When you need an advanced intercom system for flexible operation, look to the AVN-TB20AD from Sonifex, a desktop analog and networked talkback intercom with versatile connectivity and RAVENNA/AES67 AoIP functionality. Compatible with both legacy 4-wire audio distribution systems and new AoIP networked audio infrastructure, the AVN-TB20AD delivers professional intercom performance for any broadcast, recording, or TV studio as well as for theaters and OB truck communications. This intercom provides broadcast-quality 24-bit / 48 kHz linear PCM audio distribution and a bright, adjustable OLED screen for navigation.

The AVN-TB20AD features a multitude of useful functions for any communication system, including advanced acoustic echo cancellation, built-in microphone AGC (automatic gain control), 20 illuminated key-cap buttons (three programmable), webserver-based settings adjustment, and wide ranging analog connectivity (XLR, 1/4", and RCA) as well as both RJ45 AES67 or RCA S/PDIF digital audio options. This intercom unit sports both AC and DC power input options for handling any application and supports speaker and microphone mute, callback with source display, and a very large number of headphones and headsets from 32 to 600 Ohms.

For OB Truck/Theater/Inter-Studio Comms    RAVENNA and AES67 AoIP Protocols    20 Illuminated Key-Cap Buttons    Analog 1/4", XLR, and RCA I/O    Digital RJ45 Network and RCA S/PDIF I/O    Broadcast-Quality 24-Bit / 48 kHz LPCM    Automatic Echo Cancel and Microphone AGC    PTP Master or Slave Clocking Function    Clear, Adjustable OLED Display    Dual AC or DC Power Inputs

Sonifex's range of AVN (Audio/Video/Network) talkback/listening/paging intercoms aid communication between studios, stages, theatres, offices and different areas in a facility or building complex. They have both 4-wire and AoIP sources and destinations, and use RAVENNA/AES67 as the audio transport mechanism, allowing simple CAT 5 cabling and expansion. The unit can also act as a PTP master clock or slave clock and supports IEEE1588-2008 PTPv2 media and default profiles.

The AVN-TB20AD is a 20-channel talkback intercom with enough analog and digital I/O to facilitate inter-building communications for a wide range of environments. Connection options include:

• XLR 3-pin electronically balanced microphone input with 48V phantom power
• 1/4" headphone jack and XLR 5-pin headset I/O
• Unbalanced RCA stereo inputs and outputs
• S/PDIF RCA digital input, balanced RJ45 RAVENNA I/O
• 2 x gigabit Ethernet ports and 1 x SFP fibre port
• 15-way D subminiature terminal for GPIO functions
• IEC AC input and 4-pin DC input

Each AVN-TB talkback unit has a built-in webserver for setup and configuration. The webserver is responsive, and resizes depending on the size of your screen, meaning that it can be used on large monitors or small handheld devices such as smartphones. Help information is shown on the right hand side of the screen so it's a good place to go to find out how the unit operates.

The AVN-TB20AD is a 20-button intercom meaning that 20 other stations can be defined, one per button, for communication. Comms can be made as a Talk action, a Listen action or a duplex Talk/Listen action to/from each station. The Page button is used to speak to all stations (or a defined list of stations) and Group Talk functions can be enabled to page particular groups of stations.

Two monitor buttons allow for routing audio directly to the speaker, such as to take an IFB feed or an off-air transmission signal. Signals can be ducked or mixed when a talkback input is received to the speakers or headphones. Three user defined buttons can be programmed for different functions, such as for Group Talk. Buttons are available for microphone mute (cough) and speaker mute actions and these can be controlled remotely by GPI or network commands.

Related Questions and Answers

Q: 1. Can I buy the power supply separate?

A: The power supply can be ordered from your dealer. it is model # PS12AC1A.

Q: 2. will this work to connect Riedel Bolero (4W NSA-002A) to Clear Com MS-702 ?

A: The Hollyland HL-2/4 is compatible with ClearCom systems, but compatibility is not explicitly stated for Riedel intercom units.

Q: 3. On the upper righthand corner of the keyboard are silver keys; do they control volume?

A: The keys on the upper right-hand corner of the keyboard all pertain to audio. They are (from left to right): Previous Track, Play/Pause, Next Track, Mute/Unmute, Volume Down, Volume Up.

Q: 4. Can you use Sennheiser Headphone with boom mic's (Headset) with this machine? is it for one microphone set up only (i.e only one commentator)do you have Australian power plugs for these

A: Yes the THS4 with work with Sennheiser Headsets. It has one mic/headset input.We do not supply Australian power plugs, one can either use an adapter or find their own wall supply that has a 12 V AC 1 Amp output. See our website at a href= http://www.whirlwindusa.com target= _blank www.whirlwindusa.com/a to learn more and download the product manual.

Q: 5. So with this one box i can have two announcers or is it one announcer per box?

A: The THS boxes are designed for use by one announcer.

Q: 6. Does this mouse/keyboard work with an ASUS Chromebox 3?

A: Yes, they will work via attached usb cables.

Q: 7. Does It support Windows 10 ?

A: Yes, this will also work with Windows 10.

Q: 8. Do you need two boxes for the producer to talk to the talent or can you simply plug a microphone into one of the XLR inputs to talk to talent?

A: No you can plug the mic out from the box into one of the mic input channels of the mixer. Then the talent will hear you through the cue mix from the Aux sends.

Q: 9. Can this be powered by an external source (maybe by the USB-C)? A 2 wire interface I want to use does not have it's own power

A: The Hollyland 2/4 Wire Converter for Intercom Systems can only be powered via 2-wire interface connection.

Q: 10. Will this work with an RTS or Telex system?

A: Yes, the Hollyland 2/4 Wire Converter can be used with RTS or Telex systems.