Important Notice: This product is special order only. It is non-cancellable and non-refundable.
Bose Professional 808453-1110 Bose CSP-428 Commercial Sound Processor is for quick-turn installations — Bose commercial sound processors are part of a comprehensive platform that includes loudspeakers, controls, and software that help installers deliver premium sound systems efficiently. An onboard CSP configuration utility and intuitive browser-based UI provide a quick-setup workflow. Common tasks are presented in a logical manner, so you can configure the system faster, reducing installation time while increasing setup accuracy. Once installed, Bose-proprietary algorithms offer predictable performance while optional interfaces — such as ControlCenter digital zone controllers and the ControlSpace Remote app — make operation easy for end users.
Features:
- Right-sized connectivity for cost-effective commercial installation — 2 x 2 balanced analog I/O, 2 pair mono-summed RCA inputs, 8 control inputs, 1 control output, mute contact, Ethernet port, and Bose AmpLink connectivity
- CSP configuration utility with browser-based UI facilitates real-time display and control of levels, routing, thresholds, priorities, scheduled events, Bose loudspeaker EQs, plus input and area EQs
- Rear-panel Ethernet port for PC/Mac configuration; also allows for connection to networks supporting ControlCenter digital zone controllers and the ControlSpace Remote app
- AutoVolume compensation continuously adapts zone output level based on ambient noise when paired with the Bose AVM-1 sense microphone (sold separately)
- Opti-voice paging provides a smooth transition between music and announcements
- Opti-source level management monitors input level of up to 4 sources, maintaining consistent volume when switching sources
- SmartBass processing expands performance and response at any listening level
- Bose AmpLink output for simplified digital audio connection to compatible power amplifiers, reducing terminations, and related points of failure
- Intuitive end-user operation — optional ControlCenter CC-1D, CC-2D, and CC-3D digital zone controllers and ControlSpace Remote app provide easy volume control and source selection
- Applications: Retail stores, restaurants, and hospitality venues
Specifications:
INTEGRATED DSP
- Signal Processor/CPU: 32-bit fixed/floating-point DSP + ARM, 456 MHz
- Maximum Calculation: 3.6 GIPS / 2.7 GFLOPS
- Audio Latency: 900 μs (analog in to analog out)
- A/D and D/A Converters: 24-bit
- Sample Rate: 48 kHz
AUDIO PERFORMANCE SPECIFICATIONS
- Frequency Response: 20 Hz - 20 kHz (+0.3 dB/-0.5 dB)
- THD+N: < 0.01 % at +4 dBu (A-weighted/20 Hz – 20 kHz)
- Channel Separation (Crosstalk): < -105 dB at +4 dBu input and output level, 1 kHz
- Dynamic Range: > 115 dB A-weighted 20 Hz – 20 kHz, analog through
AUDIO INPUTS:
- Input Channels: 4 analog inputs (two unbalanced, two balanced)
- Inputs 1 and 2
- Connectors: RCA Pairs
- Type: Unbalanced , mono-summed
- Sensitivity Options (via configuration utility): -10 dBV
- Input 3
- Connectors: 3-pin Euroblock
- Type: Balanced, mic/line
- Sensitivity Options (via configuration utility): -70 / -60 / -50 / 0 / +4 dBu, -10 dBV with selectable phantom power
- Input 4
- Connectors: 4-pin Euroblock with dedicated GPI for paging
- Type: Balanced mic/line or 600 Ω paging input
- Sensitivity Options (via configuration utility): -70 / -60 / -50 / 0 / +4 dBu, -10 dBV with selectable phantom power
- Input Impedance: 12 kΩ @ 1 kHz (with or without phantom power active)
- Maximum Input Level: +24 dBu (THD+N <=0.3%, 20 to 20kHz, 0 dB gain)
- Equivalent Input Noise: <-119 dBu (22Hz - 20 kHz, 150 Ω input, 64 dB gain)
- Phantom Power: +48V, open circuit, 10mA max per channel, selectable per input, 80mA max across all channels
AUDIO OUTPUTS
CONTROL INPUTS
- Inputs (Control): 8 digital inputs, 2 kΩ internal pull-up resistor to 5 V, Green 3.81 mm pitch connector (9-pin)
- Mute (Control): 1 digital input, 2 kΩ internal pull-up resistor to 5 V, Black 3.81 mm pitch connector (2-pin)
- Digital Input Voltage: 0 V to 3.3 V (threshold voltage = 1.6 V)
CONTROL OUTPUTS
- Outputs (Control): 1 digital outputs, Orange 3.81 mm pitch connector (2-pin)
- Output Voltage High: 8 V (open circuit), 2.5 V @ 10 mA, Low: < 1 V @ 100 mA, push-pull
- Output Current: 10 mA source, 100 mA sink (24 VDC max external supply voltage)
INDICATORS AND CONTROLS
- LED Status Indicators: Power/Status, Signal, Ethernet, AmpLink
- Audio Signal Indication: Green (-60 to -20 dBFS), Yellow (-20 to -2 dBFS), Red (-2 dBFS to Clip)
ELECTRICAL SPECIFICATIONS
- Mains Voltage: 85 VAC-264 VAC 50/60 Hz
- AC Power Consumption: < 30 W typical, over all mains voltages, (PSU Max < 45W)
- Mains Connector: IEC 60320-C14 (Inlet)
- Power Dissipation: ~22 W (75 BTU/Hr, 19 kcal/hr)
PHYSICAL
- Dimensions (H x W x D): 44 × 483 × 215 mm (1.7 × 19 × 8.5 in)
- Operating Temperature: 0 °C - 40 °C (32 °F - 104 °F)
- Cooling System: Active, side venting with fan
- Storage temperature: -40 °C to 70 °C (-40 °F to 158 °F )
- Humidity: 80% (without condensation)
GENERAL
- Configuration Software: Web browser based configuration utility
- Network Control: Ethernet (RJ-45), 10/100 Mbps
