- 1250W RMS Compact Powerhouse: Delivers serious bass output from an 8 inch subwoofer, perfect for high-performance daily and SPL builds
- Extreme 19mm Xmax Excursion: Deep, controlled low-frequency response with over 2.4 inches peak-to-peak movement
- Dual 2 Ohm System Flexibility: Ideal for wiring to maximize amplifier efficiency in compact high-output systems
- FEA-Optimized Suspension Design: Improved spider and surround for better control, durability, and low distortion at high power
- Triple-Stacked Motor with Shorting Ring: Enhances output, reduces distortion, and maintains clean bass under heavy load
Sundown Audio X Series V.4 8" 1250W RMS Dual 2-Ohm Subwoofer X-8 V.4 D2
This listing includes:
- (1) Sundown Audio X Series V.4 8" Dual 2-Ohm Subwoofer
The Sundown Audio X-8 V.4 D2 redefines what is possible from a standard cutout 8-inch subwoofer. Designed for extreme output in compact systems, this subwoofer delivers 1250 watts RMS and 2500 watts peak, making it a top-tier choice for high-performance daily drivers and competition-grade SPL builds.
The V.4 generation represents a major leap forward from previous X-8 models, featuring a carefully FEA-optimized spider and surround system that dramatically improves linear excursion, control, and reliability at high power levels. With approximately 19mm of linear one-way Xmax and over 2.4 inches peak-to-peak excursion, the X-8 V.4 D2 delivers deep, controlled bass well beyond what most 8-inch drivers can achieve.
At the heart of the subwoofer is a massive triple-stacked motor assembly, paired with a 2.5-inch high-temperature voice coil and a hyper-extended pole design for maximum motor strength and thermal stability. An integrated aluminum magnet ID shorting ring minimizes inductive distortion, ensuring clean, accurate bass even at extreme output levels.
Compatible with sealed, ported, and 4th-order enclosures, the X-8 V.4 D2 is engineered for builders who demand maximum performance from minimal space.
Features
- 1250W rms high output
- 2500W peak power handling
- dual 2 ohm voice coil
- 19mm xmax high excursion
- triple-stacked motor design
- 2.5-inch high-temp voice coil
- fea optimized suspension
- low distortion performance
- compact high-output design
- works in sealed and ported boxes
Specifications – X Series V.4 8" Dual 2-Ohm
- RMS Power Handling: 1250W
- Peak Power Handling: 2500W
- Nominal Impedance: Dual 2 Ohm
- DC Resistance (Re): 3.6 Ohm
- Voice Coil Diameter: 2.5"
- Sensitivity (1W/1m): 80.1 dB
- Xmax (One-Way): 19mm
Thiele & Small Parameters
- Fs: 41.299 Hz
- Vas: 4.126 L
- Qes: 0.436
- Qms: 1.941
- Qts: 0.356
- BL: 21.576 NA
- Mms: 215.153 g
- Cms: 68.389 um/N
Enclosure Recommendations
Sealed Enclosure
- Volume: 0.30 – 0.40 cu ft
Ported Enclosure
- Volume: 0.75 – 1.0 cu ft
- Recommended Tuning: 32 Hz
- Recommended Port Area: 12 – 16 sq in
4th Order Enclosure
- Sealed Side: 0.20 cu ft
- Ported Side: 0.80 cu ft
- Port Area: 16 sq in
- Port Length: 8"
Dimensions
- Outside Diameter: 8.71"
- Cutout Diameter: 7.32"
- Mounting Depth: 7.56"
- Motor Diameter: 6.88"
- Driver Displacement: 0.13 cu ft
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
