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The CDA-4D is a compact distribution amplifier, designed to power current and future Bowers & Wilkins Custom Installation loudspeakers. Embedded DSP allows optimisation of a wide range of products and dynamic EQ for Bowers & Wilkins subwoofers. It boasts four channels of 125 watts each, and its full-rack-width 1U design delivers high-performance from minimum rack space.
| Audio Specifications | |
| Load impedance range: | >3Ω per channel (>6Ω in bridge mode) |
| Output Power per channel, non-clipped: | 60W into 8Ω 125W into 4Ω |
| Output Power bridge mode, non-clipped: | 250W into 8Ω |
| Output Power total, all channels: | 500W short term >125W continuous |
| DC offset voltage: | <50mV |
| Frequency Response (-3dB): | <10Hz to >30kHz, any load impedance |
| Frequency response accuracy 20Hz-20kHz: | +/-1dB |
| Dynamic range: | >85dB A-Weighted |
| THD+N (1kHz, 500W, 4Ω): | less than 1% |
| Voltage Gain: | 15dB to 39dB, adjustable |
| Input impedance: | 10kΩ |
| Maximum input voltage: | 4 Vrms |
| 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) (TBC) |
| Controls & Indicators | |
| Front panel: |
1 x Power LED (unit active – White, Fault – Red) |
| Connectors | |
| Input: | 2 x RCA (pair) Phono socket, Analogue line in 2 x RCA Phono socket, Digital line in 1 x Ethernet |
| Output: | 2 x 5.08mm Pitch 4-way Phoenix Combicon style |
| 12V trigger control: | 1 x 3.5mm jack - 12V trigger IN 1 x 3.5mm jack - 12V trigger OUT (Maximum 100mA pass-through) |
| Power | |
| Power consumption: | <0.5W Standby, WoL disabled <2W Standby, WoL enabled 300W maximum average (TBC) 1,000W peak (TBC) |
| AC supply: | 100-240V 50/60Hz |
| AC inlet: | IEC C14, switched |
| Thermal | |
| Thermal dissipation: | TBC BTU/hr (standby) TBC BTU/hr (Idle) TBC BTU/hr (max) |
| Dimensions | |
| Height: | 42.5mm (1.7in) 1U (57.5mm (2.3in) plus feet) |
| Width: | 436mm (17.2in) |
| Depth: | 300mm (11.8in) |
| Net weight: | 4.0kg (8.8lb) |
| Finish: | Black |