E
ng
lis
h
Connections
5
Make sure the power switch is off before attempting to
make any input or output connections.
By using good quality input and speaker cables, the like-
lihood of erratic signal behavior is reduced to a minimum.
Whether you make them or buy them, look for good quality
wires, connectors and soldering techniques.
5 : 1.Signal grounding
There is no ground switch or terminal on the GTA series
amplifiers. All shield terminals of input connections are
directly connected to the chassis. This means that the unit’s
signal grounding system is automatic. In order to limit hum
and/or interference entering the signal path, use balanced
input connections.
In the interests of safety, the unit MUST always operate
with electrical safety earth connected to the chassis via the
dedicated Protective Earth wire.
5 : 2.Analog audio input con-
nections
Analog input is provided by means of Neutrik XLR female
connectors, one per channel input. Signal polarity of analog
input connections is shown in
Panel H, p. 8
.
5 : 3.Digital audio input con-
nections
Digital input is supported via AES3 (AES/EBU) and
Dante™ standard protocols in Dante equipped devices.
AES3 connectors are Neutrik XLR female, one per chan-
nel pair. The AES3 connection carries a channel pair through
a 110 Ω nominal impedance wire in the form of a balanced
(differential) digital signal: in AES3 XLR connectors the
identification of hot and cold pins is not an issue; take care
to never tie pin 2 or pin 3 (balanced signals) to pin 1 (ground).
Avoid the use of microphone cables in AES connections: im-
pedance mismatch can result in signal reflections and jitter,
causing bit errors at the receiver.
In Dante equipped devices, Dante connectivity is sup-
ported via two Neutrik etherCON ports located on the
rightmost side of the GTA Otto and GTA Quattro rear panels.
Fast Ethernet (IEEE 802.3u, 100 Mbit/s) and Gigabit Ethernet
(IEEE 802.3ab, 1 Gbit/s) network protocols are supported;
Cat5e or Cat6 standard UTP twisted pair cables shall be
used for connections up to 100 meters (328 ft).
Ethernet cabling must comply to TIA/EIA-568-B and adopt
the T568B scheme pinout, as shown in
Panel I, p. 8
.
5 : 4.Output connections
CLASS3
WIRING
CLASS 3 WIRING
Output terminals are hazardous: wiring connection
to these terminals require installation by an in-
structed person and the use of ready made leads. Take care
to secure the output terminals before switching the device
on.
Single-ended and bridge-tied loudspeaker connections
are supported as shown in
Panel J, p. 8
.
5 : 5.Ethernet connections
GTA series amplifier platforms can be remotely con-
trolled via an Ethernet connection through a personal com-
puter and Powersoft ArmoníaPlus software.
Outline recommends the use of Ethernet Cat5 straight
through –
patch
– cables with pin/pair assignments TIA/EIA-
568-B, i.e. T568B, as shown in
Panel I, p. 8
.
4
1
2
3
4
5
6
7
8
25
26
27
28
29
30
31
32
9
10
11
12
13
14
15
16
33
34
35
36
37
38
39
40
17
18
19
20
21
22
23
24
41
42
43
44
45
46
47
48
UP Link
Power
L1
L2
L3
N
PE
◄
TURN TO LOCK
◄
TURN TO LOCK
◄
TUR N TO LOCK
◄
TURN TO LOCK
1=GND 2=IN+ 3=IN
ANALOG IN
1=GND 2=IN+ 3=IN
ANALOG IN
GRAND TOURING AMPLIFIERS
Made in Italy
POWERED BY
MAINS
3PH
1PH
L1
L2
L3
N
N
L
OUT4
CH7-8
OUT3
CH5-6
OUT2
CH3-4
OUT1
CH1-2
POWER
OUTPUTS
1 NEG
1+POS
2
2+POS
NEG
CH 2/4/6/8
CH 1/3/5/7
1
2
3
4
5
6
7
8
7-8
5-6
AES3 IN
3-4
1-2
AES3 IN
GTA
-Otto
outline.it
FIG. 2: Example of GTA Otto connections.
AC mains
AES3
Analog
Gigabit
Switch
Dante™
Dante Controller
ArmoníaPlus
OUTLINE S.R.L.
Via Leonardo da Vinci, 56
25020 Flero (Brescia) Italy
Tel.: +39 030.3581341
Fax +39 030.3580431
[email protected]
www.outline.it
17
