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Speaker
Configurations
Balanced Inputs
The CR5 has high quality balanced inputs with hum rejection. Three types of balanced input connectors are
available. The Combi-jack input will accept a standard 1/4" TRS (stereo) phone plug or an XLR plug for balanced
operation. The tip of the 1/4" TRS (stereo) phone plug and pin 2 of the XLR plug are the positive (hot) connec-
tions. A terminal strip input allows for a direct wired connection for installation applications. Use a forked lug for
a #6 screw to connect the input wires to the barrier strip. Follow the directions in figure 4 & 5 (on the following
page) for the various balanced connections. We recommend using balanced connections wherever possible to
ensure that the system is noise free.
Mono Operation
The CR5 can also be operated in mono by switching the mode switch to mono and connecting the input signal
to either the A or B input jack. This signal will be sent to both amplifiers. Each amplifier's audio level will be con-
trolled by its corresponding gain control. You can use the remaining input jacks to "loop through" to another ampli-
fier or a piece of sound equipment.
Stereo Operation
The CR5 may be operated in stereo by switching the mode switch to stereo and connecting the "left / right"
stereo input signal to the A and B input jacks. Each gain control will adjust the audio level for its corresponding
amplifier channel. The input jacks for each channel are wired in parallel so that the unused connector can be
used to send the input signal to another amplifier or piece of sound equipment.
Bridged Operation
The CR5 may be operated in bridged mode by switching the mode switch to bridge and connecting the input
signal to either the A or B input jack. Channel A's gain control is used to adjust the audio signal level. The loud-
speaker load is connected across the two red binding posts with the positive lead of the loudspeaker wire con-
nected to the red channel A binding post.
Outputs
Two types of output connectors are on the output of the CR5. Heavy duty binding posts accept a banana plug,
forked lug or bare wire connection. When the amplifier is used in stereo or mono mode, connect the loudspeaker
to the red and black binding post with the positive wire from the loudspeaker connecting to the red binding post
and the negative wire to the black binding post. For bridged mode operation the speaker load is connected across
the two red binding posts with the positive lead of the speaker wire connected to the red channel A binding post.
The diagrams on the sidebar show the different loudspeaker wiring configurations. The other connector is a ¼ ¨
phone jack for quick setups and teardowns. Use a mono ¼ ¨ phone plug with the tip of the plug wired to the
positive connector and the sleeve of the phone plug wired to the negative connector of the loudspeaker.
The CR5 delivers up to 250 watts per channel into a 4 ohm loudspeaker. Wiring two 8 ohm speakers to one
channel will look like a 4 ohm loudspeaker to the amplifier and each 8 ohm loudspeaker will receive 125 watts.
In bridge mode the CR5 drives up to 500 watts into an 8 ohm loudspeaker. Don't put anything less than an 8
ohm loudspeaker load across the speaker terminals in bridge mode or the amplifier may go into protection.
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