The Cadac CDC seven-s is the flagship console in Cadac’s digital line-up.
The CDC seven-s retains the familiar feel of the CDC six but provides the added flexibility of dual 23.5 inch 16:9 high definition LCD touch screens. These incredibly bright, high contrast screens display the exceptionally intuitive “high agility” swipeable graphical user interface. The encoders to the right and bottom of both screens further encourage the instinctive use of gesture – touch and swipe – to navigate and operate the console.
Cadac CDC seven-s Broadcast
The CDC seven-s is not only physically larger than its sister consoles, the CDC six and five, but it also has a greater channel count, with 128 input channels and a configurable bus count of 56. It shares the same operating system and feature set as its smaller siblings meaning that show files can run across all three.
Cadac CDC seven-s Glastonbury
A fundamental design foundation of Cadac digital is latency management. Due to the impact of the latency inherent with existing audio protocols Cadac designed its own – MegaCOMMS, a digital audio network developed to meet the performance demands of live sound. MegaCOMMS allows the CDC seven-s to have a total through-system propagation delay from inputs on stage to outputs, including all console processing and AD/DA conversions, of 37 samples (@ 96 kHz), or just under 400us.
As a result of Cadac’s innovative user interface and latency management, the CDC seven-s is an incredibly attractive proposition for those who want something that stands head and shoulders above the norm.
Hardware Overview
Features Overview
The major advantage of the dual screens is the ability to display, and control, multiple tasks simultaneously; for example the VCAs can be displayed on one screen while the inputs to the VCAs are displayed on the other. The faders and encoders naturally follow the GUI displayed on the individual screens, resulting in further increases in the speed and flexibility of the workflow. All 36 faders on the CDC seven-s feature stereo metering, with a full colour user definable OLED display above the fader to make channel identification fool proof.
For further information about the feature set of the CDC seven-s, click on the features below:
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 50 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 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 converters.
Another key to the Cadac sound is the attention paid to latency management – a major factor in digital audio performance and overlooked by a majority of other digital consoles.
All digital consoles take time to process audio. When 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.
All Cadac digital consoles use Cadac’s own MegaCOMMS audio digital protocol. This results in a latency of under 0.4 milliseconds from analogue inputs on stage, through the console to analogue outputs on stage, making it 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
Cadac’s MegaCOMMS digital audio network has been designed to meet the requirements of the most challenging applications. MegaCOMMS is a robust, TDM (time division multiplex) system. Control data is embedded within the data stream, so that no audio channels have to be sacrificed for this purpose. The high bandwidth available means that the current implementation of MegaCOMMS can carry 128 channels of 24-bit, 96 kHz audio, plus control data, plus clock, bi-directionally, up to 150 metres via a pair of RG-6 coaxial cables.
In addition to audio and control data, MegaCOMMS provides for accurate, phase-aligned clock distribution, by embedding timing markers in the data stream. This allows reliable, low-jitter synchronisation of all hardware elements within a network.
The simplest implementation of a MegaCOMMS network is the straightforward console-stagebox configuration. In this application, the console provides the clock and the stagebox synchronises itself once the connections are made. Total through-system propagation delay for this system, including all console processing and A-D / D-A conversions is an astonishing 37 samples (@ 96 kHz), or just under 400us. This compares with the many millisecond propagation delays usually found in most other similar systems.
For larger, true audio networks, a MegaCOMMS router is required which provides low-jitter clock synchronisation and flexible routing capability for up to 3072 channels of 24-bit, 96 kHz audio. The addition of a router into a system only adds an additional sample (approximately 10us) of propagation delay. MegaCOMMS is also capable of providing automatic fail-over to redundant spare connections, so providing peace-of-mind for critical applications. Most Cadac MegaCOMMS devices (consoles, large-format stageboxes and network bridges) support dual-redundant connections, with automatic seamless change-over in the event of cable failure.
The hardware “hub” for a large-scale network is the Cadac MegaCOMMS router – the CDC MC Router. This device has 12 pairs (send and return) of MegaCOMMS ports, easily identifiable from glowing colour coded BNC sockets. The MegaCOMMS router can connect up to 12 MegaCOMMS devices, and a MegaCOMMS device can be a console, stagebox or network bridge.
