Audison APBMW K4M 4" BMW/MINI 2-Way Component Speakers

The Audison APBMW K4M is a 4-inch, two-way component speaker kit engineered for upgrading compatible BMW and MINI factory two-way audio systems. It combines a 100 mm midrange driver with a separate 29 mm tweeter, an inline high-pass crossover, and vehicle-oriented Plug & Play connections. The kit is intended to improve clarity and tonal balance while retaining an OEM-style installation approach.

The 100 mm midrange uses a water-repellent pressed-paper cone, selected for natural midrange reproduction. Its 90 Hz resonance frequency supports high-pass filtering in the 150–200 Hz range when used in a properly configured system. With 50 watts continuous and 100 watts peak power handling, it is suited to factory-system upgrades and appropriately matched aftermarket amplification.

A 29 mm Tetolon-dome tweeter handles the upper-frequency range and is designed for off-axis dispersion in vehicle interiors. The supplied crossover uses a 6 kHz high-pass point with a 6 dB/octave slope for the tweeter. A selectable -3 dB or 0 dB tweeter adjustment helps accommodate placement and listening preference.

Audison uses neodymium magnetic assemblies to keep the components compact, while the midrange employs a 25 mm fiberglass voice coil and an aluminum die-cast basket. The midrange's removable damping motor cover and the water-repellent cone support use in factory-style door locations. Plug & Play connectors are built into the system to simplify integration where the vehicle fitment is compatible.

The APBMW K4M is a practical fit for listeners seeking a BMW/MINI-specific front, rear-deck, or other OEM-location speaker upgrade, subject to vehicle compatibility. A 300 mm extension cable and tweeter support are supplied for installation flexibility and OEM-position placement. Some vehicles may require an optional mounting adapter, so fitment should be checked before ordering.

Key Features

• BMW/MINI Upgrade Design: Developed for compatible factory two-way BMW and MINI audio systems.
• 100 mm Midrange: Compact 4-inch driver fits small-basket OEM-style speaker locations.
• Pressed-Paper Cone: Water-repellent cone supports natural midrange reproduction.
• Tetolon Tweeter: 29 mm dome is optimized for off-axis high-frequency output.
• Inline High-Pass Crossover: Protects and routes high frequencies to the tweeter.
• Plug & Play Connections: Vehicle-oriented connectors simplify compatible installations.

Design & Installation

The APBMW K4M pairs a neodymium motor system with an aluminum die-cast midrange basket to manage space and weight in OEM-oriented installations. Its 25 mm fiberglass midrange voice coil is designed for power handling and rigidity, while the separate tweeter uses a Tetolon dome. The kit also includes a removable damping motor cover, tweeter support, crossover hardware, and a 300 mm extension lead.

Confirm the vehicle's speaker-basket style, factory-system configuration, and available tweeter location before installation. Connect the included crossover between the vehicle wiring and tweeter as directed, then use the supplied extension cable where needed. Certain BMW/MINI models require the optional Audison APBMW A4E adapter for non-standard mounting points; professional installation is recommended when factory trim, door panels, or wiring must be modified.