NetPA Ultra Series • Operation
2
Over Temp Indicator
— (see
figure 12
on page 12) A single LED that lights red when the
amplifier has exceeded the maximum recommended operating temperature. The amplifier
recovers once the unit has sufficiently cooled down (see
Troubleshooting
on page 108).
3
Channel Status LEDs
— (see
figure 12
on page 12) Two rows of two LEDs on the NetPA U
1002 units or two rows of four LEDs on the NetPA U 1004 units that represent amplifier channels.
•
Limiter/Protect LED
— This LED lights red when the channel is in protection
mode, which is triggered by any of the limiter protection circuits such as:
•
When the channel is in an overload situation.
•
When the output short circuits.
•
When digital clipping is detected on the output of the DSP going into the
amplifier channel.
•
When the channel overheats.
•
Signal LED
— This LED lights green when the output signal from a DSP channel
that goes to an amplifier channel crosses the DSP signal detection threshold. The
threshold is -59dBFS.
NOTE:
The LEDs are also located on the rear panel.
Rear Panel Features
1 2 3 4
NetPA U 1004
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
CLASS 2 WIRING
2
1
4
3
Tx Rx
RS-232
G G
3
4
1
2
3
4
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
CONFIG
REMOTE
8Ω/4Ω OUTPUTS
AT
1 2 3 4
NetPA U 1004-70V
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
CLASS 2 WIRING
2
1
4
3
Tx Rx
RS-232
G G
3
4
1
2
3
4
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
CONFIG
REMOTE
70V OUTPUTS
AT
1 2 3 4
NetPA U 1004-100V
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
CLASS 2 WIRING
2
1
4
3
Tx Rx
RS-232
G G
3
4
1
2
3
4
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
CONFIG
REMOTE
100V OUTPUTS
AT
NetPA U 1004-100V
NetPA U 1004-70V
NetPA U 1004
1
2
3
4
5
6 7
8
9
A
B
D
E
F G
I
C
H
A
B
D
E
F G
I
C
H
1 2
NetPA U 1002
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
2
1
Tx Rx
RS-232
G G
3
4
1
2
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
REMOTE
8Ω/4Ω OUTPUTS
1 2 3 4
NetPA U 1004-70V
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
CLASS 2 WIRING
2
1
4
3
Tx Rx
RS-232
G G
3
4
1
2
3
4
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
CONFIG
REMOTE
70V OUTPUTS
AT
1 2 3 4
NetPA U 1004-100V
MIC/LINE INPUTS
1
2
STANDBY
LIMITER/PROTECT
SIGNAL
LINK
R
CLASS 2 WIRING
2
1
4
3
Tx Rx
RS-232
G G
3
4
1
2
3
4
100-240V 1.0 A, 50-60Hz
LINE OUTPUTS
CONFIG
REMOTE
100V OUTPUTS
AT
NetPA U 1004-100V
NetPA U 1004-70V
NetPA U 1002
1
2
3
4
5
6 7
8
9
A
B
D
E
F G
I
C
H
A
B
D
E
F G
I
C
H
REMOTE
CONFIG
CLASS 2
WIRIN
G
AT
1
IEC Power Receptacle
2
Mic/Line Inputs
3
Channel Status Indicators
4
Line Outputs
5
Remote Ports
6
USB Config Port
7
Reset Button with
Reset Mode LED
8
AT port with Link LED
9
Speaker Outputs
Figure 13.
NetPA Ultra Series Amplifier Rear Panels
NOTE:
The NetPA U 1004 and NetPA U 1002 rear panel are displayed above. The other rear
panels in the NetPA Ultra Series amplifiers function identically.
1
IEC Power Receptacle
— Connect a standard IEC AC power cord here for power input
(100 VAC to 240 VAC, 50-60 Hz) to the internal, autoswitching power supply. This connector may
be replaced by the Flexible Conduit Adapter Kit (see
Flexible Conduit Adapter Kit Installation
on page 8).
2
Mic/Line Inputs
— Connect up to four 3-pole 3.5 mm captive screw connectors to input up to
four balanced or unbalanced line level or microphone level signals.
NOTE:
Inputs remain active during standby. Phantom power is not available on any of the
inputs (see
figure 14
on the following page for captive screw connector wiring).
13
CLASS 2 WIRING
2
1
4
3
70V OUTPUTS
CLASS 2 WIRING
2
1
4
3
100V OUTPUTS
NetPA U 1004 70V and 100V Speaker Outputs
8
NetPA U 1002 70V and 100V Speaker Outputs
8
2
1
70V OUTPUTS
CLASS 2
WIRING
2
1
100V OUTPUTS
CLASS 2
WIRIN
G
