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Cadac’s MegaCOMMS digital audio network has been designed to meet the requirements of the most challenging applications.

Cadac's MegaCOMMS Protocol

MegaCOMMS allows total through-system propagation delay, from inputs on stage to outputs including all console processing and AD / DA conversions, in 37 samples (@ 96 kHz), or just under 400μs.


MegaCOMMS is a robust, TDM (time division multiplex) system and is clocked at 96 kHz, however SRC (sample rate convertor) is provided for other clock speeds.

Cadac CM-J50 console MegaCOMMS on BNC and optical

Cadac CM-J50's MegaCOMMS interface: A and B ports on either BNC or LC optical.

The protocol provides up to 128 bidirectional channels of 96 kHz / 24-bit audio, along with all control data and clock synchronisation. This is all carried on a pair of coaxial cables (send and return) with runs of up to 150 meters (492 feet) from the console, or up to 2 km (6,561 feet) with optical cables. By combining audio, control, and clock into one single network simplifies connectivity, shortens set-up time and reduces investment in cabling infrastructure.

The CM Series network bridges allow MADI, with the CM-MD64 bridge, and Dante, via the CM-DT64, protocol-based products to be seamlessly integrated in to the MegaCOMMS network, allowing third party networks and hardware to make use of those superlative Cadac Mic-pres.

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