CDC four:m

  • Overview



    Based on a proprietary DSP mix platform, the CDC four:m is a fully featured versatile digital console with the look, feel and simplicity of using an analogue console. The CDC four:m builds upon the CDC four feature set by providing the user with GEQs on all aux busses in addition to the master L and R, plus the inclusion of a 6 x 4 matrix with GEQ, PEQ and dynamics processing.

    This video provides an overview of Cadac's CDC four compact format digital audio mixing console (CDC four:m has the addition of GEQs on all aux busses in addition to the master L and R, plus the inclusion of a 6 x 4 matrix with GEQ, PEQ and dynamics processing)


    Due to its audio performance the CDC four:m excels equally well in recording applications as it does in its primary function as a live sound console used for concert touring, corporate AV, schools and houses of worship. It also has the advantage of being rack mountable making it ideal for situations requiring up to 56 channels in a 19” rack. 


    The CDC four:m brings Cadac sound and build quality to the compact, rack mountable, digital console market providing a high-quality solution for all applications and budgets.

    Hardware Summary

    • 7” TFT high resolution colour display
    • All channel functions have their own dedicated encoder for quick access
    • 16 motorised high quality 100mm faders
    • Includes 19” rack mounting kit
    • Internal switch mode power supply

    Feature Summary

    • Up to 56 Channels of Cadac quality sound
    • 24 channels (16 mic / 8 stereo) on board
    • 16 superb Cadac mic pre’s
    • 32 channel expansion using the CDC I/O 3216 stage rack
    • 8 aux busses, 2 FX busses and 4 subgroups
    • 8 VCA groups
    • 6 x 4 matrix with GEQ, PEQ and dynamics processing when used with the CDC I/O 3216 stage rack
    • GEQs on all aux busses in addition to the master L and R
    • 6 stereo effects with 96 kHz processing
    • 2 dedicated stereo returns for FX processors
    • 96 kHz 24-bit Delta Sigma AD/DA converters
    • 4th generation 32/40-bit floating point SHARC processors
    • Automatic latency management
    • Comprehensive LED metering
    • Built in oscillator/noise generator
    • Talkback with dedicated talk button
    • High quality headphone amplifier
    • Solo, PFL/AFL and Solo in Place, with multiple configuration options
    • Channel and output muting

    Features


    The CDC four:m features 16 fully motorised channel faders, high resolution TFT colour display and fully recallable scene memory. Cadac’s signature sound quality is achieved by using specially developed remarkably low distortion EQ filters, true analogue sounding compressors, 96 kHz 24-bit Delta Sigma AD/DA converters and fourth generation 32/40-bit floating point SHARC processors.

    This video provides an overview of the rear panel connectors on the Cadac CDC four


    Multitrack recording is achieved via an optional MC MADI network bridge, while input channels can be increased for live applications with the optional MegaCOMMS card and the CDC I/O 3216 stagebox, which provides an additional 32 inputs and the 16 outputs up to 150 metres (492ft) away on stage.

    The CDC four:m, which has GEQs on all aux busses in addition to the master L and R, and when used in conjunction with a CDC I/O 3216 the console’s 6 x 4 matrix, with GEQ, PEQ and dynamics, are available on the stagebox’s outputs.

    With Cadac’s iPad App - TabMix - there is the ability to control the major features of the console remotely, making both sound check and show time easier as it frees the console operator from the confines of the mixer’s location.

    Mic Pre

    As with all Cadac digital consoles meticulous care has been taken in designing the analogue elements of the audio path and in the conversion process for the CDC four:m. The mic pre’s on the CDC four:m features a wide dynamic range plus extremely low noise floor and uses only premium components in its construction. As a result the console provides outstanding CMRR and the classic Cadac sound that is clean, transparent, and musical.

    Feature Summary

    • Over 45 years of Cadac engineering heritage
    • Wide dynamic range
    • Low noise floor
    • 24-bit / 96 kHz Delta Sigma AD/DA convertors

    Screen


    The central 7-inch hi-resolution colour TFT display shows detailed views of all channel parameters along with scene control, effects processors, MIDI status, editing and routing control.

    Rotary encoders can allow fine resolution changes by pushing and turning the control. Bus routing, auxiliary pre/post assignment and detailed dynamics are shown in the display; this leaves more front panel space for quick access to real time functions.

    This video provides introduction to the channel overview screen on the Cadac CDC four:m


    This video provides an overview of the Routing screen on the CDC four:m


    Feature Summary

    • 7” hi-resolution screen
    • Rotary encoders for quick access and navigation

    Central Assignment Module



    The Central Assignment Module (CAM) controls equalisation, group assignment, VCA control, effects, auxiliary sends and dynamics. Each of these functions has a discrete control with no ‘doubling up’ or time consuming menu scrolling. This enables the desk to be operated as quickly as its analogue counterpart. The Master section has exclusive dedicated controls for output EQ and dynamics, so your mix is always instantly accessible.

