Data Sheet

PRO.BOSE.COM 2 OF 3
Technical 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 Input 3 Input 4
Connectors RCA pairs 3-pin Euroblock 4-pin Euroblock with dedicated GPI for
paging
Type Unbalanced, mono-summed Balanced, mic/line Balanced mic/line or 600 Ω paging input
Sensitivity Options (via
configuration utility)
-10 dBV -70 / -60 / -50 / +4 / +14 dBu, with
selectable phantom power
-70 / -60 / -50 / +4 / +14 dBu, with select-
able phantom power, or 600 Ω paging
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
Output Channels 10 (2 analog, 8 digital via AmpLink)
Analog Output 1 Analog Output 2 Digital Outputs
Connectors 3-pin Euroblock 3-pin Euroblock RJ-45
Type Balanced line level Balanced line level, or fully-isolated
output for Music On Hold for 600
Ω telephone systems (activated in
configuration utility)
48 kHz, 8-channel digital audio over
AmpLink
Output Impedance 66 Ω
Maximum Output Level +24 dBu (THD+N <=0.3%, 22 Hz to 20 kHz )
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)
Bose CSP-428
commercial sound processor