BOSE CSP-428 Commercial Sound Processors Installation Guide

BOSE CSP-428 Commercial Sound Processors Installation Guide

Important Safety Instructions

Please read and keep all safety and use instructions.

This product is intended for installation by professional installers only! This document is intended to provide professional installers with basic installation and safety guidelines for this product in typical fixed- installation systems. Please read this document and all safety warnings before attempting installation. Do not attempt to service this product yourself. Refer all servicing to authorized service centers, installers, technicians, dealers or distributors. To contact Bose Professional or to find a dealer or distributor near you, visit PRO.BOSE.COM.

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with onewider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

WARNINGS/CAUTIONS:
 This symbol on the product means there are important operating and maintenance instructions in this guide.

 This symbol on the product means there is uninsulated, dangerous voltage within the product enclosure that may present a risk of electrical shock.

 Contains small parts which may be a choking hazard. Not suitable for children under age 3.

All Bose products must be installed in accordance with local, state, federal and industry regulations. It is the installer’s responsibility to ensure installation of the loudspeakers and mounting system is performed in accordance with all applicable codes, including local building codes and regulations. Consult the local authority having jurisdiction before installing this product. Unsafe mounting or overhead suspension of any heavy load can result in serious injury or death, and property damage. It is the installer’s responsibility to evaluate the reliability of any mounting method used for their application. Only professionalinstallers with the knowledge of proper hardware and safe mounting techniques should attempt to install any loudspeaker overhead. Do not mount the product in locations where condensation may occur. This product is not intended for installation or use in indoor water facility areas (including, without limitation, indoor pools, indoor water parks, hot tub rooms, saunas, steam rooms and indoor skating rinks). To reduce the risk of fire or electrical shock, do NOT expose this product to rain, liquids or moisture. Keep the product away from fire and heat sources. Do NOT place naked flame sources, such as lighted candles, on or near the product. Do NOT make unauthorized alterations to this product. Do NOT use a power inverter with this product. Do NOT use in vehicles or boats. Provide an earth connection or ensure the socket outlet incorporates a protective earthing connection before connecting the plug to the mains socket outlet.
Dansk: Apparatets stikprop skal tilsluttes en stikkontakt med jord, som giver forbindelse til stikproppens jord.
Suomi: Laite on liitettävä suojamaadoituskoskettimilla varustettuun pistorasiaan.
Norsk: Apparatet må tilkoples jordet stikkontakt. Svenska: Apparaten skall anslutas till jordat uttag. Where the mains plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable. Do not expose products containing batteries to excessive heat (e.g. from storage in direct sunlight, fire or the like). Only use the mounting hardware recommended by the rack manufacturer. Due to ventilation requirements, Bose does not recommend placing the product in a confined space such as in a wall cavity or in an enclosed cabinet. Do not place or install the bracket or product near any heat sources, such as fireplaces, radiators, heat registers or other apparatus (including amplifiers) that produce heat.

Regulatory Information
CAN ICES-3 (A)/NMB-3(A)
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their own expense. Changes or modifications not expressly approved by Bose Corporation could void the user’s authority to operate this equipment.
WARNING: This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. Shielded cables are required to maintain regulatory compliance. This product meets all EN55103-2 immunity requirements for E2 electromagnetic environment

 This product conforms to all applicable EU directive requirements. The complete declaration of conformity can be found at: www.Bose.com/compliance

 This product conforms to all applicable Electromagnetic Compatibility Regulations 2016 and all other applicable UK regulations. The complete declaration of conformity can be found at: www.Bose.com/compliance

 This symbol means the product must not be discarded as household waste, and should be delivered to an appropriate collection facility for recycling. Proper disposal and recycling helps protect natural resources, humanhealth and the environment. For more information on disposal and recycling of this product, contact your local municipality, disposal service, or the shop where you bought this product.