    This video provides an overview of the Effects on the Cadac CDC four:m


    This video provides an overview of the Compressors on the Cadac CDC four:m


    Feature Summary

    • Quick access to consoles functions
    • No ‘doubling up’ of functions
    • No menu scrolling
    • Dedicated Master section controls

    MegaCOMMS Card



    The MegaCOMMS card is the audio interface for the CDC four:m that allows the consoles to take advantage of Cadac’s MegaCOMMS audio protocol. The optional card enables the CDC four:m to connect to Cadac’s range of stageboxes permitting the input count to rise to 64 along with, up to 26 outputs on stage. The card simply slots in the rear of the console and connection to the stagebox is via 2 co-axial cables of up to 150 metres (492 feet) in length. This neatly dispenses with the need for heavy, bulky and expensive analogue multi-cores.

    This video provides an overview of the MegaCOMMS card for the CDC four:m


    Feature Summary

    • Connects the CDC four:m to Cadac MegaCOMMS stageboxes
    • Allows stagebox to be up to 150 meters / 492 feet from the console
    • Allows connection to the MegaCOMMS router and audio network bridges
    • Simple plug-and-play

    iPad App



    Cadac’s Console Remote Manager iPad App - TabMix - provides wireless remote control of the key functions of the CDC four:m. Once a wireless router is connected to the console there is no difficult setup procedure as the App automatically detects and selects the active console type.

    With TabMix’s intuitive graphical user interface and real-time command of the console, sound check becomes less of a chore and more of a creative process.

    TabMix is free to download from Apple’s App Store.

    Feature Summary

    • Real time control of the console
    • Intuitive graphical interface
    • Simple setup – auto detect of console type 

    Audio Quality


    Cadac’s analogue mic-amps have been universally acclaimed as the premium mic-amp in the industry. 

    The design brief for a digital console was simple and consistent with the brand’s ethos for over 45 years – audio first.

    Cadac’s digital consoles bear the hallmark of their analogue origins which can be traced back beyond the now legendary J-Type, which itself is still in production after nearly 25 years, to those classic consoles of the golden age of recording studios. The audio performance still retains its traditional wide dynamic range and low noise floor through a combination of unique analogue emulating algorithms and the latest 24-bit / 96 kHz Delta Sigma AD/DA convertors.

    Another key to the Cadac sound is the attention paid to latency management – a major factor in digital audio performance and over looked by a majority of other digital consoles.

    This video provides an overview of Cadac's CDC four:m latency management


    All digital consoles take time to process audio. Combining signals with different paths and processing, most digital consoles when summing the multiple signals will be partly out of phase. Cadac digital consoles have an extensive automatic latency management system which manages all internal routing and associated processing latency, which means that all audio samples are synchronised before summing, resulting in absolute phase coherency at all outputs.


    Both the CDC eight and the new CDC six on Cadac’s MegaCOMMS network have a latency of under 0.4 milliseconds, from analogue inputs on stage, through the console, to analogue outputs on stage. This makes them perfect for in-ear monitoring. All inputs and all outputs are time aligned to sample accuracy - no matter the routing or where they are located in the network.

    Feature Summary

    • Over 45 years of Cadac audio knowledge
    • Comprehensive and automatic latency management system
    • Comprehensive automatic time alignment
    • 24-bit / 96 kHz Delta Sigma AD/DA convertors

    MegaCOMMS


    All Cadac digital audio is transmitted using Cadac’s proprietary MegaCOMMS digital interconnect protocol which provides less than 0.4 ms latency from analogue input on stage, through the CDC eight or CDC six, to analogue output on stage, plus robust error correction and advanced system clocking.

    The protocol provides up to 128 bi-directional channels of 96 kHz / 24-bit audio along with all control data and clock synchronisation. This is all carried on co-axial cable with runs of up to 150 meters (492 feet) from the console or MC Router. The benefit of combining audio, control, and clock into one single network simplifies connectivity, shortens set-up time and reduces investment in cabling infrastructure.

    For more in-depth information about Cadac's unique MegaCOMMS audio protocol click here.

    MegaCOMMS Card



    The MegaCOMMS card is the audio interface for the CDC four:m that allows the consoles to take advantage of Cadac’s MegaCOMMS audio protocol. The optional card enables the CDC four:m to connect to Cadac’s range of stageboxes permitting the input count to rise to 64 along with, up to 26 outputs on stage. The card simply slots in the rear of the console and connection to the stagebox is via 2 co-axial cables of up to 150 metres (492 feet) in length. This neatly dispenses with the need for heavy, bulky and expensive analogue multicores.

