B2 Audio Subwoofer Combo 4x RAGE V3 8" with Tru Spec Four-Up Enclosure

• Up to Four B2 Audio RAGE V3 8" Subwoofers (500W RMS Each): High-excursion design delivers strong, controlled bass for multi-subwoofer systems.
• Choice of Dual 2-Ohm or Dual 4-Ohm Voice Coils: Flexible impedance options allow compatibility with a wide range of amplifiers and wiring setups.
• Tru Spec Four-Up Ported Enclosure (35 Hz Tuned): Proper airspace and large port area provide clean, efficient low-frequency performance.
• Built for High-Output Systems: Reinforced MDF construction and non-restrictive port design support reliable performance at higher power levels.

B2 Audio 4x RAGE V3 8" Subwoofer Combo with Tru Spec Four-Up Enclosure

This listing includes:

• (4) B2 Audio RAGE Series V3 8" 500W RMS Subwoofers - Choice of Dual 2-Ohm or Dual 4-Ohm


• (1) Tru Spec Back Vented Prefab Four-Up Ported 8" Subwoofer Enclosure (35 Hz Tuning)

This B2 Audio four-up 8-inch subwoofer combo is built for customers who want serious bass output while keeping a clean, efficient enclosure design. Pairing up to four RAGE Series V3 high-excursion subwoofers with a properly sized Tru Spec back-vented enclosure, this setup delivers strong low-frequency performance with excellent airflow and control.

Each RAGE V3 8" subwoofer is rated at 500W RMS and features a long-excursion suspension, dual 2" copper voice coils, and a heavy ferrite motor designed for clean, reliable output. Customers can choose Dual 2-Ohm or Dual 4-Ohm versions to match a wide range of amplifier configurations.

The included Tru Spec Four-Up enclosure is tuned to 35 Hz and provides 3.50 ft of net internal volume AFTER subwoofer displacement, ensuring proper airspace even when fully loaded with four drivers. A large 52 in port area allows for efficient airflow and reduced port noise at higher output levels, making this enclosure ideal for high-output daily systems and multi-sub builds.

Subwoofer Features (RAGE V3 Series)

• 500W RMS / 1500W peak power handling (each)


• High-excursion design with 13 mm one-way Xmax


• Dual 2" copper voice coils (D2 or D4 options)


• RNPP cone with tall U-shaped surround for durability


• Strong ferrite motor for controlled low-frequency performance


• Wide 10 Hz – 500 Hz frequency response


• Suitable for sealed, ported, or bandpass enclosures

Enclosure Features (Tru Spec Four-Up Ported 8")

• Back-Vented Ported Design Tuned to 35 Hz: Provides strong low-frequency output with smooth airflow.


• True Net Volume After Displacement: 3.50 ft internal volume calculated after subwoofer displacement for accurate performance.


• Large Non-Restrictive Port Area: 52.00 in port area reduces turbulence and port noise at high output levels.


• Subwoofer-Specific Design: Proper airspace and cutout sizing for consistent performance with 8" subwoofers.

Enclosure Specifications

• Material Thickness: 0.75"


• Net Internal Volume: 3.50 ft (after subwoofer displacement)


• Tuning Frequency: 35 Hz


• Port Area: 52.00 in


• Cutout Diameter: 7.45"


• Flush Trim Diameter: 9.00"

External Dimensions (L x W x H):

• 34.00" x 14.00" x 22.00"