China Restriction of Hazardous Substances Table

Names and Contents of Toxic or Hazardous Substances or Elements

| Toxic or Hazardous Substances and Elements
Part Name| Lead (Pb)| Mercury (Hg)| Cadmium (Cd)| Hexavalent (CR(VI))| Polybrominated Biphenyl (PBB)| Polybrominated diphenylether (PBDE)
PCBs| X| O| O| O| O| O
Metal Parts| X| O| O| O| O| O
Plastic Parts| O| O| O| O| O| O
Speakers| X| O| O| O| O| O
Cables| X| O| O| O| O| O
This table is prepared in accordance with the provisions of SJ/T 11364.O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement of GB/T 26572.| ****
X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement of GB/T 26572.

Taiwan Restriction of Hazardous Substances Table

Equipment name: CSP-428, CSP-1248, Type designation: 808934, 808935

| Restricted substances and its chemical symbols
Unit| Lead (Pb)| Mercury (Hg)| Cadmium (Cd)| Hexavalent chromium (Cr+6)| Polybrominated biphenyls (PBB)| Polybrominated diphenyl ethers (PBDE)
PCBs| –| ○| ○| ○| ○| ○
Metal Parts| –| ○| ○| ○| ○| ○
Plastic Parts| ○| ○| ○| ○| ○| ○
Speakers| –| ○| ○| ○| ○| ○
Cables| –| ○| ○| ○| ○| ○
Note 1: “○” indicates that the percentage content of the restricted substance does not exceed the percentage of reference value of presence. Note 2: The “−” indicates that the restricted substance corresponds to the exemption.

Overview

Bose Professional CSP-1248 and CSP-428 commercial sound processors offer right-sized I/O and simplified configuration for small-to-medium scale projects. They are designed to serve as standalone DSP in commercial applications such as retail stores and restaurants, or any public place where modest processing, high-quality sound and facilitated installation is desired. Models feature a quick setup workflow, using an integrated web server with browser-based configuration utility, for making common tasks intuitive and logical – ultimately reducing installation time. Integrated Bose-proprietary algorithms offer predicable control options, while compatible interfaces like ControlCenter digital controllers and ControlSpace Remote offer reliable, convenient operation for end users.

Product Features

Right-sized connectivity for cost-effective commercial installation options. Models feature balanced analog I/O (CSP-1248: 8 × 4, CSP-428: 2 × 2), mono-summed RCA inputs (CSP-1248: 4 pair, CSP-428: 2 pair), 8 control inputs, 1 control output, a mute contact, Ethernet network (for configuration or wall control) and Bose AmpLink.
CSP configuration utility provides an intuitive setup interface via the CSP’s integrated web-server so that you can quickly configure the CSP using a web browser.
Rear-panel Ethernet connection provides a local port for configuration via computer and a wider network connection for control from compatible ControlCenter digital wall controllers or ControlSpace Remote clients
AutoVolume compensation continuously adapts zone output level based on the ambient noise of an active space, as to maintain consistent program material (requires the Bose AVM-1 sense microphone accessory)
Opti-voice paging provides a smooth transition between the music and page signals
Opti-source level management monitors the input level of up to four sources. Source levels are continually adjusted to maintain a consistent volume level among different source.
SmartBass equalization enhances the low-frequency output of select loudspeakers
Bose AmpLink output for simplified digital audio connectivity to supported power amplifiers

Package Contents

AC power cord

|

1

|

1

Cable ties|

11

|

11

2-pin Euroblock (orange)| 1| 1

2-pin Euroblock (black)| 1| 1

3-pin Euroblock (green)| 1| 1

4-pin Euroblock (green)| 1| 1

6-pin Euroblock (orange)| 1| 2

6-pin Euroblock (green)| 0| 3

9-pin Euroblock (green)|

1

|

1

Available Accessories

The CSP-428 and CSP-1248 are compatible with Bose ControlCenter digital zone controllers and the AVM-1 sense microphone. Below is a list of compatible devices:

