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To end Solo and unmute all other networked speakers, press the SOLO button again.

All front panel button actions can be cancelled at any time simply by pressing the button a second time.

RMC Room Mode Correction

– This button is used both to initiate an RMC calibration and to bypass

RMC settings after calibration (in order to compare the results of RMC with the uncorrected signal). RMC

calibration can only be initiated when the LSR4312SP is connected to a network that includes at least one

LSR4328P or LSR4326P speaker with the calibration microphone connected to its rear-panel input; thus,

it cannot be performed solely with an LSR4312SP alone. For information about RMC, see page 32 in this

manual. For RMC calibration procedure, consult the LSR4328P or the LSR4326P studio monitors

owners manual.

When a brand new LSR4312SP is ﬁ rst powered on or if its factory settings have been restored (see page 32

in this manual), or when the bass managment crossover frequency selection is changed, the RMC button lights
steadily to indicate that an RMC calibration needs to be performed.
For more information, see page 30 in this manual.

Bass Management ON

– Press this button to turn Bass Management ON and OFF. (The button will

light steadily green when it is ON.) When bass management is on, the LSR4312SP will reproduce signal

arriving at all connected analog inputs (or at the selected S/PDIF or AES/EBU digital inputs). When bass

management is off, the LSR4312SP will reproduce only signal arriving at the analog LFE input or at the

digital input designated to carry LFE signal. For bass management to function when using a digital signal

source, the rear panel DIP switch 5 must be set to the “Bass Management” (right) position (see page 21

in this manual for more information); in that case, the LSR4312SP will reproduce signal arriving at either

or both of the selected digital input channel(s), as determined by the settings of DIP switches 3 and 4. For

more information, see Appendix A on page 34 in this manual.

Whenever turning Bass Management ON or OFF, all networked LSR4300 speakers will ﬂ ash their illuminated

JBL logos to indicate the change in status.

If a second LSR4312SP is networked, turning Bass Management ON in either one will cause both to be

set identically.

Bass Management X OVER

(Crossover) – Determines the frequency of the LSR4312SP’s lowpass ﬁ lter

employed when bass management is ON; only signals below that frequency will be reproduced by the

LSR4312SP. When other LSR4300 speakers are networked to the LSR4312SP, their internal high-pass

ﬁ lters will automatically be set to that same frequency; they will then reproduce only signals above the

crossover frequency.

The bass management crossover can be set to either 50Hz, 80Hz, or 120Hz. To make your selection,

press the X OVER button. It will ﬂ ash and the meter display will conﬁ rm the currently selected bass

management crossover setting. (Bass management will also automatically be turned ON, with the button

lit steadily). While the X OVER button is ﬂ ashing (for approximately 3 seconds), you can use the +/-
buttons to change the crossover setting. The new selection will then be displayed on the meter display, as
shown in the following illustrations, and will be stored in the LSR4312SP after 3 seconds (or, immediately,
by pressing the X OVER button a second time within that 3-second period). For more information, see
Appendix A on page 34 in this manual.

Reference - Front Panel