Descriptions

About: Alpine W-SB12V Single 12" 250W RMS Loaded Subwoofer Enclosure

Bully the competition with the Alpine W-SB12V Bass Series Wedg-E Enclosure, built to deliver hard-hitting bass with authority.

Bass that Hits Hard

No competition here—the Alpine W-SB12V “Wedg-E” Enclosure is built to outmuscle typical subwoofer boxes. Using a proven Bass Series 12" subwoofer and an intentionally engineered vented enclosure, it delivers a powerful punch of bass. This optimized design allows the system to hit hard without fear of overdriving the subwoofer, giving you aggressive, controlled bass performance.

Optimized Enclosure Design

The W-SB12V’s wedge design isn’t just about fit, it’s about force. Built to align with rear seat angles, it maximizes usable space while delivering powerful bass into the cabin. The angled enclosure helps reduce internal sound wave interference, keeping output tight and controlled. It’s a compact design that hits with authority while making efficient use of your available space.

Precision-Tuned Vented Enclosure

The W-SB12V features a precision-tuned vented design with a curved port engineered for maximum airflow and efficiency. The result is deeper bass extension, increased output, and strong performance under pressure. With optimized internal volume and tuning, the Wedg-E is built to deliver consistent, hard-hitting bass every time you turn it up.

Features:

• Preloaded with Alpine W12S4 12” Bass Series subwoofer
• High-output vented wedge enclosure design
• Engineered to hit hard with deep, aggressive bass
• Polypropylene/mica cone with poly-foam surround
• Optimized ported enclosure for airflow efficiency
• Wedge shape for flexible vehicle fitment
• Durable MDF construction with premium black carpet
• Signature embroidered Alpine logo
• Compatible with KTE-12PG protective grille
• Recommended with Alpine S2-A60M mono amplifier

Specifications:

• Subwoofer: 12” Bass Series (W12S4)
• Voice Coil: 4Ω Single Voice Coil
• Power Handling: 250W RMS / 750W Peak
• Frequency Response: 22Hz – 200Hz
• Sensitivity: 88dB
• Enclosure Type: Vented (Ported)
• Enclosure Dimensions: 17.5” W × 20.5” D × 17.5” H
• Enclosure Weight: 44lbs
• Enclosure Volume (Vas): ~44L
• Construction: MDF with carpet finish
• Grille Compatibility: KTE-12PG

What's in the Box:

• Ported enclosure loaded with one W12S4 12" subwoofer
• QR Code for manual download
• Product registration card
• Warranty information