Bose ControlSpace ESP-1240 Network Audio Processor with Rear Ethernet Card


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Dale #:BOSE-6284710010

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  • Includes ControlSpace® fixed I/O Ethernet card.

    The Bose® ControlSpace® ESP-1240 engineered sound processor is an open-architecture DSP with 12x4 fixed analog audio, built-in 8-channel ESPLink output and a rear-panel digital expansion slot offering IP-based network audio and control card options. This model meets today’s strict requirements for high-quality signal processing and control in a cost-effective package. The ESP-1240 is designed for a wide variety of applications ranging from small self-contained projects to larger networked applications.


    • High-quality analog circuitry offers both mic and line-level I/O, operates with ultra-low noise and 115 dB dynamic range
    • Advanced digital signal processing supports audio at 48 kHz sample rate/24-bit, uses a floating-point open architecture DSP and operates at low latencies for sound system precision
    • Expansion card slot supports the use of accessory networking cards, allowing digital audio to be sent and/or received from other compatible products
    • Optional Dante™ media networking card allows single rack-space ESP products to closely integrate with Bose or other manufacturers’ products and systems
    • Bose® ControlSpace® Designer™ software enables a large set of signal processing modules, such as automatic mic mixing, multiband graphic and parametric EQs, Bose loudspeaker libraries, signal generators, routers, mixers, AGCs, duckers, gates, compressors, source selectors and delays
    • Front panel RJ-45 Ethernet connection enables localized configuration and monitoring, while enabling network passthrough when using a rear-panel network option card
    • Built-in Bose ESPLink output sends up to 8 channels of uncompressed digital audio to ESPLink-equipped Bose PowerMatch® amplifiers
    • A variety of control options – ControlSpace ESP products are compatible with the programmable Bose CC-64 and CC-16 controllers and three simplified zone volume interfaces, as well as potentiometers and switches built by other manufacturers
    • Integration with industry-standard control systems using a comprehensive serial protocol through onboard RS-232 and Ethernet ports
  • Integrated DSP
    Signal Processor 32-bit fixed/floating-point DSP + ARM, 456 MHz
    Maximum Calculation 3.6 GIPS / 2.7 GFLOPS
    Delay 43 s
    Audio Latency 860 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/-0.1 dB)
    THD+N 0.002 % 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 (balanced, mic/line level), 16 digital (via option card)
    Connectors, Input 3.81 mm Phoenix Contact®, 6-pin
    Input Impedance 12 kΩ @ 1 kHz (with or without phantom power active)
    Maximum Input Level +24 dBu
    Equivalent Input Noise <-119 dBu (22 - 20 kHz, 150 Ω input, 64 dB gain)
    Phantom Power +48 VDC, 10 mA, selectable per input
    Gain settings 0/14/24/32/44/54/64 dB
    Audio Outputs
    Output Channels 4 analog (balanced, line level), 8 ESPLink, 16 digital (via optional card)
    Connectors, Output 3.81 mm Phoenix Contact®, 6-pin (analog), EIAJ optical (ESPLink)
    Output Impedance 66 Ω
    Maximum Output Level +24 dBu
    Control Inputs
    Inputs (Control) 5 analog or digital inputs, 2 kΩ internal pull-up resistor to 5 V, 3.81 mm Phoenix Contact®, 6-pin
    Analog Input Voltage Range 0 V to 3.3 V (maximum 5 V)
    Digital Input Voltage Range 0 V to 3.3 V (threshold voltage = 1.6 V)
    Control Outputs
    Outputs (Control) 5 digital outputs, 3.81 mm Phoenix Contact®, 6-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, Serial (RS-232 + CC-16)
    Audio Signal Indication Green (-60 to -20 dBFS), Yellow (-20 to -2 dBFS), Red (-2 to 0 dBFS)
    Electrical Specifications
    Mains Voltage 85 VAC-264 VAC 50/60 Hz
    AC Power Consumption < 37 VA typical, over all mains voltages
    Mains Connector IEC 60320-C14 (Inlet)
    Power Dissipation 22 W (75 BTU/hr, 19 kcal/hr)
    Dimensions 1.7" H x 19.0" W x 8.5" D (44 mm x 483 mm x 215 mm)
    Net Weight 5.8 lb (2.6 kg)
    Operating Temperature 32ºF - 104ºF (0ºC - 40ºC)
    Cooling System Active, side venting
    PC Configuration Software ControlSpace® Designer™ software
    Network Control Ethernet (RJ-45),100Mb
    Communications Ports RS-232 (DB9M, DTE), Bose CC-16 (3.81 mm Phoenix Contact®, 3-pin)
    Expansion Slots 1 control/audio network
    Audio Channel Capacity 56 (12x4 analog, 8 ESPLink out, 16x16 digital with expansion card)
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