    This video provides an overview of the MegaCOMMS card for the CDC four:m


    Hardware Summary

    • Connects the CDC four:m to Cadac MegaCOMMS stageboxes
    • Allows stagebox to be up to 150 meters / 492 feet from the console
    • Allows connection to the MegaCOMMS router and audio network bridges
    • Simple plug-and-play

    CDC MC Router


    The CDC MC Router provides the routing capability for the MegaCOMMS network. This 2U unit with 12 pairs of MegaCOMMS ports allows up to 12 MegaCOMMS units, including consoles, to be linked within the same audio network. It can expand the audio network up to a count of 3072 channels and provides console gain compensation and console mirroring.

    The MegaCOMMS units include stageboxes and audio network bridges. This means that a number of I/O stageboxes can be placed around a venue feeding the FoH and monitor positions – and redundant consoles – plus either Dante or MADI network bridges feeding 128 channels to broadcast trucks or a DAW. All this on 150 meter (492 feet) cable runs from the CDC MC Router or up to 2 km / 6,561 feet on single mode fibre via the CDC MC Optical bridge.

    Below is a diagram showing the potential network capability of the CDC MC Router:


    The above diagram has 128 analogue inputs shared between four consoles, which can be configured either as four discrete mixing systems, or two redundant console pairs. The example also shows audio distributed to remote broadcast and recording facilities via MegaCOMMS to MADI and Dante network bridges. The CDC MC Router provides gain compensation for all audio streams should any analogue input gains be adjusted during the performance, and can be pre-programmed with up to eight different routing maps, which can be selected from remote switching panel. All RG-6 cables can be up to 150 metres and the optical link up to 2 km.

    Hardware Summary:

    • 2U MegaCOMMS router
    • 12 pairs of MegaCOMMS ports per Router
    • One audio network of up to 3072 channels
    • Up to 128 bi-directional channels of 96 kHz / 24-bit audio per port
    • Adds less than 0.01 milliseconds to a MegaCOMMS network
    • Connect mulitple MegaCOMMS compatible consoles, with gain compensation and console mirroring, in one network
    • Connect up to 12 MegaCOMMS compatible units in one network
    • RG-6 cable runs of up to 150 meters / 492 feet
    • Via the CDC MC Optical bridge runs can be up to 2 km / 6,561 feet on single mode fibre
    • MegaCOMMS network co-axial ports glow either red or blue for Rx (receive) or Tx (transmit)

    I/O Expansion


    The CDC I/O 3216 is the ideal stagebox for the CDC four:m. It is a 4U fixed configuration unit featuring 32 mic / line analogue inputs and 16 XLR analogue outputs permitting the input count to rise to 64 along with 16 outputs selected from the available 26, on stage. The stagebox is connected to the CDC four:m via the MegaCOMMS card allowing the console to take advantage of Cadac’s propriety low latency MegaCOMMS audio network protocol. The CDC I/O 3216 can be located up to 150 metres (492 feet) away from the console using just a pair of co-axial cables.

    When the CDC I/O 3216 is used in conjunction with the CDC four:m the console’s 6 x 4 matrix outputs, with GEQ, PEQ and dynamics, are available on the stagebox’s outputs.

    This video provides an overview of Cadac's CDC I/O 3216 stagebox


    The mic-pres can be controlled remotely from the console and the outputs can also be assigned from the console. To complete the user interface there are signal present, clip and phantom power indication plus mute indication for the outputs.

    Hardware Summary

    • 4U fixed configuration
    • Provides an additional 32 Cadac mic / line inputs on stage
    • Provides 16 line outputs on stage
    • 6 x 4 matrix on outputs when used with the CDC four:m
    • Single MegaCOMMS port

    Integration


    By using the MegaCOMMS interface card the CDC four:m can also take advantage of either of Cadac’s audio network bridges; the CDC MC MADI or CDC MC Dante. This allows the CDC four:m to be integrated into third party MADI or Dante audio networks. The console can of course also be seamlessly incorporated into a much larger MegaCOMMS network, with up to 3072 channels, via the CDC MC Router.

    The MC MADI convertor will allow you to stream the input channels to your DAW (with the appropriate computer interface) and make multi-track recordings quickly and easily. Recordings can be made at the standard 48 kHz MADI sample rates or at 96 kHz for more demanding applications. Multi-track recordings can then be played back through the CDC four:m for remixing or for “virtual sound check” when the live artiste is not available.

