Sennheiser MEB 104-L G Cardioid Boundary Microphone with LED Ring (Nextel Grey)

Discreet Nextel Grey Flush-Mount Audio with Status Light: Sennheiser MEB 104-L G

The Sennheiser MEB 104-L G is a premium installed boundary layer microphone in an architectural Nextel Grey finish, designed to integrate seamlessly into high-end conference tables, executive desks, and acoustic ceiling tiles.

Equipped with Sennheiser’s proven cardioid condenser capsule, the MEB 104-L G is specifically tuned for articulate speech pickup in acoustically reflective corporate and educational environments. Its directional pickup pattern isolates the speaker’s voice while suppressing background table noise, HVAC hum, and room echo. The integrated bi-color LED status ring gives presenters clear visual feedback (such as Mute/Active status) controlled by external media control systems or logic switches. Available now in our Sennheiser pro audio store catalog, this Nextel Grey boundary mic combines architectural elegance with broadcast-grade audio precision.

Key Features & Pro-Level Advantages

• Cardioid Boundary Pickup Pattern: Delivers direct acoustic focus, suppressing off-axis room reverberation and surface-reflected mechanical noise.
• Architectural Nextel Grey Finish: Non-reflective, modern grey housing engineered to complement modern wood grain, glass, and stone conference surfaces.
• Bi-Color LED Status Ring: Provides visual feedback (Red/Green) driven by TTL logic signals for seamless integration with DSP systems or logic controllers.
• Flush Surface Installation: Mounts flush into surfaces using a threaded M20 shank, extending just 19 mm above the table or ceiling for an ultra-discreet profile.
• 5-Pin XLR Connector: Transmits balanced audio output and logic signal control for the bi-color LED status light over a single XLR-5 line.
• Full Speech Frequency Spectrum (40 Hz – 20 kHz): Captures natural vocal warmth and speech articulation with pristine clarity.
• RF Shielding & Heavy-Duty Build: High immunity against mobile phone interference and radio frequency noise in active corporate environments.

Key Technical Specifications

• Device Type: Installed Boundary Layer Microphone with LED Status Ring

• Transducer Principle: Pre-polarized Electret Condenser

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• Polar Pattern: Cardioid

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• Frequency Response: 40 Hz – 20,000 Hz

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• Sensitivity: 14 mV/Pa

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• Nominal Impedance: 200 Ohms (at 1 kHz)

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• Maximum Sound Pressure Level (SPL): 125 dB SPL

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• Equivalent Noise Level: 28 dB(A)

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• Dynamic Range: 97 dB(A)

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• Connector: 5-pin XLR Male (XLR-5M: Audio +/-/GND + LED Green/Red control)

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• LED Status Control: High level > 2.4 V (Green), Low level < 0.4 V (Red)

• Phantom Power Requirements: 24 V – 48 V DC

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• Current Consumption: 6 mA

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• Mounting Thread: M20 threaded barrel

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• Dimensions: Overall height 90 mm (19 mm above surface), Diameter 28.5 mm

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• Weight: Approx. 60 g (2.12 oz)

• Color / Finish: Nextel Grey (G)

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Compatibility & System Integration

• Installation & Surface Mounting: Installs through a standard table or ceiling drill hole using the included M20 thread, hex nut, and rubber isolation rings to isolate structural vibration.

• DSP & Logic Controller Integration: Connects directly to digital signal processors (DSPs) such as Biamp, Q-SYS, Symetrix, or the Sennheiser MAS 133 in-line logic box via its 5-pin XLR output to control LED light switching.

• Powering: Powered by standard 24V–48V phantom power from audio consoles, DSP processors, or PoE audio endpoints.

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• Box Contents: 1x Sennheiser MEB 104-L G boundary microphone (Nextel Grey), 2x Rubber mounting isolation rings, 1x Mounting hex nut.

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• System Expansion: Explore matching DSP logic switches, boundary mics, and installation hardware on our Sennheiser Brand Store.