TB978

MULTI TALKBACK GN30

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Multi talkback box
8 channel output
All-in-one of the power supply built-in
TB mix from ext
The external control is possible
Goose neck microphone

TB978 is the multi-output TB box which it can use alone.
It does not need the installation work for the all in one type that a power supply is built in.
It can make talkback to the output of 8 channel individually or simultaneously.
It implements a GPI port, and the external control is possible, too.
Moreover, it provides the communication environment of the high clarity by a microphone with a built-in compressor.

“Program”
As for the stereo input source, it is mixed by default mono with internal switch setting.
With the stereo mode, an odd corresponds to the L output, and an even corresponds to the R output.
In this case, it is necessary to change the specifications of the TB switch because it is the output configuration of 4 stereo channel.

“TB”
It mixes a talkback signal with a program source, and the output of any 8 channel can output it individually.
With ‘TB ALL’ button, all channel can output it simultaneously.
It can set a program DIM level and the TB level in the TB by trim of the rear panel.

“GPI”
‘TB ALL’ command, a tarry and a TB signal are output to a GPI port of the rear panel, and there is the TB signal input to mix TB source from external.
In addition, the parallel remote signal of the panel is output in GPI2.

■ Specifications
•PGM INPUTS: STEREO, BALANCED, 12kΩ, XLR3-F
•MIC: AKG CK31+GN30
•MIC GAIN: 0~+60dB automatic
•CONTROL: TB 1-8, TB ALL
•POWER: 100VAC 50/60Hz, max 10W
•DIMENSIONS: 206Wx84Hx204D 2kg

   GPI Dsub9-F(#4-40)
01 CMD COM (0V)     06 TLY COM (+15V)
02 TB ALL CMD       07 TB ALL TLY
03 EXT TB+          08 EXT TB -
04 TB OUT +         09 TB OUT -
05 AUDIO GND

   OUTPUTS Dsub25-M(#4-40)
01 OUTPUT 1+        14 OUTPUT 1-
02 OUTPUT 1G        15 OUTPUT 2+
03 OUTPUT 2-        16 OUTPUT 2G
04 OUTPUT 3+        17 OUTPUT 3-
05 OUTPUT 3G        18 OUTPUT 4+
06 OUTPUT 4-        19 OUTPUT 4G
07 OUTPUT 5+        20 OUTPUT 5-
08 OUTPUT 5G        21 OUTPUT 6+
09 OUTPUT 6-        22 OUTPUT 6G
10 OUTPUT 7+        23 OUTPUT 7-
11 OUTPUT 7G        24 OUTPUT 8+
12 OUTPUT 8-        25 OUTPUT 8G
13

   GPI 2 Dsub25-F(#4-40)
01 SW COM 0V 14 LP COM +15V
02 TB SW 1          15 TB LP 1
03 TB SW 2          16 TB LP 2
04 TB SW 3          17 TB LP 3
05 TB SW 4          18 TB LP 4
06 TB SW 5          19 TB LP 5
07 TB SW 6          20 TB LP 6
08 TB SW 7          21 TB LP 7
09 TB SW 8          22 TB LP 8
10 TB SW ALL        23 TB LP ALL
11                  24
12                  25
13

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