Sonifex TB-6R 6-Way Talkback Intercom, 19" Rack Mounted

Special Order

$0.00 Tax Outside NJ

+1 (888) 606-6268

For consultancy, customized solutions and special pricing Click Here

The Sonifex TB-6R 6-Way Talkback Intercom is used for general talkback between studios and use DC signaling, also known as ground lifting or ground signaling, to communicate with each other. It 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 signaling, so you should be able to add these units into an existing installation.

Radio Studio Application Using TB-6R
A typical application would be to distribute talkback and audio feeds around a radio or TV studio complex. The TB-6R is daisy-chained together from location to location and the radio station output from an off-air receiver is distributed on input EXT 1 of each unit. The EXT 2 input could be used in the news or sales area for monitoring local sources such as a PC audio output. Linking the studios in this way allows all locations to talk to each other together with the ability to monitor 2 external feeds, with independent control of monitor muting and headphone/speaker levels.

Talkback For Up To 7 locations
Up to 7 locations or studios can communicate with each other. On each panel, there are 6 front panel buttons for talkback selection and 2 for external inputs. When a button is pressed, the button lights up and the talkback is active to that location.

Press Release, Press Hold Operation
The buttons work with both a momentary and latched operation. If you simply press the button, talkback will be on and can be cancelled by pressing the button again. If you press and hold the button, the selection is cancelled when released. So, if you wanted to listen to an external input, such as the radio station feed or off-air monitor, you could simply press the EXT 1 button. If you receive talkback from another studio when the external input buttons are also pressed, the external inputs can be either muted or mixed, depending on the setting of an internal jumper. The talkback outputs and input are balanced signals on a 15-way male D-type plug and the talkback input can be adjusted from -28dB to 9dB using a rear panel preset pot.

Onboard Electret Mic or External Mic
You can speak to the separate locations using the onboard front-panel electret mic or there is a separate external mic input on a 3 pin XLR female connector, into which you can plug a suitable gooseneck microphone. There is a rear panel switch to select between the electret and separate input mic. The mic input gain range is adjustable via a rear panel preset pot between 74dB and 53dB.

Monitoring External Inputs
The unit can monitor two external sources. The EXT 1 input is a balanced stereo input on a rear panel 9 pin D-type socket. The EXT 2 input is an unbalanced stereo input on the 9 pin D-type socket as well as dual phono sockets. EXT 1 is useful for monitoring a distributed signal, such as a radio tuner off-air feed or an outside source routed from an ISDN codec. EXT 2 is useful for monitoring a local source, such as a portable minidisc/flashcard recorder/player or the unbalanced soundcard output from a PC editing/playback package.

If you already use a mixer which has a talkback input and output or continuous talkback output or just a line level output which you want to use, by changing internal jumpers the intercom can be configured to use these connections instead of the on-board microphone and speaker/headphones. For example, if you have a mic channel on a mixer assigned to talkback and the presenter is using headphones for monitoring the mixer talkback, the Talkback Intercom can be used purely for talkback switching and for monitoring external inputs.

Built-in Loudspeaker and headphones
For monitoring, you can use either the built-in 1W loudspeaker or headphones on a 6.35mm unbalanced stereo jack. The headphones provide 150mW into 32-600OHM headphones. When the headphones are used, the speaker is automatically muted. Additionally, the monitor speaker can be muted via a remote contact on the 9 pin D-type External Input connector, for example, when used in an area with live microphones. Both monitor and headphone levels are fully adjustable between -60dB and 9dB using the front panel volume control.

More Information
Stock StatusSpecial Order
Mfr Part NoTB-6R
Talkback Input/Outputs
15 way male D-type plug 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
> 30kOhms Unbalanced, >40kOhms Balanced
External Talkback Input Impedance
> 30kOhms unbalanced
External Talkback Output Impedance
< 80 Ohms unbalanced
External Microphone Input
3 pin female XLR socket
Mic Input Impedance
1.5kOhms balanced
Microphone Input Gain Range
74dB to 53dB adjusted by rear panel preset pot
Headphone Output
6.35mm (1/4") jack, unbalanced stereo capable of driving 150mW into 32-600 Ohms 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
Mains Input Power
85-264V AC, 47-63Hz, max 10W
Fuse Holder
1A anti-surge fuse
Dimensions (W x H x D)
19 x 3.5 x 7.3" (48.26 x 8.89 x 18.54cm)
5.7 lbs (2.58kg)
Write Your Own Review
You're reviewing:Sonifex TB-6R 6-Way Talkback Intercom, 19" Rack Mounted
Your Rating