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Summary of Contents for Coda C3
- Page 1 Coda Audio C3 DSP amplifier User Guide version 1...
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Page 2: Important Safety Information
Important Safety Information Please read carefully and keep the following instructions and safety information. Heed all warnings and follow all instructions. Do not remove covers. There are no user serviceable parts inside; please refer servicing to qualified service personnel. This equipment must be earthed. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles and the point where they exit from the apparatus. -
Page 3: Table Of Contents
Table of Contents Important Safety Information ....................2 Regulatory Compliance ....................2 Thanks and Unpacking ......................5 Introduction and Key Features ....................5 Front Panel .......................... 12 Power Switch ........................ 12 Power ON indicator ......................12 Bridged Mode indicator ....................12 Control Software Online indicator .................. - Page 4 EQ and Filter Response Graphs ....................25 Signal Processing Block Diagram ..................28 Technical Specifications ..................... 31...
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Page 5: Thanks And Unpacking
Thanks and Unpacking Thank you for choosing a Coda Audio C3 DSP amplifier system for your application. Please spare a little time to study the contents of this manual, so that you obtain the best possible performance from this unit. -
Page 6: Mechanical Installation
Mechanical Installation The C3 DSP amplifier system is designed to be mounted in a standard 19” rack enclosure. - Page 7 It is possible to mount multiple C3 amplifiers without ventilation gaps between them but it is essential that an unobstructed flow of clean air is available from the back of the unit to the front.
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Page 8: Ac Power Connection
The C3 amplifiers are designed to operate on 50/60 Hz AC power. The power supply sections automatically configure themselves for either 115V or 230V nominal voltage at turn on. The amplifiers will operate over an extended range of supply voltages from;... -
Page 9: Audio Connections
Audio Connections For each amplifier channel there are female and male XLR input connectors which are wired in parallel. Typically the female connector is used for the audio input, the male XLR connector being available to link the same audio signal to another amplifier channel. The HOT, + or „in phase‟... -
Page 10: Using Unbalanced Connections
Using unbalanced connections When connecting the C3 amplifier to an unbalanced audio source, the signal conductor should be terminated to XLR pin2 and the cable screen terminated to both pins 1 and 3. Input XLR unbalanced connection Pin 2 HOT + Pin 1 Shield In bridged mode output channel 1 signal chain provides the signal for the 1 &... -
Page 11: 100V Line Operation
4 ohms. 100V line operation A single channel of an C3 can deliver 1250W in to 2 Ohms, therefore the RMS voltage at the speaker terminals when delivering this will be √(1,250 x2) = 50V. -
Page 12: Front Panel
Front Panel Power Switch The C3 amplifier is fitted one dual channel power module. When the power switch is operated, the protect indicator will flash while the DSP and amplifier control systems are prepared. After approximately 3-4 seconds the amplifier will be operational and the audio level is gradually ramped up. -
Page 13: Protect
Protect The C3 DSP amplifier system has sophisticated protection and monitoring systems which keep the amplifier within its safe operating window whenever possible. This indicator lights when the protection systems are active in any way. User DSP indicator Using the C-Net PC application the user can introduce audio processing such as EQ, gain and delay. -
Page 14: Rear Panel
Rear Panel Power Inlet The C3 amplifier should be connected to a suitable mains electricity supply using the cable supplied. The unit uses auto ranging switch mode power supplies which are capable of operating with a nominal mains voltage of either 115V or 230V, 50/60Hz without re- configuration. -
Page 15: Communications Port Connections
When using the C-Net sockets, you will need to use a C-Net Interface accessory to allow your computer to communicate with the C-Net network. Before connecting a USB port from your computer to either the USB socket on C3, or to a first... -
Page 16: C-Net Amplifier Control Panel
Voice is indicated on the C-Net panel. The Aux Out socket allows you to chain the Aux connections on to further C3 so that the same voice selection is done on all of them. There is no practical limit to the number of C3 that may be chained together via the Aux sockets. -
Page 17: User Controls
This section of the user guide explains the functions of the C-Net control panel for the C3 DSP amplifiers. For further help and information on the main C-Net application please click on the help button on the main application. For more detailed help about the C3 control panel, click the “?”... -
Page 18: Main Control Panel
When the User DSP indicator is off, the amplifier is in Factory voice. In the Factory voice, you cannot change any of the settings; they are fixed by Coda Audio (and thus are a safe „fallback‟ if something goes wrong with your settings). Only when the indicator is on will changes you make in C-Net be heard. - Page 19 (such as “Left Fill”). Also viewable in this tab are the model name of the amplifier, and the name of the settings provided by Coda Audio of the factory file. The Maintenance area shows some details of how the amplifier has been used and the amount of protection the amplifier is applying.