079042 (EU, white)PC 079070 (EU, black)PC 079062 (JP, white)PC 079060 (JP, black)| Uses Network port. Requires additional Power-over-Ethernet (PoE) switch.
ControlSpace ControlCenter CC-2D| PC 079063 (US, white)PC 079043 (US, black)PC 079071 (EU, white)PC 079049 (EU, black)PC 079066 (JP, white)PC 079046 (JP, black)| Uses Network port. Requires additional Power-over-Ethernet (PoE) switch.
ControlSpace ControlCenter CC-3D| PC 079061 (US, white)PC 079047 (US, black)PC 079053 (EU, white)PC 079058 (EU, black)PC 079041 (JP, white)PC 079064 (JP, black)| Uses Network port. Requires additional Power-over-Ethernet (PoE) switch.
AVM-1 sense microphone| PC 079067 (white)| Uses analog input with Euroblock connector.

Product Details

Front Panel

LED Indicators

Power:| Power or fault state indication.| Green: Power on, normal operation Yellow: Powering on Red: Error (see Troubleshooting on page 19)
---|---|---
Signal:| Signal status indication of all audio input and output channels in order of signaling priority.| Green: Signal present (–60 dBFS to –20 dBFS) Yellow: Signal level optimal (–20 dBFS to –2 dBFS) Red: Clipping (–2 dBFS to 0 dBFS)
Ethernet:| Connection status indication of Ethernet ports.| Green: Ethernet link established Yellow: Active transmission/reception
AmpLink:| Connection status indication of AmpLink-equipped amplifiers.| Green: AmpLink is active

Rear Panel

1. RCA Inputs: Summed mono inputs for analog audio connections. See Installation > Analog Audio Connections (page 14) for more information.

2. Analog Inputs: Mic/line-level inputs for balanced analog audio signals. To integrate the CSP into a telephone switching system, use the PBX (private branch exchange) terminal. To use the built-in AutoVolume feature, connect one or more Bose AVM-1 sense microphones to any of these inputs (see the AVM-1 installation guide for more information). See Installation > Analog Audio Connections (page 14) for more information.
   Note: The AutoVolume feature is optimized for use with Bose AVM-1 sense microphones only.

3. Analog Outputs: Line-level outputs for balanced analog audio signals. See Installation > Analog Audio Connections (page 14) for more information.

4. AmpLink Out port: RJ-45 connection for use with AmpLink-equipped amplifiers. Use shielded EIA/TIA 568B straight Cat 5 cables (or equivalent) to make this connection. See Installation > AmpLink Connection (page for more information. CAUTION: Shielded EIA/TIA 568B straight Cat 5 cables (or equivalent) are required for proper AmpLink operation. Unshielded cables are not supported and may cause AmpLink audio to operate improperly. Do not connect an AmpLink port to an Ethernet-based network.

5. Control Inputs: Eight inputs for control of push-to-talk (PTT) paging. See Installation > Control I/O Connections > Control Inputs (page 16) for more information.

6. Control Output: One output for general purpose control with ControlSpace Remote. See Installation > Control I/O Connections > Control Output (page 16) for more information.

7. Mute port: Contact closure connection where a short across the mute connector will mute all outputs. See Installation > Mute with Standard Contact Closure (page 15) for more information.

8. Service port: For Bose service use only.

9. Network port: Ethernet network connection for up to 16 ControlCenter digital zone controllers via a PoE switch. See Installation > Network Connection (page 17) for more information.

10. Power input: Power cord connection (IEC 60320-C14 inlet). See Installation > Power Connection (page 17) for more information.

Installation

Rack-mounting
The CSP-428 and CSP-1248 fit standard 48-centimeter (19-inch) rack equipment, occupying one rack unit (1 RU) in height and requiring a mounting depth of 208 millimeters (8.2 inches) from the front rack rail. Use four fasteners with washers (not included) to mount the CSP. The CSP-428 and CSP-1248  se active side ventilation and can safely operate in ambient conditions from 0 °C to 40 °C (32 °F to 104 °F). See Technical Specifications (page 20) for power dissipation ratings for each model.

