Lab.gruppen fP Series FP 2400Q User Manual page 14

Figure 4. XLR input connector
Within the Neutrik® Comb
X LR.
TIP HOT
R ING COLD
SLEEVE SHIELD/G
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To connect an unbalanced input source, connect pins 1 and 3 in the cable's XLR plug (ring and sleeve in a
TRS p g). If you leave a pin di lu
A better method for using unbalanced sources is shown in Figure 8. This is similar to the connection for
balanced lines, but pin 3 is connected to the shield at the source.
is equivalent to that for a balanced line. To minimize hum in the audio, use balanced inputs whenever
possible.
Figure 7. Unbalanced line connection
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Speaker connections are made via the tw
connector is designed for high power sp
and prevents from shock hazard.
They are wired in the following manner:
The right jack, Channel A and B,
amp operation (see bridged mono operation
both channel C and D outputs.
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ojack there is a ¼"(6.3mm) phone jack, which is wired in parallel with the
ROUND
sconnected, you will lose 6dB.
o Neutrik® NL4FC Speakon connectors. The Speakon
eaker connections. It assures the correct polarity, it locks in place
has both channel A and B outputs, so it's useful for bridging and bi-
on page
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Figure 5. XLR balanced
Figure 6. ¼" TRS plug
The input impedance is h
balanced) to allow "daisy-chaining", or multiple
parallel input connections. The headroom of the i
circuits is also high enough to accept the maximum
output level from virtually any low-level signal source.
Balanced signals are less sensitive to AC hum and
radio interference. The source impedance should be
less than 1 kohms to avoid high frequency loss in lo
cables.
The hum and noise rejection for the cable
Figure 8. Balanced line with unbalanced equipment
8 ). The left Speakon, Channel C and D, carries
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igh enough (20 kohms
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