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Page 20: Hidden Controls
You can change the view to the MonIcon panel by clicking the “<<” button. Hidden Controls Coda Audio may have hidden some of the controls on the panel in order to maintain proper protection of the connected loudspeakers. Such hidden controls will appear grey and cannot be adjusted. -
Page 21: Loading Factory Presets
Loading Factory Presets Coda Audio will provide you with one or more „preset library‟ files which contain settings for specific loudspeakers. These take the form of Factory files (Device Factory files (with file extension .dfa)). When you load preset factory settings into this type of device, the current user settings will be preserved since the factory settings will only overwrite the default factory DSP settings rather than the User DSP settings. -
Page 22: Keyboard Shortcuts
Keyboard Shortcuts C-Net supports the following „shortcuts‟: Move to next control In value boxes: CTL+C Copy CTL+V Paste CTL+X CTL+Z Undo On Drop-down, Spin, Push, Fader and radio controls: PgUp Increase value (coarsely) PgDown Reduce value (coarsely) Up/Right arrow Increase value (finely) Down/Left arrow Reduce value (finely) On push-button controls:... -
Page 23: Equalisation Filters
12dB/Octave Linkwitz-Riley 18dB/Octave Bessel 18dB/Octave Butterworth 24dB/Octave Bessel 24dB/Octave Butterworth 24dB/Octave Linkwitz-Riley A 2nd order low-shelf filter with frequency variable over the range 10Hz to 25kHz, and boost/cut from –15 to +15dB, and slope from 6 to 12dB/Octave. A 2nd order high-shelf filter with frequency variable over the range 10Hz to 25kHz, and boost/cut from –15 to +15dB, and slope from 6 to 12dB/Octave. -
Page 24: Bridge Mode
Limiters Coda Audio may have allowed you access to the Limiter threshold settings. These settings require careful adjustment in order to protect your loudspeakers. Please refer to Coda Audio for advice on the appropriate settings to use. Note that a setting of 0dB on the limiters equates to +36.8dBu = 53.8Vrms (or +42.8dBu, 107.7Vrms in bridge mode). -
Page 25: Indication
EQ and Filter Response Graphs The following plots show the attenuation characteristics of the various crossover filters available within the C3. These are all shown at a crossover frequency of 1kHz. Butterworth 1 10 1 10 Frequency, H z 6dB/Oct... - Page 26 Bessel 1 10 1 10 Frequency, H z 12dB/Oct 24dB/Oct Hardman 1 10 1 10 Frequency, H z 4th Order 8th Order...
- Page 27 The following plots show the magnitude response (frequency response) characteristics of the various equalization filters available within the C3. These are all shown at a c frequency of 1kHz. Shelving EQ 1 10 1 10 Frequency, H z Low shelf, varying Gain...
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Page 28: Signal Processing Block Diagram
Signal Processing Block Diagram Please note that each C3 contains one of these processing blocks. -
Page 29: Technical Specifications
Technical Specifications AUDIO Input impedance 10k balanced Max Input level +20dBu Frequency Response 20Hz - 20kHz+/-0.5dB @ 4 Ohm load Output noise -106dB A weighted Ref max output, 22kHz BW Distortion <0.05% (1kHz, -3dB output. 22kHz BW) PROTECTION SYSTEMS Output over current Initially gain reduced to maintain control, extreme or persistent over current causes shutdown Over temperature limiters applied, persistent over temperature causes shutdown... - Page 30 Weight 18 pounds, 8 Kgs Operating temperature range 0 to +40°C Relative humidity range 0 to 80% (non-condensing) CONNECTIONS Mains (per C3) Neutrik „Powercon‟ Audio input (per channel) 3 pin female XLR Audio link (per channel) 3 pin male XLR Output (per channel) Neutrik NL4 „Speakon‟...
- Page 31 This product complies with the EMC & LVD directives as issued by the Commission of the European Community. Compliance with these directives implies conformity with the following European standards: EN55103-1 Electromagnetic Interference (Emission) EN55103-2 Electromagnetic Susceptibility (Immunity) EN60065 Electrical safety C3 also meets the requirements of FCC part 15B.
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