7
CPA-50
Power Amplifier
BALANCED INPUT
XLR
The input is in the form of Balanced Neutrik XLR connectors
• Interference:
If the unit is to be used where it maybe exposed to high
levels of disturbance such as found close to a TV or radio
transmitter, we advise that the unit is operated in a
balanced configuration. The screens of the signal cables
should be connected to the chassis connection on the
XLR connector as opposed to connecting to pin1. The
CPA-50 conforms to the EMC standards.
• Ground Loops:
If ground loop problems are encountered, never disconnect the mains earth,
but instead, try disconnecting the signal screen on one end of each of the
cables connecting the outputs of the CPA-50 to the patchbay. If such measures
are necessary, balanced operation is recommended.
SPEAKER OUTPUTS
L-/L+/R-/R+
The speaker outputs connectors are in the form of binding posts that can be wired
directly to the speaker terminals via bare wires through the hole and tightened, via
spade terminals, or via banana plugs.*
The diagrams on the following pages show some common wiring methods. Note
that when in bridged mono mode the
R
-
provides the negative terminal and
L
+
provides the positive, the other terminals are not used. (See Bridge)
*
Due to European legislation the use of banana plugs is not permitted. Banana plugs should only be used
in the USA and Canada.
POWER
The mains inlet, I.E.C., which also incorporates the internal mains fuse, can be
found on the rear of the unit. If a fuse should need replacing see section ‘Power
Connection’. A mains lead will have been provided with the CPA-50 to suit the
mains configuration for the country of your purchase. Please use this cable.
The power switch is a hard boot switch (as opposed to a soft stand-by switch) and
so when in the off position the CPA-50 will draw no mains power.
CHAPTER 2
3
2
4
5
