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User’s Guide

for the

LS4

24dB/Octave

Active Stereo Crossover

In order to achieve the highest level of performance from your crossover,

please read this owners guide prior to its use.

“Thank You” from

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Summary of Contents for Live Sound LS4

Page 1: ...User s Guide for the LS4 24dB Octave Active Stereo Crossover In order to achieve the highest level of performance from your crossover please read this owners guide prior to its use Thank You from...

Page 2: ...nced or unbalanced inputs All of the outputs are 1 4 TRS jacks and can also be used either balanced or unbalanced CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOC...

Page 3: ...encies and 17 sets the crossover point between the mid and high frequencies 7 18 X1 X10 This switch determines the range of the Frequency controls 6 17 When this switch is depressed the crossover freq...

Page 4: ...mode 25 sends the Channel 2 low frequency signal to the channel 2 low frequency amplifier and 29 sends the Channel 1 low frequency signal to the channel 1 low frequency amplifier Mono mode 25 is not...

Page 5: ...below illustrates the effect these switches have on frequency response The Low Cut and High Cut Switches The Low Cut switch 3 14 provides a 6dB octave cut in the amplitude of signals below 40Hz to el...

Page 6: ...he basic connections are illus trated below Connect the line level output of your source mixer preamp etc to the CHANNEL ONE BALANCED INPUT of the LS4 A Connect the LS4 s CHANNEL ONE LOW OUT to the in...

Page 7: ...the location of the two speaker cabinets the subwoofer and the upper range cabinet If the two cabinets are in close proximity to each other and the front faces are aligned a relatively high crossover...

Page 8: ...test CD Position an SPL meter at the center axis of your system at a distance of about 10 feet refer to the illustration below and follow these steps Make sure that all equalization in your system is...

Page 9: ...ers will list the lowest recommended crossover frequency accompanied by the maximum power the unit will handle with different horn types A good rule of thumb is to stay above the recommended frequency...

Page 10: ...s very important Check your speaker manufacturer s specifications for the sen sitivity of each driver and balance the system as described on page 8 using pink noise and or a Real Time Analyzer in conj...

Page 11: ...amp etc to the BALANCED INPUT MONO MODE of the LS4 A Connect the LS4 s LOW OUT MONO MODE to the input jack of the amplifier which will be used to power the low frequency driver B Connect the LS4 s MID...

Page 12: ...z Riley state variable filters Control Range 50 1kHz X1 500 10kHz X10 3 Way Mono Mode Operation Internally Wired Input Impedance10k ohms Input Connections Balanced XLR 1 4 T R S Output Impedance 2 2k...

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