- COMPLETE HIGH-OUTPUT 15" BASS PACKAGE: Includes the Sundown Audio X Series V4 15" 2000W RMS subwoofer paired with a custom-tuned Adire Audio birch ported enclosure engineered for deep bass extension, powerful low-frequency response, and impressive overall output.
- EXTREME POWER & HIGH EXCURSION PERFORMANCE: The Sundown Audio X Series V4 15" subwoofer handles 2000 watts RMS and 4000 watts peak power while utilizing a massive triple-stacked motor structure and high-excursion suspension for clean, aggressive bass performance under demanding conditions.
- CUSTOM-TUNED BIRCH PORTED ENCLOSURE: Built from durable 24mm birch plywood and specifically designed for Sundown Audio X Series subwoofers, this enclosure features 4.25 cubic feet of net airspace, 60 square inches of port area, and a 30Hz tuning frequency for optimized low-end output and efficiency.
- DEEP, CLEAN, AND POWERFUL LOW FREQUENCIES: Designed for high-output daily systems and serious bass enthusiasts, this combo delivers tight musical bass response with strong SPL capability for rap, rebassed music, EDM, demos, and other bass-heavy listening styles.
- PREMIUM CONSTRUCTION & EASY INSTALLATION: Enclosure includes a pre-wired metal terminal cup for simplified setup while the heavy-duty birch construction helps reduce enclosure flex, improve durability, and maintain consistent bass performance over time.
Sundown V4 15" 3000W RMS D1 or D2 X Series Subwoofer Single 15" Birch Ported Box
This Listing Includes:
- (1) Sundown Audio X Series V4 Dual 1-Ohm or Dual 2-Ohm 15" Subwoofer
- (1) Adire Audio Single 15" Birch Ported Subwoofer Enclosure for Sundown Audio X Series V3/V4
Experience deep, powerful low-frequency performance with this expertly matched subwoofer and enclosure combo featuring the Sundown Audio X Series V4 15" Subwoofer paired with a custom-tuned Adire Audio birch ported enclosure. Designed for high-output daily systems and serious bass enthusiasts, this package delivers impressive low-end extension, clean musical response, and extreme output capability.
The Sundown Audio X Series V4 15" subwoofer is engineered for ultra-high excursion, massive power handling, and exceptional durability under demanding conditions. Combined with the precision-designed Adire Audio enclosure, this setup maximizes efficiency, bass response, and overall system performance while maintaining tight, accurate low frequencies.
Shipping Disclosure:
Please note that the subwoofer and enclosure ship separately and may arrive at different times. Both items are carefully packaged to help ensure safe delivery.
Features
- 3000 Watts RMS power handling for extreme bass performance
- 6000 Watts peak power handling capability
- Available in Dual 1-Ohm or Dual 2-Ohm configurations
- Ultra-high excursion suspension design with 30mm Xmax
- Custom-tuned Adire Audio birch enclosure optimized for X Series subwoofers
- Premium birch construction for reduced flex and improved sound quality
- Pre-wired terminal cup for easier installation
- Excellent choice for high-output daily systems and SPL-focused builds
Specifications:
Sundown Audio X Series V4 15" Subwoofer:
- RMS Power Handling: 3000 Watts
- Peak Power Handling: 6000 Watts
- Voice Coil Configuration: Dual 1-Ohm or Dual 2-Ohm
- Xmax: 30mm One-Way Linear Excursion
- Sensitivity: 85.1 dB @ 1W/1m
- Cone Area (Sd): 72.58 in
- Triple-Stacked 9.25" High-Strength Motor Structure
- Motor Diameter: 9.25"
- Driver Displacement: 0.26 Cubic Feet
T/S Parameters (D2):
- Re: 3.74 Ohms
- Fs: 29.51 Hz
- Vas: 40.41 Liters
- Qes: 0.49
- Qms: 4.08
- Qts: 0.44
- BL: 27.44 NA
- Mms: 538.24 Grams
- Cms: 54.02 uM/N
Subwoofer Dimensions:
- Mounting Depth: 12.95"
- Outside Diameter: 15.51"
- Cutout Diameter: 13.93"
- Motor Diameter: 9.25"
Adire Audio Single 15" Birch Ported Enclosure:
- Net Internal Volume: 4.25 Cubic Feet
- Tuning Frequency: 30Hz
- Port Area: 60 Square Inches
- Construction Material: 24mm (1") Birch Plywood
- Durable Exterior Finish
- Pre-Wired Metal Terminal Cup
External Dimensions:
- Height: 18"
- Width: 23"
- Depth: 31.5"
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.
