Ecler BOB-22 Dante/AES67 Digital Audio Interface
User Manual
1. Precautions
1.1 Important Note
CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN.
WARNING: SHOCK HAZARD - DO NOT OPEN. AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR.
The lightning flash symbol with an arrowhead, within an equilateral triangle, warns the user of the presence of uninsulated “dangerous voltage” inside the product enclosure that is sufficient to constitute a risk of electric shock to persons.
The exclamation point in an equilateral triangle warns the user of important operating and maintenance (routine maintenance) instructions in the documents accompanying the appliance.
WARNING (if applicable): Terminals marked with the symbol ⚡ may have sufficient magnitude to constitute an electric shock hazard. External wiring connected to the terminals requires installation by a trained person or the use of ready-made cables or cords.
WARNING: To prevent fire or electric shock, do not expose this appliance to rain or humidity.
WARNING: Class I construction appliances must be connected using a grounded power plug.
WARNING: Ecler products have a long lifespan of more than 10 years. This product must not be disposed of as unsorted municipal waste under any circumstances. Take it to the nearest electrical and electronic waste treatment center.
1.2 Important Safety Instructions
- Read these instructions.
- Keep these instructions.
- Heed all warnings.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are for your safety. If the provided plug does not fit into your outlet, ask an electrician to replace your obsolete outlet.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Use only attachments/accessories recommended by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods.
- Refer all servicing to qualified service 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.
- Disconnecting from the mains: pressing the POWER switch disables the amplifier’s functions and indicators, but the apparatus is only completely disconnected from the mains by unplugging the power cord. This is why you must always have easy access to it.
- This apparatus must be grounded via its power cord.
- Part of the product labeling is located on the base/rear of the product.
- This apparatus shall not be exposed to dripping or splashing, and no objects filled with liquids, such as vases, shall be placed on the apparatus.
1.3 Cleaning
Clean the unit with a clean, soft, dry cloth or slightly damp with only water and neutral liquid soap, then wipe it with a clean cloth. Ensure that no water enters the unit through its openings. Never use alcohol, benzine, solvents, or abrasive substances.
NEEC AUDIO BARCELONA, S.L. disclaims all responsibility for damages that may be caused to persons, animals, or objects due to non-compliance with the above warnings.
2. Warranty and Environment
Thank you for choosing our Ecler BOB-22 unit! We appreciate your trust.
It is VERY IMPORTANT to carefully read this user manual and fully understand its content before making any connections to maximize your use and get the best performance from this equipment.
To ensure the proper functioning of this unit, we recommend that its maintenance be carried out by our authorized technical services.
All ECLER products come with a warranty. Please refer to www.ecler.com or the warranty card included with this unit to find out its validity period and conditions.
Ecler is fully committed to preserving the environment and the planet's balance, encouraging energy savings, and reducing CO2 emissions. Recycling materials and using non-polluting components are also among the main priorities of our environmental mission.
Ecler has evaluated and analyzed the environmental impacts of all processes involved in the production of this product, including its packaging, and has mitigated, reduced, and/or compensated for them.
3. Package Contents
- 1 BOB-22 unit.
- 4 rubber feet.
- 2 Euroblock connectors (green).
- 2 Euroblock connectors (blue).
- 1 half-rack faceplate adapter.
- 4 washers (to be used when mounting the unit to the front of a rack to avoid marking the unit's side brackets).
- Quick start guide.
- Warranty card.
4. Description and Characteristics
The BOB-22 is a digital audio interface with 2 line/microphone level audio inputs, 2 line level audio outputs, and a Dante/AES67 (Audio Over IP) interface. It allows converting 2 Dante/AES67 channels into 2 line level analog audio output signals and vice versa, by converting 2 line/microphone analog audio inputs into 2 Dante/AES67 channels for transmission over an Ethernet network.
The unit features the PoE (Power over Ethernet) function for DC power supply directly from PoE-compatible Ethernet switches. An external 24 VDC power supply is available as an option (sold separately).
