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AIRMOTIV S8 F
lex
S
ubwOOFeR
System Configuration #2
System: A surround sound preamp/processor, A/V receiver, or stereo preamp, with a
subwoofer output, but with no built-in bass management.
Connections:
• Connect the subwoofer outputs of your AVR, processor, or preamp, to the Left Input and
Right Input on the Flex Subwoofer. If your source component has a single subwoofer output,
you may simply connect it to the Left Input on the Flex Sub. If your source component only
has a balanced subwoofer output or outputs you may need to purchase a low cost passive
balanced-to-unbalanced adapter or adapter cable.
Configuration:
• Set the Power switch to Auto so your Flex Sub will turn on automatically when the music
starts.
• With the Phase switch, try both settings, and leave it set in the direction where you hear the
most low bass (at your listening position).
• Adjust the X-Over control so you get the smoothest transition between the Flex Sub and your
main speakers. The correct setting will depend on your room and your other speakers.
• Adjust the Volume control so that the level of the Flex Sub matches the level of your other
speakers. The output of the sub should blend smoothly with your other speakers and you
should not hear the sub as a separate source of sound.
• The setting on the High-Pass Crossover Frequency switch doesn’t matter.
Notes:
• Connect your main power amp and speakers as you normally would.
• Once you set the Volume and X-Over controls on the Flex Sub, leave them alone, and use the
controls on your processor or preamp to control the level of your entire system.
• You may wish to consider System Configuration #3.
It requires more cables, but has the benefit of a true crossover, with an active high-pass filter.
The high pass filter limits the low frequency content being sent to your main speakers,
reducing the power requirements on the amplifier powering them, and reducing the
demands on the speakers themselves.
A
+
-
60 HZ
80 HZ
100 HZ
OUT IN
L
R
LFE
L
R
HIGH LEVEL IN
POWER AMPLIFIER
PREAMP / PROCESSOR
INPUT
MAIN
OUTPUTS
SUBWOOFER
OUTPUT