The CDC MC Router in conjunction with its control software, NetCOMMS, allows the fast and intuitive creation of powerful MegaCOMMS networks. Via a PC via using a simple graphical user interface Router maps can be created, edited and saved before uploading to the CDC MC Router via the Ethernet connection or as part of a wireless network.
The CDC MC Router also has the useful function of providing “gain compensation” in that if any of the connected mic amps have their analogue gain adjusted, the router will automatically compensate for the change in audio level to any and all other devices connected. This gain compensation process takes just a single sample (about 10us.) for the router to make the necessary adjustment, and so is completely inaudible in operation. This facility allows a stagebox’s analogue inputs to be shared between a number of consoles, and for multiple consoles to be connected to a common set of I/O in order to provide multiple mixing systems or multiple fully dual-redundant systems. In these large scale applications, the MegaCOMMS router provides clock for all consoles and I/O devices.
Cadac have also designed network bridging devices to enable MegaCOMMS to connect to other protocols. The network bridges feature dual-redundant power supplies and dual-redundant connections to other MegaCOMMS units, as well as asynchronous sample-rate conversion to other popular protocols such as MADI (AES10), via the CDC MC MADI Newtork Bridge, and DANTE via the CDC MC Dante Network Bridge.
MegaCOMMS networks are clocked at 96 kHz, but Cadac do provide for SRC (sample rate convertor) to other clock speeds and conversion to more widely adopted protocols such as MADI and Dante.
Example of a MegaCOMMS Network
The CDC MC Router provides the dynamic routing capability for the MegaCOMMS network. The 2U unit has 12 pairs of MegaCOMMS ports which can handle an audio network of 3072 channels.
The CDC MC Router in conjunction with its control software, NetCOMMS, allows the fast and intuitive creation of powerful MegaCOMMS networks. Via a PC via using a simple graphical user interface Router maps can be created, edited and saved before uploading to the CDC MC Router via the Ethernet connection or as part of a wireless network.
The CDC MC Router also handles gain compensation between consoles, automatically compensating for adjustments in gain, up to ± 20 dB, from the master console without affecting the gain, or audio quality, of any other console in the same network.
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 coaxial cables can be up to 150 metres and the optical link up to 2 kilometres.
Feature Summary
The consoles come preconfigured with fixed format local I/O consisting of 8 AES3 inputs and 8 AES3 outputs, alongside up to sixteen fully programmable mic inputs and 8 analogue outputs.
Cadac also offers three fixed format stageboxes, with MegaCOMMS connectivity, which provide inputs and outputs remotely from the console. These include the CDC I/O 3216, which has 32 mic inputs and 16 analogue outputs and the CDC MC AES3 that provides a total of 18 AES3 inputs / outputs, plus the larger CDC I/O 6448 which features 64 mic inputs and 48 analogue outputs.
Two stageboxes can be connected directly to the rear of the console but up to eleven MegaCOMMS units can be added via the CDC MC Router, creating a much larger audio network.
The CDC Console Software automatically detects the I/O units, and patching is simply achieved by a touch on the screen. Each input / output on the unit can be “flashed” from the console making identification incredibly easy on the stage.
Feature Summary
The CDC I/O 6448 is an 11U fixed configuration stagebox featuring 64 highly acclaimed Cadac mic-amps and 48 analogue XLR outputs. The stagebox is connected to the console using Cadac’s MegaCOMMS network protocol allowing the I/O unit to be located up to 150 meters from the mixer. The CDC I/O 6448 has two pairs of MegaCOMMS send and receive ports on the rear for redundancy.
The Cadac mic-press can be controlled remotely from the console along with output assignments. To complete the user interface there is signal present, clip and phantom power indication plus mute indication for the outputs. Larger networks can be created by using the MegaCOMMS CDC MC Router which can connect up to 12 MegaCOMMS devices within one network.
For that extra peace of mind there is also the option for adding an additional power supply to safe guard against PSU failure.
Feature Summary
CDC I/O 3216 is a 4U fixed configuration unit featuring 32 mic / line analogue inputs and 16 XLR analogue outputs. The stagebox is connected to the console by using 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.