Analog Audio Connections
The CSP-428 and CSP-1248 include two types of analog inputs for audio devices: summed mono RCA connectors and balanced Euroblock connectors. The analog outputs are balanced Euroblock connectors. The termination end of each Euroblock connector includes printed terminal block descriptions. The following diagrams show the recommended balanced/unbalanced wiring between the audio connectors on the processor and common audio connectors to external audio components. To integrate the processor into a telephone switching system, use the PBX (private branch exchange) terminal.

AVM-1

To use the built-in AutoVolume feature, use one or more Bose AVM-1 sense microphones with the CSP. Insert the −, +, and ground wires connected to the AVM-1 to the corresponding terminals of a Euroblock included with the Bose CSP. Connect that Euroblock to an analog input on the rear panel of the Bose CSP. See the AVM-1 installation guide for more information.

Note: The AutoVolume feature is optimized for use with Bose AVM-1 sense microphones only

AmpLink Connection

The AmpLink Out port provides a low-latency method for transporting up to eight channels of uncompressed digital audio to AmpLinkcompatible amplifiers. For simplified audio distribution, the CSP-428 and CSP-1248 can also serve as centralized input-routing/mixing points to one or more AmpLink-compatible amplifiers when installed in the same rack. Each amplifier must have a built- in AmpLink port or an AmpLink 24-channel input card installed. Use shielded EIA/TIA 568B straight Cat 5 cables (or equivalent) to make this connection. You can daisy-chain up to eight AmpLink-compatible products with up to 10 meters (32 feet) of cable between each product.

CAUTION: Shielded EIA/TIA 568B straight Cat 5 cables (or equivalent) are required for proper AmpLink operation. Unshielded cables are not supported and may cause AmpLink audio to operate improperly. Do not connect an AmpLink port to an Ethernet-based network.

CC-1D/CC-2D/CC-3D

The ControlCenter CC-1D, CC-2D, and CC-3D can be used for volume and mute control. The CC-2D and CC-3D can also be used for source control. You can connect these controllers to the Network port via aPoE network switch (not included). You can connect up to 16 controllers or up to 32 controllers, depending on the amplifier you are using with the CSP. Use a foiled or unshielded twisted-pair (F/UTP) Cat 5e cable (not included) to connect this port on each CSP to your network or computer. Make this connection directly to the CSP or through a switched Ethernet network.
See Overview > Available Accessories (page 11) for a list of compatible accessories.

Mute with Standard Contact Closure

The CSP-428 and CSP-1248 are designed to mute all outputs either when the Mute contacts are either shorted together or opened, depending on how the CSP is configured. The default state is Normally Open (NO), where a short across the mute connector will mute all outputs. Using the CSP integrated web server, the mute polarity can be inverted to Normally Closed (NC), where an open across the mute connector will mute all outputs.

Note: All LED indicators will blink red when the amplifier is muted from software or from the rear panel Mute connector. Use the included black 2-pin Euroblock to make this connection.

Control I/O Connections
The CSP can interface with external control hardware via the eight control inputs and one control output.

Control Inputs
You can connect the control inputs to external hardware such as switches to control push-to-talk (PTT) paging. Use the CSP configuration utility to easily assign how the paging functions work.

Using Switches
You can use toggle switches or push-buttons with control inputs. Each input terminal is tied to an internal two-kiloohm pull-up resistor so that external switches can be wired directly from input to ground.

Control Output
Note: The control output is intended for use with ControlSpace Remote only.

Current Source Devices
The control output can power some devices such as LEDs and lowcurrent relays directly. The maximum source current is 10 milliamps. Source Limits: Open circuit, ≤ 8 VDC; 2.5 VDC and 10 mA (maximum) for external devices.

