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Manufacturers of Audio Products for AV,
Installed Sound, Broadcast Radio & Broadcast TV

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AVN-TB20AD 20 Button Advanced Talkback Intercom, AoIP Desktop Portal

 

 


AVN-TB20AD
AVN-TB20AD Front
 
AVN-TB20AD Rear
Front View
Rear View
High resolution image of front view >>
 
High resolution image of rear view >>

 

AVN-TB20AD 20 Button Advanced Talkback Intercom, AoIP Desktop Portal

AVN LogoWeb iconThe AVN-TB20AD is a desktop version of the rackmount AVN-TB20AR intercom with a smaller form factor and an elegant sloped front. It has the same feature set and connectivity *.

 

* Except for an additional headset connector on the rear of the AVN-TB20AR.

Category: Audio Over IP Products.
Product Function: An advanced talkback/listening/paging intercom unit to enable voice/audio communication between different areas in a facility or building complex.
Typical Applications: OB truck comms, theatre comms, inter-studio comms in a TV or radio station.

    Features:
  • 20 illuminated key-cap Talk buttons plus Listen & Page buttons.
  • Phone button for remote dialling and control of an external telephone hybrid.
  • Page button and Group Talk facilities.
  • Callback button with callback source display.
  • Three user definable buttons.
  • Speaker & microphone mute buttons.
  • Mic & headset inputs, headphone & speaker outputs.
  • Front panel volume control which operates on speaker/headphone outputs and incoming source levels.
  • +48V phantom power for the mic inputs.
  • Ethernet webserver and front panel control & configuration.
  • Front panel display providing source & destination information.
  • Sources from AoIP, 1 x balanced, 2 x unbalanced or S/PDIF digital inputs.
  • Destinations to AoIP or rear panel balanced & unbalanced outputs.
  • Advanced echo cancellation & mic AGC to prevent acoustic feedback.
  • Dual 1Gb lan ports & 1Gb SFP fibre port.
  • 10 user assignable GPIO ports.
  • GPIO button for triggering external events, via physical GPIO or network commands.
  • Front panel LEDs for network audio presence, Talk activity, AGC activity, clock sync and power supply activity.
  • Two front panel monitor buttons for routing audio directly to the speaker e.g. to take an IFB feed or off-air transmission signal.
  • Ducking or mixing of inputs to speaker/headphones.
  • Dual AC & DC power supply inputs.

 

AVN Talkback Diagram

Ravenna Logo Talkback Intercoms Using Audio Over IP, RAVENNA/AES 67
Our new 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.

 

Webserver Software

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 smart-phones. 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.

AVN screenshot 01

 

AVN screenshot 02

 

AVN screenshot 03

 

AVN screenshot 04

 

AVN screenshot 05

 

AVN screenshot 06

 

Specification For AVN-TB20AD

Audio-Over-IP Specification

Open Standards: RAVENNA, AES67
Device Discovery: Bonjour (mDNS / DNS-SD)
Audio Delivery: RTP/UDP over IPv4 multicast
QoS: DiffServ
Stream Management: RTSP/SDP
Control: Ember+/webserver
Format: Linear PCM 24-bit (L24)
Channels Per Stream: 2
Frames Per Packet: 48
Maximum Streams: RX 25, TX 5 (fixed)
Sample Rate: 48 kHz
 

Timing Synchronisation

Profile Support: Default, media & custom profiles
Timing Protocol: PTPv2, IEEE1588-2008
 

Technical Specification

Microphone and Headset Input

Input Impedance: >2.5kΩ balanced
Gain Range: 0dB to +60dB
0dBFS Line-Up: Adjustable in steps of 3dB from -58dBu to +2dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
Noise: -127dBu, 20kHz BW, Rs=200Ω ref. 76dB gain
   

Unbalanced Line Inputs

Input Impedance: >20kΩ
0dBFS Line-Up: +12dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: <-97dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -100dBFS, 20kHz BW, Rs=200Ω
Crosstalk: <-97dB
   

Balanced Line Inputs

Input Impedance: >20kΩ balanced
0dBFS Line-Up: Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: <-110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
Noise: -110dBFS, 20kHz BW, Rs=200Ω
Crosstalk: <-100dB
Common Mode Rejection: >70dB @ 1kHz
 

Headphone Output

Output Impedance: Drives 150mW into 32Ω to 600Ω headphones
0dBFS Line-Up: +20dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: <-108dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -110dBFS, 20kHz BW
   

Unbalanced Line Outputs

Output Impedance: <50Ω
0dBFS Line-Up: +12dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: <-95dBFS, -30dBFS, 20Hz to 20kHz, unity gain, 20kHz BW
Noise: -100dBFS, 20kHz BW
   

Balanced Line Outputs

Output Impedance: <50Ω balanced
0dBFS Line-Up: Adjustable +15/+18/+20/+22/ +24dBu
Frequency Response: 20Hz to 20kHz, +0/-0.2dB
THD+N: <-110dBFS, -30dBFS, 20Hz to 20kHz, 20kHz BW
Noise: -110dBFS, 20kHz BW, Rs=200Ω
 

Loudspeaker

Power Output: 4W
Volume: Mute to full volume via front panel control
 

Connections

Microphone: XLR-3 pin female (electronically balanced)
Headphone: ¼ inch (6.35mm) stereo jack socket
Headset: 1 x XLR-5 pin female (front electronically balanced input)
Audio Inputs: 2 x unbalanced stereo, RCA phono
1 x S/PDIF, RCA phono
Audio Outputs: 1 x balanced stereo, RJ45
1 x unbalanced stereo, 2 x RCA phono
1 x loudspeaker output
Audio Input/Output: 1 x balanced stereo input or mono input/output, RJ45
GPIO: 15-way ‘D’-type socket
Network: 2 x gigabit Ethernet, RJ45
  1 x SFP fibre
Mains AC Input: Universal filtered IEC, continuously rated 85-264VAC, 47-63Hz, 20W
DC Input: 4 pin 7.5A power jack socket, 9.5-14VDC
Fuse Rating: Anti-surge fuse 2A 20mm x 5mm
   

Equipment Type

AVN-TB20AD: 20 channel desktop talkback intercom control unit with RAVENNA AoIP
 

Physical Specification

Dimensions: (Raw) 29.4cm (W) x 16.5cm (D) x 8.5cm (H)
11.6” (W) x 6.5” (D) x 3.3” (H)
Dimensions (Boxed): 40cm (W) x 28cm (D) x 15cm (H)
16” (W) x 11” (D) x 5.9” (H)
Weight: Nett: 2.5kg Gross: 3.2kg
Nett: 5.5lbs Gross: 7.0lbs
 

Accessories

AVN-DC060: 60W DC power supply for AVN range with KPJX-4S plug
CM-GM2: Professional Gooseneck Condenser Microphone

 

More Product Information

  • Brochure
  • Handbook
  • AVN Guide
  • Accessories & Spares
  • Software Updates
  • Example Of Usage

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Sonifex Ltd. 61 Station Road, Irthlingborough, Northants, NN9 5QE, UK. Tel: +44 (0)1933 650700 Fax: +44 (0)1933 650726 EMail: sales@sonifex.co.uk