The BOB-22 is a generic Dante/AES67 unit that can be used in combination with compatible Dante EclerNet / EclerPLEX / VIDA / HALO units from Ecler, or with any other third-party Dante/AES67 compatible unit, but it is not a native EclerNet / EclerPLEX guest unit.
4.1 Main Characteristics
- Ethernet Interface.
- Euroblock connectors for analog audio inputs and outputs.
- Reception of 2 line/microphone level analog audio inputs.
- 2 line level analog audio outputs.
- 2x2 digital audio channels (transmission and reception) in Dante/AES67 format.
- Power supply via Ethernet (PoE) capability.
- Compact format.
- Half-rack faceplate adapter included.
5. Installation and Connection
5.1 Installation
The BOB-22 has been specially designed for 19" rack mounting, occupying one unit of height and half a unit of width. It includes an adapter that allows mounting a half-rack unit in a standard width rack (19"). Please follow the installation instructions for the adapter below.
? The unit generates heat, so it is very important that it is not completely enclosed or exposed to extreme temperatures.
⚠️ If the installation includes several heat-generating units in the same rack or is done in closed cabinets with doors, it is highly recommended to equip these with forced upward ventilation by installing fans at the top and bottom. This upward ventilation flow will promote heat dissipation inside.
5.1.1 Half-rack adapter mounting
The BOB-22 includes an adapter that allows mounting a half-rack unit in a standard width rack (19").
Step 1: Unscrew the 3 screws from one of the side brackets.
Step 2: To attach the included half-rack faceplate adapter, use the 3 screws previously removed.
5.2 Connections
5.2.1 Analog Audio Inputs
The BOB-22 has 2 balanced analog inputs on the rear panel that accept line or microphone level signals and are compatible with phantom power.
The input signal connectors are 3-pole screw terminals. The wiring is:
- Signal direct or hot: Terminal +
- Signal inverted or cold: Terminal -
- Ground: Terminal ⊥
⚠️ For unbalanced connection, short the ⊥ pin to the - pin as shown in the image.
Microphone Signal: The 2 channels feature a Euroblock connection and are designed for a nominal input level of -50 dBV to 0 dBV, with adjustable gain via the GAIN control on the rear panel.
Microphone connection is shown in the following diagram:
Balanced:
- 1. Hot (+18V)
- 2. Cold (+18V)
- 3. Ground (0V) (Phantom ON)
Unbalanced:
- 1. Hot (+18V)
- 2-3. Ground (0V) (Phantom ON)
? Microphones should be low impedance (200 to 600 Ω) and mono.
Each analog input has its own gain control.
The BOB-22 features phantom power for condenser microphones, which can be activated by an internal jumper (see diagram below).
? Phantom power is disabled by default (factory setting).
5.2.2 Analog Audio Outputs
The BOB-22 has 2 balanced analog outputs on the rear panel that provide line level signals.
The output signal connectors are 3-pole screw terminals. The wiring is:
- Signal direct or hot: Terminal +
- Signal inverted or cold: Terminal -
- Ground: Terminal ⊥
⚠️ For unbalanced connection, short the ⊥ pin to the - pin as shown in the image.
5.2.3 Ethernet / Dante/AES67 Port
The RJ-45 type ETHERNET connector on the rear panel allows connecting the unit to an Ethernet network.
The BOB-22 allows transmission and reception of 2x2 Dante/AES67 channels.
For more information on network configuration and Dante routing, please refer to the chapter “Network configuration and Dante/AES67 routing”.
6. Startup and Operation
If the Ethernet switch does not provide DC power via PoE, connect the external power supply (sold separately) to the DC IN connector on the rear panel.
? To avoid hum, do not let the power cord run alongside shielded cables carrying the audio signal.
When the front panel ON LED is lit green, the unit is operational.