    Feature Summary

    • MADI integration via the CDC MC MADI network bridge
    • Dante integration via the CDC MC Dante network bridge
    • MegaCOMMS network expansion via the CDC MC Router
    • Optical link via the CDC MC Optical bridge

    CDC MC MADI



    The CDC MC MADI is a MADI to MegaCOMMS audio network bridge allowing the seamless integration of MADI audio streams into a MegaCOMMS audio network. The 1U unit can operate at 96 kHz or 48 kHz and can handle up to 64 inputs and outputs and is equipped with 128 channels of SRC as well as its own independent word clock. 

    The MC MADI comes as standard with dual PSUs ideal for mission critical applications. The MADI audio connections are handled via co-axial and optical. To aid with configuring the MegaCOMMS network the unit’s co-axial ports glow either red or blue for Rx (receive) or Tx (transmit) – a real boon for speeding up low light set-up.

    Hardware Summary

    • 1U MC MADI audio network bridge
    • 96 kHz or 48 kHz operation
    • Up to 64 inputs and outputs
    • Coaxial and optical audio connections 
    • Independent word clock synchronisation
    • MegaCOMMS network co-axial ports glow either red or blue for Rx (receive) or Tx (transmit)
    • Dual PSUs

    CDC MC Dante



    The CDC MC Dante is a 1U Dante to MegaCOMMS audio network bridge enabling Dante units to be incorporated in to the MegaCOMMS audio network. The unit can work at either 96 kHz or 48 kHz and can handle up to 64 inputs and outputs. 

    The MC Dante also has 128 channels of SRC as well as its own independent word clock with audio connections via co-axial plus dual PSUs as standard for extra peace mind when used in critical applications. As with the CDC MC MADI unit the co-axial ports glow either red or blue for Rx (receive) or Tx (transmit) – enabling fast and accurate configuring of the MegaCOMMS network especially in low light.

    Hardware Summary

    • 1U MC Dante Audio Network Bridge
    • 96 kHz or 48 kHz operation
    • Up to 64 inputs and outputs
    • Coaxial and RJ45 audio connections
    • Independent word clock synchronisation
    • MegaCOMMS network co-axial ports glow either red or blue for Rx (receive) or Tx (transmit)
    • Dual PSUs

    Specification
    Features CDC four Connector
    Input (totals) 41  
    Mic/Line Inputs with insert (Local I/O) 16 3 pin female XLR or 1/4 inch jack socket
    Additional Mic Input (Optional I/O Rack) Up to 32 3 pin female XLR

     

    Busses (total) 27
    Subgroups 4
    Aux 8
    Stereo Effects Bus (internal only) 2
    Aux switchable Pre/Post fader 8
    Master LR 2
    AFL (stereo) 2
    PFL (Mono) 1

     

    Output (totals) 36  
    Subgroups 4 1/4 inch jack socket
    Aux Outputs 8 1/4 inch jack socket
    Master Stereo Output with Inserts 2 3 pin male XLR
    Master Mono 2 3 pin male XLR
    Stereo Monitor Out 2 1/4 inch jack socket
    Mono Monitor Out 1 1/4 inch jack socket
    Direct Output 16 1/4 inch jack socket
    Stereo Headphones 1 1/4 inch jack socket

     

    Matrix    
    Matrix 6 x 4 on the outputs of CDC I/O 3216 when connected

     

    Digital Interface - MegaCOMMS
    Sample Frequency 96 kHz
    Bit Depth 24-bit

     

    Specification
    Channels 16 mono + 8 stereo (Console only)
    48 mono + 8 Stereo (Console + CDC I/O 3216)
    Auxiliaries 8
    Subgroups 4
    Stereo Effects Return 2
    Input Impedance 1k2 (Mic) on XLR or
    10K (Line) on Jack Socket
    Nominal Input Level +9 dBu (-12 dBFS)
    Max. Input Level +21 dBu (0 dBFS)
    Max. Output Level +21 dBu (0 dBFS)
    Mic Amp CMRR Better than 50 dB
    Signal to Noise Better than 100 dB
    Equivalent Input Noise (EIN) 128 dB
    Dynamic Range 114 dB
    THD 0.01%
    Frequency Response 20 Hz ~ 40 kHz
    Crosstalk Better than -100 dB
    Phase Response Less than 10 degree at 20 Hz

     

    Digital Specification
    AD/DA Converters 24-bit
    DSP Resolution 40-bit floating point
    Sample Frequency 96 kHz

     

    CDC four:m

    Dimensions:

    480mm wide (18.89”) x 179.6mm (7.07”) high x 578.1mm (22.76”) deep

     

    Weight:

    14.8 kg / 32.63 lb