Audix PLENHSEM3 - Plenum Interface Housing and Cable for M3 Microphone
The Audix PLENHSEM3 is a critical, highly engineered installation component specifically designed for the Audix M3 three-element ceiling microphone series. More than just a cable, this product acts as the connection and sealing interface (housing) that ensures the integrity of the installation in spaces requiring strict fire safety regulations.
This specific kit solves one of the most important challenges in professional audiovisual integration: maintaining an airtight seal in suspended ceilings (plenums). The unit consists of a brass bell housing that screws directly into the Audix JBM3 junction box. Its main function is to allow the microphone cable to pass safely to the internal electronics, ensuring that the RJ45 connection is protected and that the ceiling plenum complies with the CMP (Continuous Plenum Protection) standard.
Ideal for system integrators and audio technicians working in corporate, educational, or government environments, the PLENHSEM3 ensures that the balanced analog audio signal from the microphone's three elements is transmitted without interference or air leakage, providing a clean, aesthetically pleasing, and functionally robust termination.
Main features
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Specific Housing Design: Made of high-strength machined brass to ensure durability and protection against radio frequency interference (RFI).
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Plenum Certification: Designed to create an airtight seal when attached to the JBM3 junction box, meeting fire safety codes for air handling spaces.
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RJ45 Cable Management: Facilitates the correct entry and termination of the M3 microphone signal cable to the internal RJ45 connector, protecting the integrity of the audio twisted pairs.
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Precision Fit: Machined thread specifically designed to ensure a solid mechanical fit and prevent vibrations that may be picked up by the microphone.
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Exclusive Compatibility: Developed exclusively for integration with Audix M3 (M3W, M3G) pendant microphone systems.
Benefits of professional installation
Using the genuine Audix PLENHSEM3 accessory not only ensures compliance with the manufacturer's warranty but also provides complete peace of mind on the job site. By ensuring a proper plenum seal, it prevents issues with building safety inspections. Furthermore, its metal construction acts as an additional Faraday cage at the most vulnerable point of the connection, preserving the purity of the audio signal before it travels through the structured cabling to the DSP or mixer.
Typical use cases
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Corporate conference rooms: Where ceiling aesthetics and fire safety are priorities.
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Government and judicial facilities: Spaces that require strict compliance with building regulations and high-fidelity audio.
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Distance learning classrooms: To secure ceiling microphones in permanent installations above false ceilings.
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Operating rooms and medical environments: Where ceiling sealing is vital for air control and hygiene.
Frequently Asked Questions
Is this a standard Ethernet cable?
No. Although it is used in the context of RJ45 terminating connections within the M3 system, the PLENHSEM3 is the specific housing and cable pass-through assembly for sealing the connection in the ceiling box.
Can I use it with other microphones?
This product is designed exclusively for the geometry and threading of the Audix M3 ceiling microphone system and its associated junction box.
Why is it important that it be "Plenum"?
In many commercial buildings, the space above the suspended ceiling is used for air conditioning return air. The components installed there must not be easily flammable or emit toxic fumes. This fitting ensures that the junction box maintains that integrity.
Project description
Mechanical termination and sealing accessory for ceiling microphone systems. The device consists of a machined brass housing designed to screw into plenum-rated junction boxes, providing a watertight passage for multi-conductor signal cable. Specifically compatible with three-element microphone systems with internal RJ45 termination. Ensures shield continuity and compliance with air handling space regulations.
