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   LMS-23 Crossover sound controller
The LMS-23 is a dedicated line array speaker system processor with factory-optimized tunings for LMS-62 and LMS-6015 speaker systems. Can user-adjustable for enough gain,threshold level with compression ratio,delay time function(module optional),180 degree phase shift select and x-over frequency change of foruth order filter,or can easy setting and controls to use by STK "U" mark range systems if not necessary more adjustable. The internal 4 band equalizers are fixed type specifically to setting LMS-62 and LMS-6015 speaker systems, not user-adjustable. once the controller settings have been matched to the LMS line array speaker system, the user or installer can final analyzered to the frequency spectrum for each different sound environments,and then setting each EQ bands of STK HVQ series equalizers to fixed final frequency spectrums. The connections are Stereo balanced XLR inputs and through ourputs,Bi-Mode HF,LF XLR outputs and parallel XLR subwoofer outputs.
Model LMS-23
Connectors Female XLR (inputs), Male XLR(input through)
Type Electronically balanced/RF filtered
Impedance Balanced >20k ohm. Unbalanced >10k ohm
Max Input Level >+19dBu balanced or unbalanced
Connectors Male XLR (pin 2 hot)
Type Impedance-balanaced/unbalanced, RF filtered
Impedance Balanced 100 ohm, unbalanced 50 ohm
Max Output Level >+21dBu balanced/unbalanced into 2k or greater
System performance  
Gain Control Range -20 dBu to + 20 dBu
Frequency Response 20Hz to 20kHz, +/-0.5dB from target response
Signal-to-Noise Ref: +4 dBu, 22 kHz measurement bandwidth
Stereo or mono parallel Mode >94dB (SF Output)
>93dB (LF Output )
>92dB (HF Output)
Dynamic Range >114 dB, unweighted, any output
THD + Noise <0.03% at +4 dBu, 1 kHz
<0.05% at +20 dBu, 1 kHz
Interchannel Crosstalk <-80 dB, 20 Hz to 20 kHz
Threshold Level Range 5:'-42 dBu to '+18dBu
Ratio 1:1- ∞ : 1
Processor Type Analog engine dynamic processor
Equalization Fixed 4 band (factory setting)
Phase Shift 0 or 180º (SF output)
0 or 180º (LF output)
Crossover Frequencies  
Sub Woofer 63 to 250Hz
Low/High 630 to 5KHz
Filter type Linkwitz-Riley, 24 dB/octave, state-variable
Function Switches  
Mute Controls Activates signal mute on LF and HF output
Activates signal mute on SF output.
Low Cut Filters Activates 15 Hz Butterworth, 12 dB/octave high-pass filter (SF output)
Rear Panel  
Mode Setect Selects stereo 2-way or parallel mono 2-way operation
Ground Lift Disconnects from AC ground
Stereo Operation LED OFF
Parallel Mono Operation Yellow LED Turn on
Sig Green LED turn on from '- 10dBu input level.
Gain Reduction Meter 4-LED bar graph (all Red) at 0, 3, 6, and 10dB
Power Supply  
Operating Voltage 100 VAC 50/60 Hz; 120 VAC 60 Hz ; 230 VAC 50 Hz
Power consumption 15W
Main Connection IEC Receptacle
Dimensions: WXHXD 483X44X176mm
Shipping/CBM 0.0255
Weight 2.5 kg
Shipping Weight 3.9 kg
*Specifications subject to change without notice.
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