Audison AF bit Plug and Play T-Harness for BMW 688 Harman/Kardon Systems - AFBMW-BOOSTER 01

Audison AFBMW-BOOSTER 01 AF bit Plug and Play T-Harness for BMW 688 Harman/Kardon Systems

The Audison AFBMW-BOOSTER 01 is a dedicated Plug & Play T-harness designed to integrate Audison Forza amplifiers with BMW vehicles equipped with the 688 Harman/Kardon OEM sound system. Specifically engineered for BMW Sound System 688 and RAM applications,¹ it gives BMW owners and car-audio installers a purpose-built connection for upgrading the factory system with Audison electronics. Its application-specific design addresses the signal path of this OEM audio platform rather than treating it as a generic amplifier installation.

Within this BMW system, a dedicated OEM booster amplifier powers only the underseat woofers. The cable creates a seamless link between that booster and Audison electronics through OEM-grade Plug & Play connectors. This non-invasive approach avoids changes to the original wiring, maintains system integrity, and preserves factory functions and vehicle-network communication. The factory booster stays in place as part of the vehicle network,² while optimized signal routing supports safe, reliable integration with Audison Forza amplifiers.

The AFBMW-BOOSTER 01 also accommodates several specified upgrade paths for compatible 688 RAM systems. It can be used with Audison AF BMW ReAMP3 for a full-system upgrade, or with the F4IN input expansion card and AF M1.7 bit when adding a subwoofer. For another subwoofer integration route, the harness supports hardwire installation with Connection SLi 2.3 or another interface device capable of handling 26 V+ signals. Plug-and-play compatibility with the F4IN card in Audison AF amplifiers further supports a tailored installation, while channel-specific ART operation should be considered during system planning.³

Features

• BMW Sound System 688 and RAM Integration
  Provides an application-specific connection for the compatible BMW OEM audio platform.
• OEM-Grade Plug & Play Connectors
  Installs without cutting or altering the vehicle's original wiring.
• Factory Function Preservation
  Maintains OEM operation and communication with the vehicle network.
• Optimized Signal Routing
  Directs signals for dependable Audison Forza amplifier integration.
• F4IN Input Expansion Compatibility
  Connects directly with the F4IN card used in Audison AF amplifiers.
• 26 V+ Device Connection
  Allows hardwire installation with SLi 2.3 and other compatible high-level interfaces.
• AF BMW ReAMP3 Upgrade Support
  Enables the specified full-system upgrade configuration for 688 RAM systems.
• F4IN and AF M1.7 bit Subwoofer Configuration
  Supports adding a subwoofer through the designated Audison component combination.
• 26 V+ Subwoofer Interface Option
  Accommodates Connection SLi 2.3 or another 26 V+ capable device for subwoofer additions.

Footnotes:

¹ Not compatible with vehicles featuring door woofers and a trunk subwoofer, such as the BMW i4 G26, or four underseat woofers, such as the BMW iX.

² The OEM booster remains installed and connected to the vehicle network.

³ ART (Automatic Remote Turn-on) is not active on woofer channels, but functions on all other channels of the RAM module.