CDA-4D Distribution Amplifier
ENGLISH Welcome to Bowers & Wilkins and CDA-4D Thank you for choosing Bowers & Wilkins. When John Bowers first established our company, he did so in the belief that imaginative design, innovative engineering and advanced technology were keys that could unlock the enjoyment of audio in the home. His belief is one that we continue to share and inspires every product we design, tailored for new audio experiences inside of the home.
Connecting speaker wires or input cables while the amplifier is powered may cause electrical shock and could damage the amplifier. Unplug the power cord before making connections. 1. CDA-4D Carton Contents a. b. c. d. e. f. g. 1 2 4 1 4 4 2 x x x x x x x ENGLISH CLASS 2 WIRING CÂBLAGE DE CLASSE 2 CDA-4D Rack-mount ears Feet Power cable Rack-mount ear screws (M5 x 8mm) Feet screws (M4 x 6mm) 5.
Diagram 2. Rack mounting ENGLISH 2. Installation 2.1 Rack mounting CDA-4D is intended to be installed in a standard 19-inch equipment rack. It is supplied with rack mount ears, but not rack mount bolts and nuts. Ensure that, once mounted in the rack, the amplifier is well ventilated and that the ventilation apertures are not obstructed. If the system is taken out of use for a long period, disconnect the amplifier from the mains power supply.
Diagram 3. Foot mounting ENGLISH 2.2 Foot mounting CDA-4D can also be table mounted and is supplied with feet and feet screws, see Diagram 3. 4x Ensure that, once positioned, the amplifier is well ventilated and that the ventilation apertures are not obstructed. If the system is taken out of use for a long period, disconnect the amplifier from the mains power supply. f c 4x To prevent damage, maintain adequate ventilation space to the sides of the amplifier.
Connecting speaker wires or input cables while the amplifier is powered may cause electrical shock and could damage the amplifier. Unplug the power cord before making connections. ENGLISH 4. Connecting Diagram 6. Connecting to network DIGITAL IN 1 4.1 Connecting from source There are three options when connecting audio inputs to the CDA-4D distribution amplifier. Ethernet (network connection) Network connection is mandatory for setup and configuration. See section 6 Network Connection Instruction.
CDA-4D can power two stereo output of audio and has phoenix-style terminal blocks for speaker connections. Speakers can also be wired to bridge channels to increase the power available to the speakers. Diagram 9. Connecting to speakers ENGLISH 4.2 Connecting to speakers Standard Wiring g To connect stereo speakers: 1. Connect speaker cable to the phoenix connector and reinsert into the amplifier, see Diagram 9.
ENGLISH 5. Setting POWER MODE CDA-4D can be set up to automatically power on when needed. The POWER MODE can be selected via the Product Configuration Page, allowing the CDA-4D to be powered on at all times when POWER MODE is set to ON. The CDA-4D can also be turned on when an audio signal is present at any audio input by selecting AUTO DETECT or the 12V TRIGGER. To set up CDA-4D to be controlled by a 12V trigger: Diagram 11. 12V Trigger 1. Connect the 12V trigger cable to the 3.
ENGLISH 7. Configuring your Amplifier (via Product Configuration Page) 7.1 Basic Settings In the Basic Settings tab, users can edit general amplifier settings. The following section will take you through each of the functions on this tab. 7.1.1 Information In this section, the user can add a name for the CDA-4D amplifier and enter the installation details. The amplifier model, Firmware version, serial number, temperature and time/date are displayed here, they are non-editable.
ENGLISH 7.1.2 Identification Mode When this option is switched ON the front power LED will start flashing (White) to indicate which amplifier you are programming. 7.1.3 Network DHCP ON / OFF CDA-4D’s factory default setting has DHCP (Dynamic Host Connection Protocol) set to ON. DHCP shows the current IP address used when DHCP is ON. When DHCP is set to OFF this allows you to enter a desired static IP address.
ENGLISH Control Systems Wake on Lan must be enabled to control the unit via a control system. Only one active connection to the unit will be available at any given point. We recommend setting up and tuning the unit via the web portal before connecting to a control system. The control system will need to be switched off before connecting to the unit via the web portal again. 7.1.5 Notifications In this section, the user can turn ON notification and select notification alerts from the list.
ENGLISH 7.2 Input / Output Settings In the Input / Output Settings tab, configuration of the routing for each input to a selected output can be made here. Mode of use, individual trim level and volume parameters can also be set.
ENGLISH 7.2.1 Input Source Setup Input Level Meter This displays the input signal sent to the amplifier. Input Source Select input source from the following selection Analogue / Digital / AVB* *AVB is available when two or more Bowers & Wilkins CDA amplifiers (CDA-2HD or CDA-4D) are connected to the same wired network using AVB enabled network hardware (AVB enabled switch). Analogue or digital input sources from other CDA amplifiers can be selected as an input source.
The Mode of Use defines the system setup and the number of possible speaker configuration variants. There are 3 options: Speaker Mode, Bridged-Tied Load Mode and 2.1 System Mode. ENGLISH 7.2.2 Mode of Use Speaker Mode Four channels driving four speakers in stereo or mono. Choosing a different mode will determine the type of Bowers & Wilkins products available for selection in the next section. Examples of the mode and configuration. 1. 2. 3. 4.
7.2.6 Output Volume Output Level Meter This monitors the audio output level sent to the speakers. This is the main volume level control for each channel. When channels are placed in the same output group the levels will change simultaneously. Output Name This section list all available output channels. Each output name can be customised to describe the type of output connected. Changes made to the Output Name will be reflected through the settings page.
Bowers & Wilkins products ENGLISH 7.3 DSP Configuration In the DSP Configuration tab, you can make fine adjustment like Phase, Delay and Tone Control on Bowers & Wilkins products. CDA-4D is designed to provide the best audio quality when used with Bowers & Wilkins speakers. When a third-party product is being used, select an User Preset in the Speaker selection.
ENGLISH Third-party products when a User Preset is selected 17
This section displays the output selection made in the previous Output Setup page. Listening Mode (available when a Bowers & Wilkins subwoofer is selected) Listening Mode provides equalisation options for music or movie programme material. ENGLISH 7.3.1 Output Information 7.3.2 Test Signal The CDA-4D includes a built-in pink noise generator. The pink noise signal can be used in conjunction with a spectrum analyser to measure the speakers.
ENGLISH 7.3.4.b DSP Settings for third party products Output Tab Select output tab to make adjustment to speaker settings for each output. EQ Graph The EQ graph reflects the changes to the EQ Parameter. EQ Parameter The CDA-4D features an 8 band parametric EQ. Adjustments made to the EQ will be displayed on the output frequency response graph with the following configurable settings: EQ On/Off Use On/Off button to switch the frequency band to activate the frequency bandwidth applied.
Diagram 13. LED status ENGLISH 8. LED status Power LED LED Status Dark / unlit Off Dim white Standby White On Red Fault Zone status LED LED Status Dark / unlit Off / Signal not present / PSU fault White On and signal present Red Zone fault Network status LED LED Status White Network present Red Network error 9. Support Please visit the Bowers & Wilkins support site at www.bowerswilkins.com/support for further help or advice regarding your amplifier.
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