Cadence Pro Car Audio 8" 250 Watt RMS 4-Ohm Dual Voice Coil Subwoofer UD8D4

• Wire it to 2 ohms for maximum power or 8 ohms for multi-speaker setups, giving you full control over your system’s performance.
• Delivers 250W RMS and 500W peak power with a 7mm Xmax, producing deep, accurate, and powerful low-end frequencies.
• Reinforced ultra-stiff pressed paper cone and high-excursion butyl rubber surround ensure strength, clarity, and long-term reliability.
• Performs beautifully in sealed or ported boxes—tight and clean in 0.47 cu ft sealed, or deep and full in 0.81 cu ft ported setups.
• Bold orange surround with smooth black cone and cast aluminum frame makes this 8" sub both a visual highlight and a serious performer.

Cadence Pro Car Audio 8" 250 Watt RMS 4-Ohm Dual Voice Coil Subwoofer UD8D4

This Listing Includes:

• (1) Cadence UD8D4 8" Subwoofer

The Cadence UD8D4 from the Ultra Drive Series blends art and engineering into a compact powerhouse of sound and style. Its vivid orange surround and smooth black cone create a bold visual contrast that commands attention, while its refined construction delivers the deep, musical bass Cadence is known for. This 8-inch subwoofer is more than just a speaker—it’s a statement of precision, design, and passion for performance.

Featuring dual 4-ohm voice coils, the UD8D4 offers versatile wiring flexibility for any setup. Wire it to 2 ohms for maximum output and thunderous low-end response, or to 8 ohms for a balanced, multi-speaker configuration. Whether your goal is heart-pounding impact or smooth system integration, the UD8D4 adapts effortlessly to your build.

Specifications:

• Application Type: Car


• Size & Type: 8"


• Power Handling: 250W RMS / 500W Peak


• Frequency Response: 38 - 500 Hz


• SPL @ 1w/1m: 92 dB


• Impedance: Dual 4 Ohm


• Voice Coil: Dual 4 Ohm


• Cone: Reinforced Ultra-Stiff Pressed Paper


• Surround: High Excursion Butyl Rubber


• Basket: Cast Aluminum


• Magnet: Cast Aluminum Magnet Heatsink


• Xmax: 7 mm


• VAS: 8.19L


• FS: 51.32 Hz


• QTS: 0839

Dimensions:

• Cutout Diameter: 7.24" (184 mm)


• Mounting Depth: 5" (127 mm)


• Ideal Sealed Box Volume: 0.47 cu ft (13.31 L)


• Ideal Ported Box Volume: 0.81 cu ft (22.94 L)


• Port Diameter: 3" (76.2 mm)


• Port Length: 5" (127 mm)

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
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• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

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.