TL Audio A4 - Manual (Page 9)

9
- Ring = Ground ( or connect screen and ring together )
Note: When using unbalanced connection on 3 pin plugs, the ring must be linked to
the sleeve to avoid possible reduction in level and/or increase in noise. ( alternatively a
2 way mono TRS jack may be used )
The D-Sub connectors are wired to the audio industry standard, as follows:
Connector 1 Connector 2 Phase (+) Non-Phase (-) Ground
Channel 1 Channel 9 24 12 25
Channel 2 Channel 10 10 23 11
Channel 3 Channel 11 21 9 22
Channel 4 Channel 12 7 20 8
Channel 5 Channel 13 18 6 19
Channel 6 Channel 14 4 17 5
Channel 7 Channel 15 15 3 16
Channel 8 Channel 16 1 14 2
Insertion Points.
The insertion points on the stereo mix are balanced, with separate send and return
sockets. They are “half normalled” i.e. a plug inserted into the send socket (to derive
an additional output) will not break the signal path through the channel, but a plug
inserted into the return socket will override the signal through the channel.
Mating plugs may be wired for balanced or unbalanced connection as follows:
Balanced sends and returns, (using stereo TRS Jack connectors) :
- Sleeve = Ground (screen).
- Tip = Signal Phase (“+” or “hot”).
- Ring = Signal Non-Phase (“-” or “cold”).
Unbalanced send and returns: (using stereo TRS Jack connectors)
- Sleeve = Ground (screen)
- Tip = Signal Phase (“+” or “hot”).
- Ring = Ground (screen)
(Alternatively a mono TRS Jack may be used for unbalanced signals wired hot to tip,
screen to sleeve). Balanced connection is always preferable in an audio system, where
the equipment being connected supports it. It is possible to mix balanced and