in a compact subwoofer design Specifications Model: EV78D4 Series: E-Series v.7 Subwoofer Size: 8" Subwoofer Type: Standard Subwoofer Voice Coil Configuration: Dual 4 Ohm Recommended Final Impedance: 2 Ohms or 8 Ohms Power Handling RMS: 400 Watts Power Handling Peak: 800 Watts Voice Coil Diameter: 2" Voice Coil Wire: 4-Layer High-Temperature Copper Magnet Configuration: Double-Stacked Magnet Xmax: 14 mm (One-Way Linear) Sensitivity: 80.8 dB (1W/1m) Resonant Frequency (Fs): 45.6 Hz Electrical Resistance (Re): 5.94 Ohms Qms: 5.2248 Qes: 0.6170 Qts: 0.5518 Equivalent Volume (Vas): 6.419 L Moving Mass (Mms): 105.65 g Compliance (Cms): 0.11 mm/N BL: 17.064 T·m Inductance (Le): 5.34 mH Effective Cone Area (Sd): 344.8 cm² Displacement: 0.07 cu. ft. Mounting Depth: 4.98" Outside Diameter: 8.5" Cutout Diameter: 7.25" Motor Diameter: 6.37" Recommended Sealed Enclosure: Not Recommended Recommended Ported Enclosure: 0.65 cu. ft. Recommended Port Tuning: 35 Hz Recommended Port Area: 9 sq. in. 4th Order Sealed Enclosure: 0.25 cu. ft. 4th Order Ported Enclosure: 0.75 cu. ft. 4th Order Port Area: 15 sq. in. 4th Order Port Length: 6" Speaker Quantity: 1 Subwoofer Package Includes 1 × Sundown Audio E-Series v.7 8" Dual 4-Ohm Subwoofer 1 × Owner's/Installation Documentation SKU: SUN-EV78D4 UPC: 8101992210218