BOSE PRO
CSP-1248
commercial sound processor
Product Overview
The DSP for quick-turn installations — the Bose CSP-1248 commercial sound
processor is 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.
Key Features
Right-sized connectivity for cost-effective commercial installation — 8 x 4
balanced analog I/O, 4 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 on supported Bose loudspeakers
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
(sold separately) digital zone controllers and ControlSpace Remote app provide
easy volume control and source selection
Applications :
- Retail
- Restaurants
- Hospitality
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 12 analog inputs (four unbalanced, eight balanced)
Inputs 1 – 4 Inputs 5 – 11 Input 12
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 / 0 /+4 dBu
-10 dBV
with selectable phantom power
-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 20 kHz, 0 dB gain)
Equivalent Input Noise <-119 dBu (22 Hz - 20 kHz, 150 Ω input, 64 dB gain)
Phantom Power +48V, open circuit, 10 mA max per channel, selectable per input, 80 mA max across all channels
AUDIO OUTPUTS
Output Channels 12 (4 analog, 8 digital via AmpLink)
Analog Outputs 1 – 3 Analog Output 4 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 × 19.0 × 8.5 in)
Operating Temperature 0 °C - 40 °C (32 °F - 104 °F)
Cooling System Active, side venting with fan
Storage temperature -40 °C - 70 °C (-40 °F - 158 °F )
Humidity 80% (without condensation)