Operation Manual, RA2400 & RA7300 Power Amplifiers
Page 11
Document # 9301H62800 Ver. 1.00
amplifier into a 230V supply will damage the amplifier.
J Ground
Terminal
Occasionally, audible hum arises when a preamplifier is connected to the RA2400/RA7300.
Should this occur, running a ground wire between the preamplifier and the RA2400/RA7300
may restore noise-free operation.
CONNECTING THE RA2400/RA7300
When making connections between any source component and the RA2400/RA7300, or when
making connections to any speaker, be certain that both the input devices and the RA2400/RA7300
are turned OFF. This will ensure that no unwanted signals/transients will be produced and possibly
damage equipment or speakers. It is always best to power off all equipment before making any
connections.
Input Connections
Connecting the RA2400/RA7300 to your source equipment is simple. Using high-quality audio
interconnect cables, match the output channel designations on the rear of your source equipment
to the input jacks on the rear panel of the RA2400/RA7300 that have the same channel name.
●
When making connections with the XLR connectors, DB25 connector or any interconnect cables,
make certain to gently but firmly insert the plugs into the jacks.
●
Make sure the connections are firmly seated and locked in. Loose connections may cause
intermittent sound and could damage your speakers.
●
Note that some quality plugs may be very tight and it is important to ensure a proper, secure
connection between the interconnection cable and the input jack.
●
Be careful to match the type of input you have decided to utilize on your RA2400/RA7300 with
the same type on your preamp or other source device.
Dip Switch Settings
When using the DB25 connectors, be sure that the dip switches on the RA2400/RA7300 have been
properly set for the desired channel being used:
●
They should all be in the off position if you are using the XLR inputs.
●
There will be no output if the switches are in the wrong position.
●
The dip switches are used to assign the DB25 input connector (balanced analog audio Ch1-8) to
the RA2400/RA7300. Note that it does not affect the pass-thru connector (located directly below
the input connector). See the next page for an example of dip switch settings.
