6
LS4
24dB/Octave Active Stereo Crossover
The CD Horn EQ Switch:
The CD Horn EQ switch (#9,#20) allows the user to boost the upper frequencies by 12dB to compensate for
Constant-Directivity horns. The chart below illustrates the effect of this switch.
How to Use the Crossover:
With a Subwoofer:
Adding a subwoofer requires an additional power amplifier and a couple of cables. The 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 input jack of the amplifier which will be used to power the sub-
woofer
(B)
. Connect the LS4’s
CHANNEL ONE HIGH OUT
to the input jack of the amplifier which will be used to power
the upper range speaker cabinet
(C)
.
(Hint: Label the amplifiers “subwoofer amp” and “upper range amp” to avoid
confusion.)
Connect the amplifiers to their respective speakers. Repeat for channel two if used.
