TL Audio A4 - Manual (Page 8)

8
INSTALLATION
AC Mains Supply.
The unit is fitted with an internationally approved 3 pin IEC connector. A mating
socket with power cord and mains plug is supplied. All mains wiring should be
performed by a qualified electrician with all power switched off, and the earth
connection must be used.
Please note that when using this unit with alternate supply voltages (in foreign
countries, for example) the internal wiring of the unit may be set for 115V (accepting
voltages in the range 110V to 120V, 60Hz AC) or to 230V (for voltages in the range
220V to 240V, 50Hz AC). If the wiring needs to be changed, the unit must be taken to
an approved service centre.
Alternate supply voltages may also require a different power cable or mains plug. If in
doubt, consult local electrical regulations.
Warning: attempted operation on the wrong voltage setting, or with an
incorrect fuse, will invalidate the warranty.
Inputs.
The Ebony Summer has individual TRS jack socket inputs for each of the 16 channels,
plus two 25pin “D-Sub” connectors carrying the inputs for 8 channels on each.
Either the jack or D-Sub inputs should be used: they are not mixed together. The D-
Sub inputs are connected to the normally closed contacts on the jack sockets, therefore
an input connected to the jack socket will override the input from the D-Sub.
When using jack inputs, a 3 pin TRS jack plug should be used. These may be wired to
accept balanced or unbalanced connection as follows:
Balanced inputs:
- Sleeve = Ground (screen).
- Tip = Signal Phase (“+” or “hot”).
- Ring = Signal Non-Phase (“-” or “cold”).
Unbalanced inputs:
- Sleeve = Ground (screen)
- Tip = Signal Phase (“+” or “hot”).