Cerwin-Vega VS12SH 12" Passive Spare Tire Subwoofer

The Cerwin-Vega VS12SH is a passive spare-tire subwoofer system designed to add low-frequency output without taking up conventional cargo-area space. It mounts in the spare-tire well, making it a practical option for vehicles where a box enclosure would limit usable trunk room. An external amplifier is required because this is a non-amplified subwoofer.

This model is intended for drivers who want to improve bass response while retaining a discreet, space-conscious installation. Its slim enclosure format is suited to many cars, trucks, and SUVs with accessible spare-tire storage. The design lets the subwoofer remain integrated with the vehicle rather than occupying the main cargo floor.

With 300 watts RMS and 600 watts maximum power handling, the VS12SH is built for a properly matched external amplifier. Its dual 4-ohm voice-coil configuration gives an installer wiring flexibility when planning a compatible mono amplifier setup. The specified 20 Hz to 500 Hz frequency response supports low-end reinforcement for a full-range car audio system.

The enclosure uses a shallow form factor with a 14.2-inch mounting diameter and 4.7-inch mounting width. Cerwin-Vega specifies a treated-paper cone, rubber surround, stamped-steel basket, ferrite magnet, and 4-inch voice coil. These components are housed in a spare-tire-oriented enclosure intended for a concealed installation.

The VS12SH can complement either a factory audio system with the appropriate integration equipment or an aftermarket receiver and amplifier system. Because it is passive, amplifier selection, signal integration, wiring, and final tuning remain part of the overall installation plan. This makes it suitable for system upgrades where preserving trunk space is a priority.

Key Features

• Passive Spare-Tire Design: Installs in the spare-tire well and requires an external amplifier.
• Space-Conscious Format: Uses the spare-tire area instead of a conventional trunk enclosure.
• 300W RMS Handling: Supports a properly matched amplifier for sustained bass output.
• Dual 4-Ohm Voice Coils: Provides wiring flexibility for compatible amplifier configurations.
• 20 Hz–500 Hz Response: Covers low-frequency bass reinforcement for vehicle audio systems.
• Shallow Enclosure Profile: Measures 14.2 inches in diameter and 4.7 inches wide.

Design & Installation

The VS12SH uses a treated-paper cone with a rubber surround, stamped-steel basket, ferrite magnet, and 4-inch voice coil. Its spare-tire enclosure is specified with solid, non-resonant die-cast construction. The compact circular design is made to sit within the spare-tire area rather than in the main cargo space.

Before purchase, measure the spare-tire well, spare-tire orientation, center-mount arrangement, and available vertical clearance. The manual describes 8 mm and 10 mm mounting bolts, plus a replacement ABS fixing nut for certain Audi/VW-style spare-tire retainers. Connect the supplied-style speaker wiring harness at the enclosure handle area and use a correctly configured external amplifier; professional installation is recommended by the manufacturer for optimal performance.