• 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)