L-Acoustics 108P, Operator'S Manual

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L-ACOUSTICS P Series Manual V2.1 7/12/2007
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To daisy-chain connect mains power from a 108, 112P or SB15P loudspeaker to additional P Series
enclosures (up to 3), use a cable with a grey Neutrik PowerCon NAC3FCB connector at one end
(connected to the Power Output connector of the P Series enclosure that is supplying power) and a
blue Neutrik PowerCon NAC3FCA connector at the other end (connected to the Power Input
connector of the P Series enclosure that is being daisy-chain connected).
Note: Neutrik PowerCon connectors are color-coded:
Blue = power input = Neutrik NAC3FCA PowerCon connector
Grey = power output = Neutrik NAC3FCB PowerCon connector
Never daisy chain connect more than 3 P series enclosures using the Power Output connector.
Do not daisy-chain connect P Series enclosures using an unearthed PowerCon NAC3FCA to
PowerCon NAC3FCAB cable.
Figure 16: Daisy-chain connection of P Series enclosures
These cables (NAC3FCA to NAC3FCB) must handle at least 5A@230V or 10A@115V.
SIGNAL INPUT/LOOP THROUGH
P Series loudspeakers are supplied with dual XLR connectors that are internally wired in parallel,
allowing for loop through connection and parallel operation of multiple 108P, 112P or SB15P
enclosures.
XLR connectors are wired as follows:
Pin 1 = ground
Pin 2 = ve
Pin 3 = signal –ve
Unbalanced sources (for example, RCA or ¼” TS phone jack connectors) can be connected to the
108P or 112P provided that pin 3 is grounded to pin 1 (see Figure 17).
Figure 17: Connecting unbalanced sources