All functions of the mic-pre’s can be controlled remotely from the console. The comprehensive front-panel indicators include signal present, clip and phantom power status. There is also mute indication featured on all CDC I/O 3216 outputs.
Feature Summary
The 2U CDC MC AES3 Stagebox provides a total of 18 AES3 inputs / outputs via 4, 25-way D-Sub connectors and 2 XLR connectors, making a total of 36 audio inputs and outputs. All of the inputs, which are transformer isolated, and outputs have SRC on a connector to connector basis; 44.1 kHz, 48 kHz and 96 kHz (192 kHz on inputs only) with conversion to 96 kHz.
The unit can also be synchronised with an external Word clock (3V3 and 5V0), AES11 or via its own internal clock.
The unit features redundant PSUs as standard.
Feature Summary
The CDC seven-s can be part of a much larger, integrated audio network.
The CDC MC Dante and MADI bridges allow these third party audio network protocols to be seamless integrated in to the MegaCOMMS network.
The standard Waves interface card on the CDC seven-s gives access to not only to the Waves plug-ins, but also the ability to perform a “virtual sound-check” and to record up to 64 audio tracks straight to your computer.
With Cadac Remote for the iPad, all of the key features of the console can be controlled from anywhere in the venue within reach of wireless router.
For more information click on the tabs.
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 coaxial 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.
This video provides an overview of the CDC MC MADI audio network bridge
Feature Summary
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 coaxial 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.
This video provides an overview of the CDC MC Dante audio network bridge
Feature Summary
The CDC five, CDC six and CDC seven-s feature an integrated Waves SoundGrid interface card which provides connectivity to Waves SuperRack.
This allows up to 64 channels of Waves studio-grade plug-ins to simultaneously run alongside the console’s own native effects options. Audio is streamed from the integrated interface card to the SoundGrid server, processed, and then streamed back to the console via Cat5e.
The Waves processing is patched in the same way as the existing Cadac I/O racks, and can be used as a send and return for effects processing, or alternatively can be patched and used as inserts, giving great flexibility.
The Waves interface can also be used to multi-track record or playback multi-tracks for a “virtual” sound check via a PC or Mac by using the Waves QRec App.
Each of the console’s input channels features two inputs. These can easily be configured as mic/playback and switching between them globally achieved at the touch of a screen.
Feature Summary
General Specifications CDC seven-s
Faders | 36 x 100mm motorised faders |
Screens | 2 x 23.5″ 16:9 HD + 1 x 6.5″ Touchscreens |
PSU | 1 x external 19″ 2U rackmount PSU |
(option to add second external 19″ 2U rackmount PSU with full redundancy | |
Inputs | Up to 192 (inc local I/O) |
Channels | 128 with full processing |
Busses | 56 configurable in pairs as group/aux/st aux plus dedicated LCR, monitor LR, headphones LR and talkback |
Matrix | Up to 67 x 48 with full processing |
Outputs | Up to 192 (inc local I/O) |
Graphic EQ | 32 band +/-16 dB on all 55 outputs |
Internal FX | 16 high-resolution 96 kHz stereo effects processors |
Local IO | 8 x XLR Mic Inputs (inc 48 V, PAD and 1 dB gain steps), 8x XLR Balanced outputs, 4 x XLR AES/EBU inputs and 4 x XLR AES/EBU outputs |
Comms | 2 x Cadac MegaCOMMS |
| |
Audio Specification | |
Sample Rate | 96 kHz |
Processing Delay | Sub 0.4 millisecond latency through complete signal chain |
Internal Processing | 40-bit floating point |
ADC/DAC | 24-bit |
Frequency Response | 20 Hz to 44 kHz + 0.5 / -1.5 dB |
THD+N | better than 0.005% @unity gain, 10 dB input at 1 kHz |
Channel Seperation | better than 90 dB |
Residual Output Noise | < -90 dBu (20 Hz – 20 kHz) |
MIC EIN | < -127 dB with 200 Ohm source impedance |
Maximum Output | 21 dBu |
Dimensions:
Click to Open: CDC seven-s line drawing.pdf
1555.7mm width x 766mm depth x 259.12mm height
Weight:
60kgs / 132lbs (approx)