Crown k series Reference Manual page 9

5. Connect the inputs of the K-Series amp to your mixer,
preamplifier, or other equipment ahead of the amp. Two
types of balanced input connectors are provided, allow-
ing you to choose either 1/4-inch phone or 3-pin XLR con-
nectors (see Figure 2.4). You can also choose to use
either balanced or unbalanced wiring. (See the section
Balancing the Line on page 28 for an explanation of bal-
anced vs. unbalanced wiring.)
Input Wiring Tips
1. For all input connectivity, use shielded wire only. Cables with a
foil wrap shield or a high-density braid are superior. Cables with
a stranded spiral shield, although very flexible, will break down
over time and cause noise problems.
2. Try to avoid using unbalanced lines with professional equipment.
If you have no choice, keep the cables as short as possible. (Re-
fer to the section Balancing the Line on page 28.)
3. To minimize hum and crosstalk, avoid running low-level input cables, high-level output
wires and AC power feeds in the same path. Try to run differing signal-cable paths at 90°
to one another. If you must use a common path for all cables, use a star-quad cable for
the low-level signals.
4. Before changing input connectors or wiring, turn the amplifier level controls all the way
down (counter-clockwise).
5. Before changing output connections, a professional will turn the amplifier level down and
the AC power off to minimize the chance of short-circuiting the output.
If the Bridge Output switch is ON, only the Channel 1 in-
put connectors should be used. If only the "Y" input
switch is ON, then either set of connectors can be used.
Fig. 2.4
Typical Input
Wiring
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K-Series Balanced Current Amplifier™ K-Series Balanced Current Amplifier™
If you are running with both the Y-Input and Bridge Output
switches "ON", you may choose to make use of the un-
used input connectors as low-voltage daisy-chain out-
puts—perhaps to other amplifiers in your system. For
instance, if you're running in "Y" mono mode and you
connect the input signal to the Channel 1 XLR connector,
you can use the Channel 2 XLR connector plus the two 1/
4-inch phone plugs for daisy-chained outs. This simplifies
your wiring needs, making good use of all the compo-
nents in your system.
Output Wiring Tips
1. To prevent possible short circuits, wrap or otherwise insulate
exposed loudspeaker cable or cable connectors.
2. Do not use connectors that might accidentally tie conductors
together when making or breaking the connection
(for example, a standard, 1/4-inch stereo phone plug).
3. Never use connectors that could be plugged into AC power sockets. Accidental AC
input will be an electrifying experience for your equipment. But you will find out real
quick if your speakers are any good at 60 Hz!
4. Avoid using connectors with low current-carrying capacity, such as XLRs.
5. Do not use connectors that have any tendency to short.
6. Connect the outputs of the K-Series amp to your loud-
speakers. If the Bridge Output switch is turned OFF, con-
nect the positive (+) and negative (–) leads of each
loudspeaker to the appropriate Channel 1 and Channel 2
output connectors as shown in Figure 2.5.
Fig. 2.5
Stereo Output
Wiring
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