Rebec WB9 Active Spare Tire Subwoofer

Powerful Bass Enhancement Without Sacrificing Cargo Space

The Rebec WB9 is an active spare tire subwoofer designed for drivers who want deeper, fuller bass while preserving valuable luggage space. Installed neatly inside the vehicle’s spare wheel well, the WB9 provides an elegant low-frequency upgrade solution that remains virtually invisible while delivering a noticeable improvement in bass performance.

Combining a dedicated 9-inch woofer, integrated amplifier, and space-efficient design, the WB9 offers an ideal balance between practicality and sound quality.

Sound Performance

• Effective low-frequency compensation
• Sufficient bass quantity and presence
• Deep and controlled bass extension
• Improved musical foundation
• Better overall system balance
• Enhanced listening enjoyment

The WB9 is designed to supplement the low frequencies often missing from factory audio systems, allowing music to sound fuller, richer, and more satisfying.

Key Features

Spare Tire Installation Design

One of the biggest advantages of the WB9 is its ability to fit directly into the spare wheel compartment.

This unique installation approach allows users to enjoy improved bass performance without sacrificing usable cargo space or altering the practicality of the vehicle.

Dedicated 9-Inch Woofer

The WB9 utilizes a dedicated 9-inch subwoofer driver engineered to provide strong low-frequency reinforcement while maintaining excellent control and musicality.

The result is bass that feels both powerful and natural.

Built-In Amplifier

With 300W RMS power and 500W maximum output capability, the integrated amplifier provides ample energy for dynamic bass reproduction while keeping installation straightforward and convenient.

Space-Saving Audio Upgrade

Unlike traditional enclosure subwoofers that occupy trunk space, the WB9 remains hidden beneath the cargo floor, preserving the clean appearance and functionality of the vehicle.

Performance Highlights

Many drivers want stronger bass performance but are unwilling to sacrifice luggage capacity for a large subwoofer enclosure.

The WB9 solves this problem by utilizing unused space within the spare tire well, providing meaningful bass enhancement while maintaining the practicality of the vehicle.

Its ability to deliver deep low-frequency extension and sufficient bass output makes it an excellent upgrade for daily driving and OEM audio systems.

Designed for Modern Vehicles

The WB9 is particularly suitable for users seeking a clean and discreet bass upgrade.

Whether paired with a factory head unit, DSP processor, or aftermarket amplifier system, the WB9 provides low-frequency reinforcement that improves the overall musical experience without requiring extensive modifications.

Technical Specifications

• Subwoofer Type: Active Spare Tire Subwoofer
• Woofer Size: 9″
• RMS Power: 300W
• Maximum Power: 500W
• Frequency Response: 20Hz–150Hz
• Signal-to-Noise Ratio: >90dB
• THD: <1.0%
• High-Level Input Sensitivity: 1V
• Low-Level Input Sensitivity: 0.4V
• Low Pass Filter: 50Hz–150Hz
• Bass Boost: 0 to +12dB
• Subsonic Filter: 20Hz
• Body Size: 360 × 348 × 145mm
• Recommended Installation Position: Spare Tire Well

Summary

The Rebec WB9 is a compact active spare tire subwoofer engineered to provide effective low-frequency compensation, deep bass extension, and improved musical enjoyment without occupying valuable cargo space. Featuring a dedicated 9-inch woofer, integrated amplifier, and discreet spare tire installation design, the WB9 offers a practical and highly effective bass upgrade solution for modern vehicles.