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CSP-1248 commercial sound processor

CSP-1248

Commercial Sound Processor

Overview

The DSP for quick-turn installations — Bose Professional 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, 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 — 8 × 4 balanced analog I/O, 4 pair mono-summed RCA inputs, 8 control inputs, 1 control output, mute contact, Ethernet port, and Bose Professional AmpLink connectivity

  • CSP configuration utility with browser-based UI facilitates real-time display and control of levels, routing, thresholds, priorities, scheduled events, Bose Professional 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 Professional 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

  • 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

Designed for a wide range of applications, including:

  • Retail stores

  • Restaurants

  • Hospitality venues

SPecs

Technical Specification

AMPLIFICATION
  • Channel Separation (Crosstalk)

  • < -105 dB at +4 dBu, 1 kHz input signal

  • Dynamic Range

  • > 115 dB, A-weighted, 20 Hz – 20 kHz, analog through

  • 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)

ACOUSTIC ECHO CANCELATION (AEC)
  • AEC-Enabled

  • No

AUDIO INPUTS, ANALOG
  • Channels

  • 12 (4 unbalanced, summed-mono + 8 balanced, mic/line)

  • Connectors

  • (4) RCA stereo pairs, (7) 3-pin Euroblock, (1) 4-pin Euroblock

  • Equivalent Input Noise

  • < -119 dBu at 64 dB gain (150 Ω input, 22 Hz – 20 kHz)

  • Gain Settings

  • -70 dBu, -60 dBu, -50 dBu, 0 dBu, +4 dBu, -10 dBV, with selectable phantom power

  • Input Impedance

  • 12 kΩ at 1 kHz, with or without phantom power

  • Maximum Input Level

  • +24 dBu at 0 dB gain (20 Hz – 20 kHz, THD+N < 0.3%)

  • Phantom Power

  • 48 V, selectable per input, open circuit, 10 mA maximum per channel, 80 mA maximum across all channels

AUDIO INPUTS/OUTPUTS, DIGITAL
  • Channels

  • 8 AmpLink out

  • Connectors

  • (1) RJ-45 AmpLink out

  • Type

  • AmpLink (output)

AUDIO OUTPUTS, ANALOG
  • Channels

  • 4 balanced, line

  • Connectors

  • (4) 3-pin Euroblock

  • Maximum Output Level

  • +24 dBu (22 Hz – 20 kHz, THD+N < 0.3%)

  • Output Impedance

  • 66 Ω

COMPLIANCE
  • EN 54-24 Certified

  • No

CONTROL INPUTS
  • Control Inputs

  • (8) digital, 9-pin Euroblock, 3.81 mm / (1) digital, 2-pin Euroblock, 3.81 mm (mute)

  • Voltage Range, Digital

  • 0 V – 3.3 V (1.6 V threshold)

CONTROL OUTPUTS
  • Control Outputs

  • (1) digital, 2-pin Euroblock, 3.81 mm, detachable

  • Output Current

  • 10 mA source, 100 mA sink (24 VDC maximum external supply voltage)

  • Output Voltage

  • High: 8 V (open circuit), 2.5 V at 10 mA / Low: < 1 V at 100 mA, push-pull

ELECTRICAL
  • Mains Connector

  • IEC 60320-C14 inlet

  • Mains Voltage

  • 85–264 VAC, 50/60 Hz

  • Power Consumption

  • < 30 W typical, over all mains voltages (power supply maximum < 45 W)

  • Power Dissipation

  • 22 W (75 BTU/hr, 19 kcal/hr)

GENERAL
  • Computer Interface Connection

  • RJ-45 (Ethernet, 10/100 Mbps)

INDICATORS AND CONTROLS
  • LED Status Indicators

  • (1) power/status LED, (1) input/output signal LED, (1) Ethernet LED, (1) AmpLink LED

INTEGRATED DSP
  • A/D and D/A Conversion

  • 48 kHz / 24-bit

  • Audio Latency

  • 900 μs, analog input to analog output

  • DSP-Enabled

  • Yes

  • Maximum Calculation

  • 3.6 GIPS / 2.7 GFLOPS

  • Signal Processor/CPU

  • 32-bit fixed/floating-point DSP + Arm 456 MHz processor

  • Sample Rate / Bit Depth

  • 48 kHz / 24-bit

PHYSICAL
  • Colors

  • Black

  • Cooling System

  • Active, side-venting with fan

  • Mounting/Rigging Provisions

  • Standard rack ears

  • Operating Temperature

  • 0 °C to 40 °C (32 °F to 104 °F)

  • Product Dimensions (H×W×D)

  • 1.7 in × 19.0 in × 8.5 in (44 mm × 483 mm × 215 mm)

  • Rack Spaces

  • 1RU

  • Storage Temperature

  • -40 °C to 70 °C (-40 °F to 158 °F)

Mechanical Diagrams

CSP 1428 bottom
Bottom View
CSP 1428 back
Back View
CSP 1428 side
Side View
CSP 1428 top
Top View
CSP 1428 front
Front View
CSP 1428 iso
ISO View

Images

  • Betacon CSP 1248 Right Facing
  • Betacon CSP 1248 Front
  • Betacon CSP 1248 Left Facing
  • Betacon Stacked Right Facing
  • Betacon Stacked Front
  • Betacon Stacked Left Facing

Product codes

  • 808456-1110
  • CSP-1248, 120V, US
  • 808456-2110
  • CSP-1248, 230V, EU
  • 808456-3110
  • CSP-1248, 100V, JP
  • 808456-4110
  • CSP-1248, 230V, UK
  • 808456-5110
  • CSP-1248, 240V, AU

Warranty Period

  • 5 years

Included in Packaging

  • (1) 3-pin Euroblock connector

  • (1) 4-pin Euroblock connector

  • (1) 9-pin Euroblock connector

  • (1) AC power cord

  • (1) CSP-1248

  • (1) installation guide

  • (11) cable ties

  • (2) 2-pin Euroblock connectors

  • (5) 6-pin Euroblock connectors