Current Sink Devices
Devices that require more current than is available from a currentsource configuration can use the control output to sink up to 100 milliamps when used with external power supplies. Use proper precautions when driving inductive loads. Sink Limits: 100 mA (maximum). External supplies must be ≤ 24 VDC

Network Connection
The CSP-428 and CSP-1248 include a Network port on the rear panel for network connection. Use a foiled or unshielded twisted-pair (F/UTP) Cat 5e cable (not included) to connect this port on each CSP to your network or computer. Make this connection directly to the CSP or through a switched Ethernet network.

Power Connection
The CSP-428 and CSP-1248 can operate with AC mains line voltages from 85 volts to 264 volts at 50 Hz/60 Hz over a detachable IEC power cord. Power consumption is 37 volt-amps at an ambient temperature of 40 °C (104 °F). To power on the CSP, use the included power cord to connect the processor’s power inlet to a power outlet. After powering on, the boot time may be as long as 40 seconds. The processor is fully operable when the Power LED on the front panel is lit solid green

Accessing the CSP Configuration Utility
To set the functions of the CSP, follow the steps below to access the CSP configuration utility hosted on its integrated web server.
Note: The integrated web server is compatible only with Google Chrome, Mozilla Firefox, Microsoft Edge, and Internet Explorer.

1. Visit bosepro.link/cspsw and download the Discovery Tool application.
2. Connect your computer to the Network port of your CSP (see Network Connection above).
3. Install and open the Discovery Tool application.
4. In the application, click Discover. The IP address of each CSP in the network will appear in the window.
5. Enter the network address of the desired CSP into the address bar of your web browser, and press Enter. The CSP configuration utility will appear in the browser window.

To learn more, access the help system from within the interface of the CSP configuration utility

Maintenance

Firmware & Software Updates
Bose periodically releases updates for the CSP firmware. Follow the steps below to update the firmware of your CSP.

1. Open the CSP configuration utility (see Accessing the CSP Configuration Utility on page 17).
2. Access Settings > Firmware > Select File.
3. Select the firmware file on your computer, and then click Open.
4. In the browser window, click Update.

CAUTION: Do not disconnect the CSP from your computer until you see a message that the update is complete. Interrupting the connection can damage the firmware on the CSP.

Battery Replacement
The CSP-428 and CSP-1248 each contain a replaceable lithium battery for maintaining the real-time clock (RTC) capability of the system. This battery lasts at least 10 years from the time of production and rarely requires replacement. This battery should be replaced by a professional technician only

Troubleshooting

power cord to connect the processor’s power inlet (on the rear panel) to a power outlet.Make sure that the mains power is active.
The power is on, but there is no sound.| Verify that there is an input signal from the source using the CSP configuration utility. The audio input metering should be in the green/yellow band.Verify that there is an output signal. The audio output signal metering should be in the green/yellow band.
The sound is distorted.| Check the audio input signal indicators using the CSP configuration utility. If any of the audio input metering is in the red band, reduce the gain of the audio input or the output volume of the audio device.If the input and output indicators are green, and if you are sure the output volume of the audio device is undistorted when it enters the processor, make sure that the loudspeakers are not being overdriven or are not damaged.
The Power LED is red.| Disconnect the power cord from the power outlet, and then reconnect it.If the issue continues, call your Bose Professional sales/support representative.
The Ethernet LED is off.| Make sure that the processor’s Network port is securely connected to a computer, hub, or switch using a foiled or unshielded twisted-pair (F/UTP) Cat 5e cable (not included).Make sure that the computer’s Ethernet connection is enabled. If it is disabled, the Link LED on the computer will probably be off.If the processor is connected to a hub or switch, make sure the Link LED on the hub or switch is on.
The Ethernet LED is on but devices cannot communicate with processor.| If you recently connected the processor to a power outlet, wait 40 seconds to make sure that the processor is fully turned on. The Power LED should be solid green.Make sure that the network settings on the TCP/IP Ethernet device you are using on the computer are set correctly:If you are not using a DHCP server, manually set the computer’s IP address to an unused IP address (e.g. 192.168.0.2).The default IP subnet mask should be set to 255.255.255.0. Open the firewall settings on the computer, and unblock all ports.Make sure that there is not another processor connected with the same address. If you are not sure, disconnect a processor, scan for the other processor, and then change its address. Repeat with the second processor.

