Sundown Audio SUN-EV78D2 E-Series v.7 8" 400W RMS 2-Ohm Dual Voice Coil Subwoofer
| SKU | SUN-EV78D2 |
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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 2-Ohm voice coil configuration provides flexible wiring options, allowing a single subwoofer to be wired to a 1-Ohm or 4-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 2-Ohm Voice Coil – Provides flexible wiring options, including 1-Ohm or 4-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: EV78D2
- Series: E-Series v.7
- Subwoofer Size: 8"
- Subwoofer Type: Standard Subwoofer
- Voice Coil Configuration: Dual 2 Ohm
- Recommended Final Impedance: 1 Ohm or 4 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: 83.2 dB (1W/1m)
- Resonant Frequency (Fs): 46.2 Hz
- Electrical Resistance (Re): 4.02 Ohms
- Qms: 6.1472
- Qes: 0.5617
- Qts: 0.5147
- Equivalent Volume (Vas): 5.898 L
- Moving Mass (Mms): 111.85 g
- Compliance (Cms): 0.11 mm/N
- BL: 15.256 T·m
- Inductance (Le): 3.95 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 2-Ohm Subwoofer
- 1 × Owner's/Installation Documentation
SKU: SUN-EV78D2
UPC: 810199221014
Free shipping is available within the 48 U.S. states. Orders placed before 11 PM ET are typically processed the next business day and arrive within 5–8 business days. Tracking information will be provided as soon as your order ships.
Need to make a change to your order? Contact us within 24 hours of purchase, and we'll be happy to help. Please note that orders already processed for shipment cannot be canceled.
1-Year Limited Warranty: As an authorized dealer, we provide a 1-year limited warranty covering manufacturer defects in materials and workmanship under normal use. The warranty does not cover physical damage, misuse, improper installation, or normal wear and tear.
Customer Support : 9:00 am to 5:00 pm
Email: info@eliteautogear.com
For technical support questions, contact us at cs@eliteautogear.com
Phone: (877)-215-8187
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See what enthusiasts are saying — straight from their builds
Low End You Can Feel
Bass Built for Daily Driving and Competition
Controlled Low End
Designed for tight, repeatable bass rather than one-note boom, so basslines and kick drums stay separate.
Built to Take Power
Voice coil, spider and cone materials are matched to the rated RMS so the sub handles sustained output.
Match the Enclosure
Performance depends on the box. Sealed for accuracy, ported for output. See the specs for recommended volume and tuning.
Wire It Right
Coil configuration decides your final impedance. Match it to a load your amplifier is stable at before wiring.
