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AC Power Connections
The LSR4312SP voltage is set at the factory for use with either 100V-125V (U.S.) or 200V-250V. The
ground terminal of the IEC plug is required by wiring codes and regulations. It must always be connected
to the electrical installation safety ground.
CAUTION: Do not use three-pin-to-two-pin AC adapters to defeat the ground.
All LSR4300-series speakers and subwoofers have carefully designed internal grounding and balanced
inputs and outputs to reduce the possibility of ground loops (hum). If hum occurs, see Appendix E on
page 44 in this manual for suggested audio signal wiring, system grounding hints and other preventive
measures.
Network Connections and DIP Switch Settings
The Harman HiQnet™ networking technology employed by the LSR4312SP subwoofer and other
LSR4300 speakers enables a number of unique capabilities. Up to two LSR4312SP subwoofers and up
to eight LSR4328P or LSR4326P speakers can be interconnected network for control. When speakers are
interconnected this way, changes made to one results in the same change being made to all. For example,
turning on the power to one speaker causes them all to power up; similarly, altering the meter display
brightness of one speaker results in the same change in all the other speakers.
HiQnet networking also allows RMC calibration to be carried out for the entire system at once, and it
enables bass management to be instantly switched in or out for all speakers with the push of a single
button. What’s more, HiQnet makes it possible for all speakers and subwoofers in the system to be
controlled using a wireless remote control and/or LSR4300 Control Center Software.
To network your LSR4300 system:
1. Interconnect all speakers and subwoofers using the supplied CAT5 cable. Plug one end of the cable
into either of the two HiQnet ports on one speaker or subwoofer and the other end into a HiQnet port on
another unit until all components are connected.
(Speakers and subwoofers can be connected in any order).
2. Install the two network terminator plugs (supplied in the LSR4300 Accessory Kit) in the HiQnet ports of
the fi rst and last speakers in the chain.
3. Finally, set each speaker’s and subwoofer’s rear panel DIP switches according to its position in
the system. For example, if you are only using a single LSR4312SP subwoofer, set only the top-most
DIP switch (labeled SUB1) to the ON (right) position. Similarly, the LSR4328P or LSR4326P speaker
reproducing the left channel should have only its LEFT DIP switch turned ON. To set the DIP switch, gently
push the white plastic nub using a small fl at-blade screwdriver, a toothpick, or other narrow object.
The following illustrations show typical network interconnections and DIP switch settings for both stereo
and surround sound use.
Reference - Subwoofer Placement
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