Audison Voce II AVBX 12 D4 II Subwoofer Enclosure 12" Passive Sub Box 550w RMS

The Audison VOCE II AVBX 12 D4 II is a compact, ultra-shallow sealed 12-inch (300 mm) passive subwoofer enclosure loaded with the AV 12 D4 II dual 4-ohm driver, rated at 550 W continuous and 1100 W peak. It is for drivers who want tight, accurate, high-end bass in a tight installation space, with a grille included.

Key specifications

• Driver: AV 12 D4 II, 300 mm, dual 4-ohm voice coil
• Power handling: 550 W continuous, 1100 W peak
• Sensitivity: 84.5 dB
• Frequency response: 25 to 400 Hz
• Enclosure: ultra-shallow sealed, 15 mm high-density MDF with internal bracing
• Orientation: 2S² dual orientation, down-firing or up-firing
• Terminal: Sub Smart Plug (SSP) with plug-and-play and push connectors
• Xmax: 16.8 mm
• Grille: included

AVBX 12 D4 II subwoofer box | 300 mm | grille included

The AVBX 12 D4 II is the compact subwoofer enclosure of the VOCE II line, designed to bring high-end low-frequency performance into tight installation spaces without compromise. Its ultra-shallow sealed architecture is engineered to deliver tight, accurate and dynamic bass while preserving valuable in-vehicle space.

Built from high-density 15 mm MDF with internal bracing, the enclosure ensures maximum rigidity and effective damping, eliminating unwanted resonances and coloration. The internal volume and damping are acoustically matched to the AV 12 D4 II subwoofer, which features a dual 4-ohm voice coil for greater wiring flexibility in high-power system configurations.

• Ultra-shallow sealed enclosure: engineered to maximise performance in minimal space, providing tight, articulate bass response while preserving valuable vehicle storage volume.
• High-density 15 mm wooden construction with internal bracing: built using robust MDF panels and strategic internal bracing, ensuring maximum structural rigidity and suppressing unwanted resonances for clean low-frequency output.
• 2S² dual-orientation architecture: allows both down-firing and up-firing installation, offering installation flexibility depending on acoustic goals and available space.
• Sub Smart Plug (SSP) terminal with plug-and-play and push connectors: combines quick-disconnect functionality with traditional push terminals, enabling secure, efficient wiring and hassle-free maintenance.
• Acoustic design matched to VOCE II subwoofers: precisely tuned internal volume and damping ensure integration with the AV 12 D4 II driver for seamless low-frequency performance.
• Space-efficient footprint for OEM integration: designed to fit in a wide range of vehicles, offering an OEM-friendly solution for discreet yet high-performance bass enhancement.

This pairing provides seamless integration and controlled low-end response, even in space-limited applications. Thanks to the 2S² dual-orientation design, the enclosure can be installed in down-firing or up-firing configuration, adapting to available space and acoustic goals.

The Sub Smart Plug terminal combines plug-and-play convenience with traditional push connectors, ensuring fast, secure and high-current-ready wiring. The enclosure's refined styling reflects the visual identity of the VOCE II speaker line, combining performance and elegance in a single, integrated solution.

Compact, precise and ready to perform, the AVBX 12 D4 II is the ideal solution for adding impactful, controlled bass to OEM or custom installations where space is limited but expectations are high.