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LS4
24dB/Octave Active Stereo Crossover
How to Use the Crossover (con’t):
For Bi-Amping in a Single Enclosure (con’t):
Use of a signal delay processor may be necessary to correct the time alignment of the components:
For Tri-Amping:
The LS4 features a 3-way mono mode that can be activated by pressing in the Stereo/Mono switch (#11). This
switch internally connects the two channels together providing a Low, Mid and High output. In the Mono mode the
controls function according to the labeling directly beneath them (in light gray boxes), and the rear panel outputs
carry the signals indicated by the labeling directly beneath the jacks.
The basic connections are illustrated below.
Refer to the nomenclature beneath the jacks. Connect the line level output of your source (mixer, preamp, 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 OUT
-
MONO MODE
to the input jack of the amplifier which will be used to power the midrange driver
(C)
. Connect the LS4’s
HIGH
OUT
-
MONO MODE
to the input jack of the amplifier which will be used to power the high frequency driver
(D)
.
(Hint: Label the amplifiers to avoid confusion.)
Connect the amplifiers to the respective input jacks of the enclo-
sure(s).
The Channel One Frequency control sets the crossover frequency between the low and mid outputs; Channel
Two sets the crossover frequency between the mid and high outputs. The system is now ready for balancing and
equalizing.
IMPORTANT NOTE: Whether you are bypassing the internal passive crossover of an existing enclosure or
building your own system, care must be taken not to exceed the limitations of the speaker components!