Technical Information

Integrated DSP|
---|---
Signal Process/CPUMaximum CalculationAudio LatencyA/D and D/A ConvertersSample Rate| 32-bit fixed/floating-point DSP + Arm® processor, 456 MHz3.6 GIPS / 2.7 GFLOPS900 μs (analog in to analog out)24-bit48 kHz|
Audio Performance|
Frequency ResponseTHD+NChannel Separation (Crosstalk)Dynamic Range| 20 Hz to 20 kHz (±0.5 dB)< 0.01% at +4 dBu (A-weighted/20 Hz to 20 kHz)< –105 dB at +4 dBu input and output level, 1 kHz115 dB A-weighted 20 Hz to 20 kHz, analog through, 600 Ώ load|
Audio Inputs|
Inputs (balanced)Inputs (unbalanced)Connectors, InputInput ImpedanceMaximum Input LevelEquivalent Input NoisePhantom PowerPre-Gain Settings| 2 analog (balanced, Mic/Line Level/Page-In)2 analog (unbalanced, RCA Line-In, summed to mono)Balance Input: green 3.81 mm pitch (3-pin/6-pin) Page-In: green 3.81 mm pitch (4-pin) Unbalanced Input: red/white RCA connector12 kΩ at 1 kHz (with or without phantom power active)+24 dBu (THD+N £0.3%, 20 Hz to 20 kHz, 0 dB gain)< –117 dBu (22 Hz to 20 kHz, 150 Ω input, 64 dB gain)+48V, open circuit, 10 mA max per channel, selectable per input, 80 mA max across all channels0/14/24/32/44/54/64 dB|
Audio Outputs|
OutputsConnectors, OutputOutput ImpedanceMaximum Output Level| 2 analog (balanced, Line Level), 8 digital (AmpLink output)Analog Output: orange 3.81 mm pitch (6-pin)Digital Output: RJ-45 without LED (AmpLink output)66 Ω+24 dBu (THD+N £0.3%, 22 Hz to 20 kHz )|
Control Inputs|
Inputs (Control)Mute (Control)Analog Input VoltageDigital Input Voltage| 8 analog inputs, 2 kΩ internal pull-up resistor to 5 V, green 3.81 mm pitch connector (9-pin)1 analog input, 2 kΩ internal pull-up resistor to 5 V, black 3.81 mm pitch connector (2-pin)0 V to 3.3 V (maximum 5 V)0 V to 3.3 V (threshold voltage = 1.6 V)|
Control Outputs|
Outputs (Control)Output VoltageOutput Current| 1 digital output, orange 3.81 mm pitch connector (2-pin)High: 8 V (open circuit), 2.5 V at 10 mA, Low: < 1 V at 100 mA, push-pull10 mA source, 100 mA sink (24 VDC max external supply voltage)|
| Indicators and Controls
| LED Status IndicatorsAudio Signal Indication| Power/Status, Signal, Ethernet, AmpLinkGreen (–60 to –20 dBFS), yellow (–20 to –2 dBFS), red (–2 dBFS to Clip)
| Electrical
| Mains VoltageAC Power ConsumptionMains ConnectorPower Dissipation| 85 VAC to 264 VAC, 50/60 Hz< 30 W typical, over all mains voltages, (PSU Max < 45 W)IEC 60320-C14 (inlet)~22 W (75 BTU/Hr, 19 kcal/hr)
| Physical
| Dimensions (H × W × D)Operating TemperatureCooling SystemStorage TemperatureHumidity| 44 mm × 483 mm × 215 mm (1.7 in × 19.0 in × 8.5 in)0 °C to 40 °C (32 °F to 104 °F)Active, side venting with fan–40 °C to 70 °C (–40 °F to 158 °F)80% (without condensation)
| General
| Configuration SoftwareNetwork Control| Integrated web server with configuration utilityEthernet (RJ-45), 10/100MBase-T

