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I-Tech HD Series Power Amplifi ers
Operation Manual
page 13
H. MAC Address
This specifi c amplifi er’s network identifi er that is burned into its
fi rmware.
I. Preset Indicator
LED fl ashes to signal the number of the current preset if active.
LED is green if the preset values have not been changed once
loaded. LED is yellow if the preset values have been changed
since they were loaded.
J. Reset Button
To restore factory default settings: Press the Reset Button with a
thin, non-conductive object, then turn on amplifi er power, and
continue to hold the reset button until the Preset light comes
on green (approximately 16 seconds)..
K. Data Indicator
Flashes yellow only when the amplifi er is polled for data, or is
polled to see whether it is online.
DIGITAL INPUTS SECTION
L. AES/EBU Digital Input
This 3-pin female XLR connector accepts a dig ital signal in the
AES/EBU format.
3 Operation
Figure 3.2 Back Panel Controls and Connectors
3.5 Back Panel Controls, Indica tors
and Connectors
A. Fans
Provide front-to-back forced airfl ow for cooling.
ANALOG INPUTS SECTION
B. Balanced Analog XLR Inputs
A 3-pin female XLR connector for each channel.
C. Balanced Analog XLR Loop-Through
Outputs
Two 3-pin male XLR output connectors are pro vided
(one per channel). The signal at these connectors is
paralleled with the input signal for feeding the input
signal to other amplifi ers.
OUTPUTS SECTION
D. 4-Pole Speakon
®
Output Connectors
Two high-current, 50A Neutrik
®
Speakon
®
NL4MLP
(mates with NL4FC and NL4), one per channel.
Class 2 output wiring required.
These two connectors accept 2-pole or 4-pole
Speakon
®
connectors. See Figures 2.5 through
2.10 and Tables 1, 2 and 3 for connector wiring.
The top Speakon
®
connector is wired for both
channels so it can be used for bridge-mono
wiring or for stereo wiring of two speakers to a
single Speakon
®
connector.
E. Binding Post Output Jacks
One pair per channel of high-current, 60A color-
coded binding posts. Accepts banana plugs,
wire or spade lugs.
F. Power Cord Connector
Standard 20 amp IEC inlet. Voltage range is
indicated above IEC inlet.
G. Reset Switch/Circuit Breaker
If the current draw of the amplifi er exceeds safe
limits, this breaker automatically disconnects
the power supply from the AC mains. The switch
resets the circuit breaker.
M AES/EBU Digital Loop-through Output
Male XLR active/re-clocked AES/EBU digital loop-through.
The signal at this connector duplicates the digital input
signal for feeding the input signal to other amplifi ers.
It is not recommended to loop through more than four
amplifi ers. If larger distribution of AES is needed, the use of
an AES distribution ampli fi er is recommended.
NETWORKING SECTION
N. Link/Act Indicator
Shows net work activity.The LINK ACT LED illuminates when
the network port is connected and fl ashes when network
activity is detected.
O. Network Connector
This EtherCon
®
Ethernet connector is for networking.
Warning: Only connect to networks that remain inside the
building.
P. Cond Indicator
Turns on if the amplifi er is set to be the CobraNet conductor.
The CobraNet conductor is a CobraNet node that provides
the master timing clock for the CobraNet digital audio
transport network.