- 750W RMS POWER HANDLING: Sundown Audio U-Series 8-inch subwoofer rated for 750 watts RMS and 1500 watts peak, built for compact high-output car audio systems.
- SELECT DUAL 2-OHM OR DUAL 4-OHM: Choose the D2 or D4 version to match your amplifier and preferred wiring configuration. Includes one selected U-8 subwoofer.
- 18MM XMAX FOR DEEP BASS: Delivers 18mm of one-way Xmax at 70% BL for strong low-frequency output and controlled excursion.
- ADVANCED COOLING AND LOW DISTORTION: Features a 2.25-inch aluminum voice coil former, high-temperature copper voice coil wire, rear gap venting, top-plate cooling channels, and an aluminum shorting ring cap.
- BUILT FOR SMALL PORTED ENCLOSURES: Heavy-duty cast aluminum basket, double-stitched surround, spring-loaded terminals that accept up to 8-gauge wire, and stitched-on heavy-duty tinsel leads support demanding daily-driver builds.
Sundown Audio U-Series 8" 750W RMS Dual 2 or 4 Ohm DVC Subwoofer U-8
This Listing Includes:
- (1) Sundown Audio U-Series 8" Subwoofer
The Sundown Audio U-Series 8" subwoofer delivers serious output and deep excursion from a compact platform. Rated for 750 watts RMS, the U-8 is built around a 2.25-inch aluminum voice coil former, high-temperature copper voice coil wire, a heavy-duty cast aluminum basket, and a highly ventilated motor design to support demanding car audio systems.
Designed for small ported enclosures, the U-8 combines an 18mm one-way Xmax with a solid pole featuring vent channels, rear gap venting, top-plate cooling channels, and an aluminum shorting ring cap. Double-stitched surround construction, spring-loaded terminals that accept up to 8-gauge wire, and heavy-duty stitched tinsel leads provide the durability needed for powerful daily-driver and compact high-output builds.
Features:
- 8-inch U-Series subwoofer
- 750 watts RMS power handling
- 1500 watts peak power handling
- Available in Dual 2-Ohm or Dual 4-Ohm voice coil configurations
- 18mm one-way Xmax measured at 70% BL
- Custom 2.25-inch aluminum voice coil former
- High-temperature copper voice coil wire
- Double-stitched surround
- Heavy-duty cast aluminum basket
- Solid pole with vent channels and aluminum shorting ring cap
- Rear gap venting and top-plate cooling channels
- Spring-loaded terminals accepting up to 8-gauge wire
- Stitched-on heavy-duty tinsel leads
- Optimized for small ported enclosures
Technical Specifications:
- Speaker Size: 8 inches
- RMS Power Handling: 750 watts
- Peak Power Handling: 1500 watts
- Voice Coil Diameter: 2.25 inches
- Voice Coil Former: Aluminum
- Voice Coil Wire: High-Temperature Copper
- Xmax: 18mm one-way at 70% BL
- Recommended Enclosure Type: Small Ported
U-8 D2 Specifications:
- Voice Coil Configuration: Dual 2 Ohm
- Re: 3.8 Ohms
- Fs: 39.387 Hz
- Vas: 6.345 L
- Qes: 0.412
- Qms: 2.474
- Qts: 0.353
- BL: 20.00 N/A
- Mms: 175.340g
- Cms: 93.125 uM/N
- Sensitivity: 81.6 dB @ 1W/1M
U-8 D4 Specifications:
- Voice Coil Configuration: Dual 4 Ohm
- Re: 6.34 Ohms
- Fs: 41.288 Hz
- Vas: 6.970 L
- Qes: 0.519
- Qms: 2.542
- Qts: 0.431
- BL: 21.45 N/A
- Mms: 145.239g
- Cms: 102.308 uM/N
- Sensitivity: 81.6 dB @ 1W/1M
Important Power Rating Notice:
Sundown Audio has updated its published subwoofer power ratings to better reflect real-world performance. During this transition, some product packaging may display earlier ratings. This U-Series 8" subwoofer carries the current published rating of 750 watts RMS and 1500 watts peak. Product performance remains consistent with Sundown Audio’s current specifications.
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
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International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
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- 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.
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- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
