Installation manual

Community S-Series - Operation and Installation Manual - Page 24
PIN DESIGNATIONS
In Passive Mode the pin designation is as follows:
• NL4 Pin 1+ and the tip of the ¼” jack connect to the positive (red) output of
the amplifier.
• NL4 Pin 1- and the sleeve of the ¼” jack connect to the negative (black)
output of the amplifier.
Internally, these pins are connected to the passive crossover in the loudspeaker.
Note: Pin 1+ and 1- and Pin 2+ and 2- are always connected in parallel to the second
NL4 connector. However, only Pin 1+ and 1- are connected to the ¼” jacks, as they are
two pole wiring devices. In the Passive Mode, Pin 2+ and Pin 2- are not connected
internally to any loudspeaker components.
In Bi-amp Mode the pin designation is as follows:
• NL4 Pin 1+ connect to the positive (red) output of the amplifier powering the
low-frequency driver.
• NL4 Pin 1- connect to the negative (black) output of the amplifier powering
the low-frequency driver.
• NL4 Pin 2+ connect to the positive (red) output of the amplifier powering the
high-frequency driver.
• NL4 Pin 2- connect to the negative (black) output of the amplifier powering
the high-frequency driver.
Internally these pins connect to their respective low-frequency and high-frequency drivers
through the internal passive crossover circuits, thereby deriving an added degree of driver
protection.
IMPORTANT: The ¼” jack is a two-pole wiring device and therefore cannot be used in the
Bi-amp Mode. Bi-amping, by its nature, requires a four-pole connector.
CAUTION: Be sure to carefully observe polarity when wiring your loudspeaker(s). If one
loudspeaker is wired with the opposite polarity from another loudspeaker, acoustic
cancellation will occur. The result will be less total acoustic power output than if only one
loudspeaker were used by itself.