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Non-THX Low Level Connection
When connecting the ICS Sub 24 to
electronics that does not have a THX control
system, use the low level (also called line
level) connections whenever possible. Even if
you do not have a separate preamp and
power amp, many receivers and integrated
amplifiers include ”Preamp Out“ and
”Amplifier In“ connectors.
When using the low level connections, the
signal from the High Pass Outputs that is
returned to your amplifier is high pass filtered to remove sound below 80Hz. This is a non-adjustable filter. It is not
affected by the setting of the Crossover control. See the Fine Tuning section of this manual for more information.
Subwoofer Output Connection
Some electronics have monophonic subwoofer
outputs. If your system has this type of an output
it can be connected to either of the low level
inputs. The benefit of using this type of connec-
tion instead of using the THX input is that it does
not bypass the controls of the ICS Sub 24. You
can still use the level control to adjust the output
of the subwoofer. Typically such outputs are low
pass filtered, so you should set the ICS Sub 24
crossover control to it’s highest setting to
minimize its effect. If listening test show there is an excess of mid-bass sound you may want to use a lower crossover
control setting. See the “Fine-Tuning Your Subwoofer section for more information.
Warning: To reduce the risk of electric shock, always switch off the subwoofer and the amplifier and or receiver when
making connections to the subwoofer and speakers.
THX® Input
Use this input when the ICS Sub 24 is connected
to a receiver or surround sound controller that
has a built-in THX control system. This input
bypasses ALL the crossover and control circuitry
of the ICS Sub 24.
CONNECTION
80 Hz
60 Hz
70 Hz 100 Hz
125 Hz
50 Hz
CROSSOVER LOW LEVEL IN
LR
HIGH PASS OUT
LR
150 Hz
THX INPUT
Bypasses Crossover
THX Receiver ICS Sub 24 Amp
SUB
OUT
80 Hz
60 Hz
70 Hz 100 Hz
125 Hz
50 Hz
CROSSOVER LOW LEVEL IN
LR
HIGH PASS OUT
LR
150 Hz
THX INPUT
Bypasses Crossover
Amplifier, Receiver or
Preamp/Power Amp
ICS Sub 24 Amp
PREAMP
OUT
AMP
IN
L
R
80 Hz
60 Hz
70 Hz 100 Hz
125 Hz
50 Hz
CROSSOVER LOW LEVEL IN
LR
HIGH PASS OUT
LR
150 Hz
THX INPUT
Bypasses Crossover
Amplifier, Receiver or
Preamp/Power Amp
ICS Sub 24 Amp
SUB
OUT
Either Input
May Be Used