Audix CBLM307 - Shielded CAT7 Interface Cable for M3 Microphone (7 meters)
The Audix CBLM307 is a high-performance interface cable specifically designed to ensure maximum signal integrity in professional audio installations. This 7-meter (23-foot) CAT7 cable is not a conventional network cable; it has been optimized by Audix to carry balanced analog audio signals, serving as the vital link between the Audix M3 (Tri-Element) ceiling microphone system and its junction box or compatible DSP interfaces such as the Audix DN43.
In corporate, educational, or conference environments where voice clarity is critical, cabling is often the weakest link. The CBLM307 solves this with a robust construction of four individually shielded twisted pairs (S/FTP). This advanced design virtually eliminates crosstalk between the three microphone channels traveling simultaneously over the same cable, and also provides exceptional immunity to radio frequency interference (RFI) and electromagnetic interference (EMI) from lighting, Wi-Fi, or overhead electrical systems.
Safety and regulatory compliance are paramount in this design. The cable features a Plenum-rated (LSZH - Low Smoke Zero Halogen) jacket, making it suitable for installation in plenum spaces (suspended ceilings) without the risk of emitting toxic fumes in the event of a fire. Its termination with high-quality RJ45 connectors and brass housing ensures a hermetic seal and a solid mechanical connection with the microphone's JBM3 junction box, guaranteeing a durable and maintenance-free installation.
Main features
-
Optimization for Analog Audio: Specifically designed to carry the signals from the three elements of the M3 microphone without loss of quality or signal mixing between channels.
-
Professional Grade Shielding: CAT7 structure with twisted pairs and individually shielded for total rejection of ambient electrical noise.
-
Plenum Rated Cover: LSZH (low smoke zero halogen) cladding that meets the stringent fire safety codes for commercial roof installations.
-
Robust RJ45 Connectivity: Facilitates a quick and secure "click" connection, eliminating the need for complex high-rise soldering or the use of multiple bulky XLR cables.
-
Versatile Length: Its 7 meters allow ideal flexibility to place the microphone in the center of the room and carry the signal to the wall or floor box without splices.
Benefits for the installer and the user
For the systems integrator , the CBLM307 dramatically simplifies the workflow. Instead of running three separate microphone cables and dealing with soldering at the top of a ladder, this cable allows for an immediate plug-and-play connection between the microphone and the breakout interface. This reduces labor time and minimizes wiring errors.
For the end user , the benefit is crystal-clear, quiet audio. By protecting the low-level analog signal at the source, the hum and static that often ruin video conferences are eliminated, ensuring that every word captured by the M3 microphone reaches the audio processor with complete fidelity.
Use cases
-
Videoconference Rooms: Clean and hidden connection of the M3 ceiling microphone to the audio interface or DSP in the rack.
-
Auditoriums and Hybrid Classrooms: Secure signal transmission through false ceilings with high electrical interference from LED lighting or projectors.
-
Operating Rooms and Clean Rooms: Where cabling is required that complies with strict safety regulations and non-toxic materials.
-
Dante/AES67 Systems: Perfect physical link to interfaces such as the Audix DN43 to convert the M3's analog signal to the digital domain.
Frequently Asked Questions
-
Can I use a standard CAT7 network cable instead?
Although it might physically fit, it is not recommended. The CBLM307 is certified to maintain the integrity of the analog audio signal (mic level) and ensure the correct pin-to-pin shielding required by the M3 system to prevent ground noise.
-
Does this cable transmit digital data or internet?
No, in this specific application, it is used to transmit 3 channels of balanced analog audio by taking advantage of the cable's twisted-pair infrastructure.
-
Is it compatible with other microphones?
It is designed exclusively for connecting the Audix M3 microphone (and its variants) due to its specific pinout for handling all three elements of the microphone simultaneously.
-
What do I do if I need more length?
Audix offers this cable in different lengths (such as the CBLM3100 for bulk reels), but it is recommended to avoid splicing to maintain the integrity of the shielding.
Project description
This 7-meter (7-meter) Category 7 (CAT7) shielded interface cable is specifically designed for multi-channel balanced analog audio transmission. It features four individually shielded twisted pairs (S/FTP) with a Plenum LSZH (Low Smoke Zero Halogen) rated jacket for compliance with suspended ceiling safety regulations. Terminated with shielded male RJ45 connectors with brass housings to ensure ground continuity, it is optimized for exclusive use with the Audix M3 three-element ceiling microphone system and its associated interfaces, guaranteeing RFI/EMI immunity and zero crosstalk.
