CDA-16 - Speaker BOWERS & WILKINS - Free user manual and instructions

USER MANUAL CDA-16 BOWERS & WILKINS

CDA-16 Distribution Amplier2 ENGLISH bowerswilkins.com Welcome to Bowers & Wilkins and CDA-16 Thank you for choosing Bowers & Wilkins. When John Bowers rst 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 outside of the home. Our CDA-16 distribution power amplier can drive any Bowers & Wilkins custom installation speaker to new heights of performance. Offering 16 channels of power, the CDA-16 can enable your whole home with sound yet takes up minimal space thanks to its compact 1U design. Its congurable specication supports bridging of its Class D stereo channels into even more powerful mono outputs, if needed. Features

• 16 channels distribution amplication in 8 zones with a powerful 100 watts per channel to deliver high-resolution audio.

• Engineered to work with any Bowers & Wilkins installation speakers.

• Highly exible usage / conguration – Zone L/R outputs can be bridged to provide a mono output of double the power.

• Three power mode control options – on, auto detect or 12V trigger.

• Robust and reliable protection features, preventing damage due to overload, short circuits or heat.

• Ultra-compact rack-mount design (1 rack unit), easy to install and congure. ENGLISH Contents ENGLISH 2

3. Controls and Connections 4

4.1 Connecting from source 4

4.2 Connecting to speakers 4

5. Setting POWER MODE 5

6. GAIN Controls and CLIP Indicator 6

Specications 73 ENGLISH

1. CDA-16 Carton Contents

1 x Power cable 2 x Rack-mount ears 4 x Rack-mount ears screws 4 x Feet 4 x Feet screws 8 x 5.08mm Pitch 4-way Phoenix Combicon style

CDA-16 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 amplier 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 amplier from the mains power supply. The CDA-16 is supplied with two rack mounting ears for installation in standard equipment racks. Attach the brackets by inserting machine screws through each bracket into the threaded holes in the side of the amplier, see Diagram 2. To prevent damage, maintain adequate ventilation space to the sides of the amplier. CDA-16 can be stacked vertically but be sure not to place the amplier next to other components, or against the side of a cabinet. Doing so will block ventilation openings.

CDA-16 can also be table mounted and is supplied with feet and feet screws, see Diagram 3. Ensure that, once positioned, the amplier 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 amplier from the mains power supply. To prevent damage, maintain adequate ventilation space to the sides of the amplier. CDA-16 can be stacked vertically but be sure not to place the amplier next to other components, or against the side of a cabinet. Doing so will block ventilation openings. Diagram 2 Rack mounting Diagram 3 Foot mounting Diagram 1 Contents 1 x 1 x 8 x4 x 4 x 4 x 2 x cool airwarm air4 ENGLISH

3. Controls and Connections

Rear panel sockets and switches

9. 12 V trigger in / out

Front panel controls

Connecting speaker wires or input cables while the amplier is powered may cause electrical shock and could damage the amplier. Unplug the power cord before making connections.

4.1 Connecting from source

CDA-16 accepts stereo line-level audio connections to its RCA Phono sockets. Each ZONE input will pass amplied audio to the respective zone speaker output. Alternatively, each ZONE can be linked individually to the GLOBAL IN (shared with ZONE 8).

IN (ZONE 8) and link speaker outputs to the GLOBAL IN by moving the dip switch up for that zone to the ON position.

4.2 Connecting to speakers

CDA-16 can power eight stereo zones 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. To connect stereo speakers:

1. Connect speaker cable to the phoenix

connector and reinsert into the amplier, see Diagram 7. The common signal of these speaker outputs must not be connected together or to any other common signal. Do not connect the L – and R – (negative) terminals together. Doing so will result in a fault condition and the amplier will either shut down or not work properly. Check the polarity of the speakers and wires before connecting to the amplier. Diagram 4 Rear panel Diagram 5 Front panel Diagram 6 Connecting from source Diagram 7 Connecting to speakers

RCA5 ENGLISH To connect bridged speakers, see Diagram 8:

1. Set the BRIDGE MODE dip switch if needed

for each zone by moving the dip switch up for that zone to the ON position.

2. Connect + terminal from the speaker to the +

terminal of the right channel (R).

3. Connect the - terminal from the speaker to

the - terminal of the left channel (L) on the amplier. The two terminals for a bridged pair of speakers area marked by + BRIDGE –. In bridge mode both ampliers in the zone combine to make a mono output of double the power. When in bridge mode only the left channel RCA input to the zone is active so please connect the input to this jack. Note: The minimum load impedance in bridge mode is 8Ω. Connecting 4Ω loads may result in lower output power, distortion and overheating.