CSP-1248

Integrated DSP|
---|---
Signal Process/CPUMaximum CalculationAudio LatencyA/D and D/A ConvertersSample Rate| 32-bit fixed/floating-point DSP + Arm®, 456 MHz3.6 GIPS / 2.7 GFLOPS900 μs (analog in to analog out)24-bit48 kHz|
Audio Performance|
Frequency ResponseTHD+NChannel Separation (Crosstalk)Dynamic Range| 20 Hz to 20 kHz (±0.5 dB)< 0.01% at +4 dBu (A-weighted/20 Hz to 20 kHz)< –105 dB at +4 dBu input and output level, 1 kHz115 dB A-weighted 20 Hz to 20 kHz, analog through, 600 Ώ load|
Audio Inputs|
Inputs (balanced)Inputs (unbalanced)Connectors, InputInput ImpedanceMaximum Input LevelEquivalent Input NoisePhantom PowerPre-Gain Settings| 8 analog (balanced, Mic/Line Level/Page-In)4 analog (unbalanced, RCA Line-In, summed to mono)Balance Input: green 3.81 mm pitch (3-pin/6-pin) Page-In: green 3.81 mm pitch (4-pin) Unbalanced Input: red/white RCA connector12 kΩ at 1 kHz (with or without phantom power active)+24 dBu (THD+N £0.3%, 20 Hz to 20 kHz, 0 dB gain)< –117 dBu (22 Hz to 20 kHz, 150 Ω input, 64 dB gain)+48V, open circuit, 10 mA max per channel, selectable per input, 80 mA max across all channels0/14/24/32/44/54/64 dB|
Audio Outputs|
OutputsConnectors, OutputOutput ImpedanceMaximum Output Level| 2 analog (balanced, Line Level), 8 digital (AmpLink output)Analog Output: orange 3.81 mm pitch (6-pin)Digital Output: RJ-45 without LED (AmpLink output)66 Ω+24 dBu (THD+N £0.3%, 22 Hz to 20 kHz )|
Control Inputs|
Inputs (Control)Mute (Control)Analog Input VoltageDigital Input Voltage| 8 analog inputs, 2 kΩ internal pull-up resistor to 5 V, green 3.81 mm pitch connector (9-pin)1 analog input, 2 kΩ internal pull-up resistor to 5 V, black 3.81 mm pitch connector (2-pin)0 V to 3.3 V (maximum 5 V)0 V to 3.3 V (threshold voltage = 1.6 V)|
Control Outputs|
Outputs (Control)Output VoltageOutput Current| 1 digital output, orange 3.81 mm pitch connector (2-pin)High: 8 V (open circuit), 2.5 V at 10 mA, Low: < 1 V at 100 mA, push-pull10 mA source, 100 mA sink (24 VDC max external supply voltage)|
Indicators and Controls|
LED Status IndicatorsAudio Signal Indication| Power/Status, Signal, Ethernet, AmpLinkGreen (–60 to –20 dBFS), yellow (–20 to –2 dBFS), red (–2 dBFS to Clip)|
| Electrical
| Mains VoltageAC Power ConsumptionMains ConnectorPower Dissipation| 85 VAC to 264 VAC, 50/60 Hz< 30 W typical, over all mains voltages, (PSU Max < 45 W)IEC 60320-C14 (inlet)~22 W (75 BTU/Hr, 19 kcal/hr)
| Physical
| Dimensions (H × W × D)Operating TemperatureCooling SystemStorage TemperatureHumidity| 44 mm × 483 mm × 215 mm (1.7 in × 19.0 in × 8.5 in)0 °C to 40 °C (32 °F to 104 °F)Active, side venting with fan–40 °C to 70 °C (–40 °F to 158 °F)80% (without condensation)
| General
| Configuration SoftwareNetwork Control| Integrated web server with configuration utilityEthernet (RJ-45), 10/100MBase-T

References

• Bose Professional

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