Sielco EXC 1600GX Original price was: €7,800.Current price is: €4,340.
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Sonifex TB-6R Original price was: €845.Current price is: €815.

Sonifex TB-6D

SKU: 105845

Original price was: €1,950.Current price is: €1,850.


Sonifex TB-6D

TB-6D Desktop & TB-6R Rack-mounted Systems

Talkback logoTalkback refers to the standard method of communication between broadcast studios.
Each studio has either a desktop, a rack-mount, or mixer-mounted intercom, usually containing a row of switch buttons. Each switch button connects to another studio when pressed, and routes the presenter audio to it.

There are 4 products in the Sonifex Talkback Intercom range:

  • TB-6D 6 Way Talkback Intercom, desktop freestanding
  • TB-6R 6 Way Talkback Intercom, 19” rack mounted
  • TB-SD Station Master Talkback Intercom, desktop freestanding
  • TB-SR Station Master Talkback Intercom, 19” rack mounted

The TB-6D and TB-6R are general talkback interfaces which can be connected together to form a talkback system. The TB-SD and TB-SR are talkback units which only operate when connected to the Sonifex Station Master studio switcher.

TB-6D & TB-6R 6 Way Talkback Intercoms

The TB-6D and TB-6R are used for general talkback between studios and use DC signalling, also known as ground lifting or ground signalling, to communicate with each other. These units can be installed in various locations throughout a studio complex and linked to one another, with each unit being able to talkback to up to 6 others connected together. Most other talkback systems in general operation also use DC signalling, so you should be able to add these units into an existing installation.

Talkback TB-6R image
Talkback – TB-6R Rack mount System 6 Way Talkback Intercom, 19” rack mounted.

Desktop Or Rack mount

The TB-6D and TB-6R are identical in operation, with the TB-6D used for desktop operation and the TB-6R available as a 2U rack-mount, for use for example, in a central apparatus room or central technical area.


  • Provide talkback for up to 7 locations (TB-6D & TB-6R) or 5 locations (TB-SD & TB-SR).
  • Brightly lit push-to-talk buttons.
  • Momentary or latched buttons.
  • Built-in electret microphone, with input for external microphone.
  • Monitoring of 2 external inputs, e.g. for off-air receiver.
  • Auto-muting, or mixing, of external inputs, when talkback is active.
  • Integrates with Sonifex S2 mixer and is compatible with other talkback systems.

Technical Specification For Talkback

Audio & Power Specification

Talkback Input/Outputs 15 way male D-type plug (TB-6D & TB-6R) for 6 balanced talkback outputs and 1 balanced talkback input
Talkback Input Gain Range 9dB to -28dB, adjusted by rear panel preset pot
External Inputs & Mute 9 way female D-type socket, for stereo balanced external input 1, stereo unbalanced external input 2 (or external talkback input/output), talkback control output and mute input
External Input 2 Dual phono socket, stereo unbalanced in parallel with the 9 way female
D-type socket
External Inputs Impedance > 30kΩ unbalanced
> 40kΩ balanced
External Talkback Input Impedance > 30kΩ unbalanced
External Talkback Output Impedance < 80 Ω unbalanced
External Microphone Input 3 pin female XLR socket
Mic Input Impedance 1.5 kΩ balanced
Microphone Input Gain Range 74dB to 53dB, adjusted by rear panel preset pot
Headphone Output 6.35 mm (1/4”) jack, unbalanced stereo capable of driving 150mW into
32-600 Ω headphones
Headphone Output Gain Range 9dB to ≤60dB (off) adjusted by front panel pot
Station Master Remotes 25 way female D-type socket (TB-SD & TB-SR)
Loudspeaker Power 1W
Mains Input Power 85V – 264V AC, 47-63Hz, max 10W
Fuse Holder 1A anti-surge fuse

Physical Specification

Order Code Description
Total Nett
Total Gross Weight
TB-6D 6 Way Talkback intercom, desk units
6 cm (front)
2.4” (front)
8.6 cm (rear)
3.4” (rear)
22.4 cm
22.5 cm
1.25 kg
2.0 kg
TB-6R 6 Way Talkback intercom, 19” rack mounted
8.9 cm 3.5”
48.3 cm
18.5 cm
2.60 kg
4.0 kg