5. Setting POWER MODE

CDA-16 can be set up to automatically power on when needed. The POWER MODE switch, see Diagram 9, allows CDA-16 to be powered on at all times, turned on with a 12V trigger or turned on when an audio signal is present at any audio input. To set up CDA-16 to be always on:

1. Slide the POWER MODE switch to ON.

In this mode, CDA-16 will be always on unless the power cord is unplugged or the power switch by the power plug is toggled off. To set up CDA-16 turn on by AUTO DETECT:

1. Slide the POWER MODE switch to

AUTO DETECT In this mode, CDA-16 will turn on when an audio signal is sensed on the audio input. Note: Only the amplier zone that senses audio will turn on when in AUTO DETECT mode. To set up CDA-16 to be controlled by a 12V trigger:

2. Connect the 12V trigger cable to the 3.5 mm

socket to another amplier to link their power control together. In this mode, CDA-16 will turn on when a 12V signal is present on the 12V Trigger Input. This 12V trigger input can be wired to the 12V trigger output from an audio matrix switch or a relay. Note: All amplier zones turn on when a 12V trigger is received in 12V TRIGGER mode. Diagram 8 Connecting bridged speakers Diagram 9 Power mode switch Diagram 10 Controlled by 12V trigger6 ENGLISH

6. GAIN Controls and CLIP Indicator

The GAIN controls are located next to each Zone input on the rear panel. They are operated by rotating the control clockwise to increase the GAIN or counter clockwise to decrease the GAIN. When turned fully counter clockwise, GAIN is reduced to 0 and no output signal will be present. When turned fully clockwise, the GAIN of the amplier is +34.9dB. To operate the GAIN control, rotate the control’s knob so that the desired level is achieved, a small, at-tipped screwdriver is typically used, see Diagram 11. Note: Do not apply excessive torque to the control, it will turn easily unless at the ends of its travel The CLIP indicator LED is located below the GAIN control. Flashing CLIP indicator indicates clipping is present while playing source input.

Power LED LED Status Dark / unlit Off Dim white Standby White On Red PSU Fault Zone status LED LED Status Dark / unlit Off / Signal not present / PSU fault White On and signal present Red Zone fault

Should you require further help or advice regarding your CDA-16 please visit the support site here bowerswilkins.com/support. Environmental Information This product complies with international directives, including but not limited to the Restriction of Hazardous Substances (RoHS) in electrical and electronic equipment, the Registration, Evaluation, Authorisation and restriction of Chemicals (REACH) and the disposal of Waste Electrical and Electronic Equipment (WEEE). Consult your local waste disposal authority for guidance on how properly to recycle or dispose of this product. Diagram 11 Gain and clip Diagram 12 LED status7 ENGLISH Specications AudioSpecications Load impedance range: >3Ω per channel (>6Ω in bridge mode) Output Power per channel, non-clipped: >50W into 8Ω >100W into 4Ω Output Power bridge mode, non-clipped: >200W into 8Ω Output Power total, all channels: >400W short term >200W continuous average DC offset voltage: <50mV Frequency Response (-3dB): <10Hz to >50kHz, any load impedance Frequency response accuracy 20Hz-20kHz: ±0.5dB Signal to Noise ratio (Ref. 50W/8Ω): >100dB A-Weighted THD+N (1kHz, 12.5W, 4Ω): typically 0.05% Voltage Gain: 34.9dB to - innity, adjustable Input impedance: 15KΩ Maximum input voltage: 6.8V peak (4.8V rms sine wave) Signal sense threshold: 2.5mV (independent of Gain setting) Wake-up time: <0.2s (If other zones active) <2s (From all zones inactive) Turn-off time: 15 minutes from last signal detected 12V trigger input threshold: typically 3V (recommended input is 5-15V) Controls & Indicators Front panel: 1 x Power LED (unit active – White, Fault – Red) 8 x Zone status LEDs (Signal present – White, Fault – Red) Rear panel: 8 x 2-position DIP switches (link to global input) 1 x 3-position switch (power mode: on, auto detect, 12V trigger) 8 x input gain control with Clip indicator LEDs Connectors Input: 8 x RCA (pair) Phono socket, line in (global in shared with Zone 8) Output: 1 x RCA (pair) Phono socket (global out) 8 x 5.08mm Pitch 4-way Phoenix Combicon style 12V trigger control: 1 x 3.5 mm jack - 12V trigger IN 1 x 3.5 mm jack - 12V trigger OUT (Maximum 100mA pass-through) Power Power consumption: <0.5W All zones inactive <45W All zones idling 300W maximum average 1,000W peak AC supply: 100-240V 50/60Hz AC inlet: IEC C14, switched Thermal Thermal dissipation: 1.7 BTU/hr (standby), 150 BTU/hr (Idle), 400 BTU/hr (max) Dimensions Height: Width: Depth: