JBL LSR4312SP Owner's Manual page 26

Reference - Rear Panel
1. Input Sensitivity switch – In the OUT position, selects -10 dBV sensitivity for all analog inputs. In the
IN position (pressed in), selects +4 dBu sensitivity for all analog inputs.
2. Analog XLR balanced LFE input connector – Connect analog audio signal from the LFE channel here.
3. Analog XLR and ¼" balanced Bass Management input connectors (Left, Right, Center, L Surround,
R Surround) – Connect analog audio signal from the corresponding channel of the signal source to these
XLR inputs. Alternatively, analog audio input signal for the Left and Right channels can be connected to
the ¼" jacks.
4. Analog XLR balanced LFE output connector – Use this to distribute full-range LFE signal to a
second subwoofer.
5. Analog XLR balanced Bass Management output connectors (Left, Right, Center, L Surround, R
Surround) – Use these to distribute incoming analog signal for each channel to the corresponding speaker.
Full-range signal is always supplied from of these connectors regardless of bass management settings.
(See page 13 in this manual for more information.)
6. +10 dB Gain LFE switch – When pressed in, an extra 10 dB of gain is added to the incoming LFE
signal. (See Appendix A on page 34 in this manual for more information.)
7. S/PDIF input connector (RCA-type) – Input connector for incoming digital signal in two-channel S/
PDIF format.
8. S/PDIF output connector (RCA-type) – Output connector used to route incoming S/PDIF signal to
another speaker.
9. AES/EBU input connector (XLR) – Input connector for incoming digital signal in two-channel
AES/EBU format.
10. AES/EBU output connector (XLR) – Output connector used to route incoming AES/EBU signal to
another speaker.
11. Harman HiQnet™ connectors (RJ45 x 2) – Used to interconnect the LSR4312SP subwoofer and
other LSR4300 speakers for centralized system control from any speaker or via wireless remote control or
LSR4300 Control Center Software.
12. USB connector – Universal Serial Bus Type I connector for computer connection when updating
("fl ashing") the internal system software.
X
The USB connector on th LSR4312SP is for fi rmware updates only. To control the subwoofer using
LSR4300 Control Center Software, the subwoofer must be networked with one or more LSR4326P or
LSR4328P speakers and Control Center Software must be connected to the "LEFT CHANNEL SPEAKER".
13. DIP switches – These six switches are used to set various parameters such as speaker ID and
polarity. If one of the two digital inputs is selected, DIP switch settings also determine how the signal will
be processed: as an LFE signal or Bass Management, and whether the LSR4312SP is reproducing the left
side (Channel A), right side (Channel B), or both sides of the incoming stereo digital signal. To set the DIP
switch, gently push the white plastic nub using a small fl at-blade screwdriver, a toothpick or other
narrow object.
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