7. Network Configuration and Dante/AES67 Routing
The routing of Dante/AES67 digital audio signals over the Ethernet network, as well as the network configuration of the Dante/AES67 ports (IP address, mask, etc.), are managed by the Dante Controller software application.
For complete information, refer to the developer's documentation: www.audinate.com
AES67 is enabled by default. Dante units cannot receive AES67 streams from other Dante units.
The unit ships from the factory with DHCP service enabled, meaning the unit will automatically obtain an IP address dynamically provided by a local network DHCP server if connected. However, specific static network parameters can be configured with Dante Controller, by accessing the window shown in this example:
The default unit name (the name under which it appears in Dante Controller) is always set at the factory to BOB-22-nnnnnn, where “nnnnnn” corresponds to the last 6 digits of the MAC address of each unit. In any case, this name can be changed by accessing this window:
The routing of Dante/AES67 transmit and receive channels can be defined in the Routing window, which also displays all Dante-compatible units detected on the network:
8. Front Panel Functions
8.1 Front Panel
The BOB-22 front panel features the following indicators and controls:
- ON: The green LED lights up when the unit is powered on.
- Dante/AES67 LED Indicator:
- Solid red LED: during the startup process.
- Solid orange LED: during PTP (Precision Time Protocol) network clock synchronization.
- Solid green LED: when the unit is configured as a Dante/AES67 slave.
- Flashing green LED: when the unit is configured as a Dante/AES67 master.
- OUT: Output signal/clipping indicators x2
- Green LED: signal presence
- Red LED: clipping
- IN: Input signal/clipping indicators x2
- Green LED: signal presence
- Red LED: clipping
8.2 Rear Panel
- 24V DC IN Jack.
- RJ-45 Ethernet/Dante Connector.
- Euroblock OUT connectors x2.
- GAIN control knob x2.
- Euroblock IN connectors x2.
9. Technical Data
9.1 Technical Specifications
| BOB-22 | |
|---|---|
| Audio Converters | Sampling rate: 48 kHz Resolution: 24 bit Latency: ADC 0.81 ms, DAC 0.56 ms, Total 1.37 ms Frequency response: 0-20 kHz Dynamic range: ADC:110dB, DAC:115dB |
| Analogue Audio Input Ports | Number of input ports: 2, MIC/LINE level Connection type: Euroblock, 3-pin, balanced Input sensitivity: -50dBV to +0dBV Input impedance: > 4 kΩ Max input level: +18dBV = +20dBu THD + Noise: THD+Noise @ 1kHz, 0dBV input (line) <0.005% THD+Noise @ 1kHz, -40dBV input (mic.) <0.40% CMRR: 56dB typ. Phantom power: +48VDC, Internal jumper activation |
| Analogue Audio Output Ports | Number of output ports: 2, LINE level Connection type: Euroblock, 3-pin, balanced Max output level: +18dBV = +20dBu Output impedance: 316 ohms Crosstalk: Better than 95 dB |
| Audio Over IP | Protocols: Dante® / AES67 (2/2 flows) Number of digital input ports: 2 Number of digital output ports: 2 Interfaces: 1 x RJ-45 |
| Connectivity | Ethernet: 1 x RJ-45 connector, 10/100Mb, 1GB Auto X-Over Programming and control: Dante® Controller |
| Electrical | Power supply: 24VDC External PSU (sold separately) Secondary power supply: PoE: class 0 802.3af Poe PD compliant AC mains requirement: 90-265VAC @ 50-60Hz (External PSU: 24VDC) Power consumption: 14 VA / 8 W Ventilation: Passive |
| Physical | Operating temperature: Min: -10°C, 14°F / Max: 40°C, 104°F Operating humidity: <85% HR Storage temperature: Min: -10°C, 14°F / Max: 40°C, 104°F Storage humidity: <90% HR Installation options: Desktop, 19" racks (1RU) |
9.2 Diagram with Dimensions
All measurements are in mm.
