Description

A purpose‑built overhead acoustic and ceremony module for the Mercedes MFA2 platform (W177 A-Class, X247 GLB, H247 GLA, C118 CLA, W247 B-Class). It replaces the OEM sunglasses holder with dual genuine Burmester tweeters, an auto‑deploy mechanism, an RGB ambient ring, and an engineered passive crossover + damping package—addressing low soundstage height, limited treble air, and lack of perceived luxury in non-flagship trims

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Acoustic Value

Conventional A‑pillar add‑on tweeters widen lateral imaging but fail to lift vertical height. Relocating treble emission centrally overhead creates a vaulted stage: vocals rise above the dash plane; cymbal overtones and breathy harmonics gain airy extension without harshness. The tuned passive network plus level attenuation tames potential 3–5 kHz glare, maintaining clarity and long‑term listening comfort

Genuine Drivers & Tuning

Dual genuine Burmester tweeters (pair-matched for impedance consistency) are lab‑verified via pink noise and sweep measurements. Acoustic foam plus localized damping film suppress cavity resonances; controlled dispersion enlarges the sweet spot to cover both driver and passenger shoulder width

Auto-Deploy Ceremony

Upon ACC activation, the panel glides open in roughly 1.0–1.5 s, synchronizing with cluster wake‑up and ambient light ignition for a multi-channel start sequence. A delayed close on ACC off prevents rapid cycling. Buffered gearing and damping pads absorb terminal impact, eliminating sharp mechanical clicks

Ambient Ring Synchronization

The ambient ring taps into the factory ambient light signal (RGB color follow where available; single color or optional controller for vehicles without ambient package). Surrounding the acoustic aperture, the ring couples light with source localization, reinforcing perceived directionality and premium ambience