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The backup power interface is used to connect to a 24 V DC power source.
2
2
The connector is provided in the package, a 2-pin cable with a cross-section of 1mm
to 1.5mm
is
recommended.
RK-AMP500 500W Class-D Power Amplifier
Audio Input
LINE IN is a balanced audio interface, which used to connect to an external audio source. The
interface is inclusive of positive (+), negative (-) and ground signals.
The BOOSTER INPUT is a high voltage input used to connect to the 100 V output of other power
amplifiers.
The audio signals from LINE IN 1, BOOSTER INPUT 2 and controllers, such as the RK-MCU or zone
expanders is mixed and amplified.
The connection terminals are provided in the package, a 2-pin shielded audio connector with a cross-
2
2
section of 0.5mm
to 1.5mm
is recommended for LINE IN 1 and a 2-pin cable with a cross-section
2
2
of 0.5mm
to 1.5mm
is recommended for BOOSTER INPUT 2.
Fault Output
If any fault occurs, the amplifier will be protected. During the self-testing, ports A and B will be shorted.
This interface can be connected with third party devices to transfer the fault signal of a power
amplifier.
Power Amplifier Control Interface
The power amplifier control interface is used to connect with controllers, such as the RK-MCU or
zone expanders to transfer audio and control signals, such as self-test, power-saving signal to the
power amplifier, or fault signals, such as power fault, power protection from amplifier to controllers.
There are two ports, IN and OUT. PA IN can be connected to the PA OUT of other controllers or
power amplifiers. PA OUT can be connected to the PA IN of other power amplifiers. Attached cable
is recommended.
Please refer to the definition of "Power Amplifier Interface" of the RK-MCU.
Power Amplifier Output
There are two outputs, 70 V or 100 V, which are used to output the high voltage audio signal from
the power amplifier. The terminal is attached in the package, 2-pin cable with a cross-section of
2
2
0.5mm
to 1.5mm
is recommended.
30
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