Audix CBLM325 - Shielded CAT7 Interface Cable with Plenum Housing for M3 Microphone (25 meters)
The Audix CBLM325 is much more than just a network cable; it's a critical engineering component specifically designed to ensure signal integrity in installations of the acclaimed Audix M3 ceiling microphone system. Measuring 25 meters in length, this Category 7 (CAT7) cable sets the gold standard for transmitting high-fidelity analog audio over network infrastructure, ensuring that the tri-element audio pickup reaches its destination with crystal clarity and free from interference.
In corporate, educational, and government environments, where aesthetics and air quality are paramount, the CBLM325 stands out thanks to its Plenum design. Unlike generic cables, this model features a patented brass housing that screws directly into the M3 microphone junction box, creating an airtight seal essential for meeting fire safety regulations in suspended ceilings. Its robust construction with four twisted pairs and individual shielding protects sensitive audio signals from electromagnetic noise (EMI) and radio frequency interference (RFI), common in modern buildings filled with Wi-Fi technology and electrical wiring.
Main features
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Superior signal integrity: High-performance CAT7 standard optimized to carry balanced analog audio without loss of quality or crosstalk between the tri-element microphone channels.
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Total shielding: Construction with 4 individually shielded twisted pairs (S/FTP) that guarantees immunity against buzzing and external interference.
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Integrated brass housing: Includes a brass housing connector specifically designed to screw into the Audix JBM3 junction box, providing a watertight seal and mechanically secure installation.
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Plenum Certification: LS0H (Low Smoke Zero Halogen) cladding suitable for installation in air handling spaces (plenums) above false ceilings, complying with strict safety standards.
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Professional RJ45 connectivity: High-quality male RJ45 terminations prepared for plug-and-play connection with microphone breakout system.
Benefits of professional installation
For the AV integrator, the Audix CBLM325 eliminates the guesswork and risks associated with field cabling. Using this manufacturer-certified cable avoids common problems like ground loops or parasitic noise that often occur with generic, unshielded CAT5/6 cabling. The 25-meter length provides the flexibility needed to reach the equipment rack or DSP from the center of large conference rooms, while its durable, easy-to-route jacket keeps the installation clean and organized.
Ideal use cases
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Videoconference rooms: Trunk connection from the M3 ceiling microphone to the audio processor in the technical rack.
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Auditoriums and distance education: Installations in high ceilings where a long cable run is required without signal degradation.
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Operating rooms and cleanrooms: Environments that require airtight sealing of ceiling penetrations to maintain air pressure and hygiene.
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Secure government spaces: Where shielding against eavesdropping or external interference is a critical requirement.
Frequently Asked Questions
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Can I use a generic CAT7 cable instead of the CBLM325?
Although it's technically possible to pass audio through other CAT7 cables, the CBLM325 is optimized for audio and, most importantly, includes the threaded brass housing necessary to seal the M3 junction box (plenum). Without this part, the installation might not meet air safety regulations.
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Does this cable carry digital data or analog audio?
In the context of the Audix M3 system, this cable is used to carry three channels of balanced analog audio from the microphone to the "breakout" cable that connects to the DSP or mixer.
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Is it compatible with other Audix microphones?
It is specifically designed for the M3 series (M3, M3W, M3G) due to its patented connection system in the roof box.
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Is the cable rigid or flexible?
Being CAT7 with S/FTP shielding, it is more robust and slightly more rigid than a standard network cable, but maintains enough flexibility to be routed through standard cable trays and conduits.
Project description
Supply of 25-meter lengths of shielded CAT7 interface cable, model Audix CBLM325. The cable shall consist of four individually shielded twisted pairs with a halogen-free, low smoke 0 (LS0H) jacket, rated for use in plenum spaces. One end shall incorporate a patented threaded brass bell housing to ensure a hermetic seal when connected to the ceiling microphone junction box. Termination is via high-quality male RJ45 connectors. Specifically designed to guarantee RF immunity and analog signal integrity in the Audix M3 tri-element microphone system.
