RXC-3000
Hardware Installation and User Guide
9000-0000-040 Revision 10
26 of 46
Genave Electronics
The Audio pins are connected to the 600 Ohm audio transformer. The transformer passes AC voltages
but blocks DC voltages from exiting the RXC-3000. This to help remove “Hum” from the audio lines if
the RXC-3000 is not connected to the same power supply as the amplifier.
Pinout And Characteristics Of 600 Ohm Audio Port (J12)
The 600 Ohm audio port is used to connect the audio from the RXC-3000 to a PA system such as the
type used in a school, fire station or office building. Most of these systems have audio inputs that are
rated as 600 Ohms of balanced audio (600 ohms between the audio wires and no ground reference).
The transformer passes AC voltages but blocks DC voltages from exiting the RXC-3000. This is to
help remove “Hum” from the audio lines if the RXC-3000 is not connected to the same power supply
as the amplifier. Additionally, the current sent through the transformer is a push-pull type which allows
it to go further without interference from other sources of AC power. Please note that you should use
either twisted wires or shielded wires between the RXC-3000 and the PA amplifier. This helps remove
unwanted AC signals which cause hum and distortion. Also, do not run the audio wires near fluorescent
light fixtures since they can produce a large amount of AC noise.
The connector J12 can accept wires up to
16
AWG
.
Note: If you connect the 600 Ohm port to a PA system, you cannot use the External Amplifier Control
Port since the 600 Ohm transformer is also connected to 2 of the pins in this connector.
