Audison APBMW S8-2.2 8" BMW/MINI Underseat Subwoofer

The Audison APBMW S8-2.2 is an 8-inch, 2-ohm underseat subwoofer designed for select BMW and MINI applications. It is intended to replace a factory underseat woofer while using the vehicle's original acoustic enclosure. This approach supports a cleaner OEM-style upgrade without adding a separate subwoofer box to the cabin or cargo area.

Its 200 mm driver is engineered for bass and midbass reproduction from 40 to 500 Hz. With 150 watts continuous power handling and 91 dB sensitivity, it is suited to systems that need stronger low-frequency foundation than the original driver can provide. The 2-ohm design is intended for use with amplification that is stable at a 2-ohm speaker load.

A neodymium magnetic assembly helps keep the driver compact for the shallow underseat location. The design uses an inverted acoustic structure with an internal cone, while the pressed-paper cone and rubber surround are selected for controlled cone movement. A plastic chassis supports the vehicle-specific form factor.

The APBMW S8-2.2 uses a copper voice coil on an aluminum former for heat handling and stability during excursion. Its specified linear excursion is ±7 mm, with 10 mm of mechanical excursion. These characteristics are paired with electroacoustic parameters developed to work with the factory underseat acoustic load.

This subwoofer is a practical option for a BMW or MINI audio upgrade centered on retaining the factory layout. Audison specifically identifies the 2-ohm configuration for active multi-amplified systems, including use with its AP 8.9 bit amplifier. Confirm vehicle fitment, factory-system configuration, and amplifier load capability before installation.

Key Features

• BMW/MINI-Specific Tuning: Designed to use the factory underseat acoustic enclosure.
• 2-Ohm Impedance: Supports higher output from compatible 2-ohm-stable amplifier channels.
• 150 W Continuous Handling: Matches amplified OEM-replacement system upgrades.
• Neodymium Magnet: Provides compact magnetic motor design for shallow installation.
• Pressed-Paper Cone: Works with a rubber surround for controlled driver movement.
• OEM Placement Gaskets: Two 5 mm gaskets are provided for installation positioning.

Design & Installation

The APBMW S8-2.2 combines a plastic chassis, neodymium magnet, pressed-paper cone, rubber surround, copper voice coil, and aluminum former. Its shallow 55.2 mm overall depth and 32 mm mounting depth are tailored to underseat placement. The driver has a 50 mm voice-coil diameter and a 159 mm effective piston diameter.

Use the APBMW S8-2.2 only where the vehicle has a compatible factory underseat woofer location and sufficient clearance. Verify that the amplifier channel is rated for a 2-ohm load and set crossover, level, and DSP tuning appropriately for the rest of the system. The included 5 mm gaskets can be used as needed for OEM-placement fitment.