- Complete bass package with sub and box: includes Sundown X-8 V4 8 inch subwoofer and matched birch ported enclosure for optimized performance right out of the box
- 1250W RMS high output performance: delivers deep, powerful bass from a compact setup built for daily drivers and SPL systems
- High excursion 19mm xmax design: moves serious air for low, hard-hitting bass that stays controlled at high volume
- Dual 2 or 4 ohm wiring flexibility: choose the configuration that matches your amplifier for maximum efficiency and output
- Premium birch ported enclosure: stronger and tighter than standard MDF boxes, tuned for deep bass and clean response
Sundown X-8 V4 8" 1250W RMS Dual 2 or 4 Ohm Subwoofer w/ Birch Ported Box
This Listing Includes:
- (1) Sundown Audio X-8 V4 8" Subwoofer (Dual 2 Ohm or Dual 4 Ohm)
- (1) Adire Audio Single 8" Birch Ported Enclosure (X Series V3/V4 Compatible)
This combo takes the guesswork out of your build and drops you straight into clean, hard-hitting bass.
The Sundown X-8 V4 is one of the hardest-hitting 8-inch subwoofers in its class, pushing 1250 watts RMS with impressive low-end extension thanks to its high-excursion design and powerful triple-stacked motor.
Paired with a precision-built Adire Audio birch enclosure, this setup is tuned to bring out deep, controlled bass without sacrificing output. The enclosure is built from high-quality birch plywood for strength and sound quality, giving you a tighter response and better durability than standard prefab boxes.
Perfect for compact systems, daily drivers, or tight-space builds that still demand real output.
Shipping Disclosure (Sundown):
Please note that the subwoofer and enclosure are shipped separately and may arrive at different times. Rest assured, both items will be carefully packaged and sent directly to you for a seamless setup experience.
Features:
- 1250W RMS high-output 8-inch subwoofer
- dual 2 or 4 ohm options for flexible wiring
- high excursion design with 19mm xmax
- triple-stacked motor for strong output and control
- Birch ported enclosure tuned for deep bass
- compact design with serious low-end performance
- pre-wired box for easy installation
Specifications:
Sundown Audio X-8v4 8" Subwoofer:
- RMS Power Handling: 1250W
- Peak Power Handling: 2500W
- Nominal Impedance: Dual 2 Ohm or Dual 4 Ohm
- DC Resistance (Re): 6.0 Ohm
- Voice Coil Diameter: 2.5"
- Sensitivity (1W/1m): 79.8 dB
- Xmax (One-Way): 19mm
Adire Audio Single 8" Birch Ported Enclosure (AABE-SA-Xv3-S8-RD):
- Net Enclosure Volume: 1 cubic foot
- Tuning Frequency: 34 Hz
- Port Area: 13.5 sq inches
- Subwoofer Cut-Out Diameter: 7.36"
- Construction Material: 3/4 inch (18mm) plywood with 13-ply birch veneer
- Baffle Thickness: 1 inch (24mm)
- Finish: Gray-stained
- Pre-Wired: Metal binding post for easy subwoofer connection
Dimensions:
Enclosure
- Height: 11.5"
- Width: 25"
- Depth: 12.0"
Subwoofer
- Outside Diameter: 8.71"
- Cutout Diameter: 7.32"
- Mounting Depth: 7.56"
- Motor Diameter: 6.88"
- Driver Displacement: 0.13 cu ft
SHIPPING NOTE:
Subwoofer and enclosure ship separately and may arrive at different times.
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.
