FLSUB10 and 12 Series
User’s Installation Guide
4 Operation
After you are satisfied that all connections are correct you are ready to begin operation.
See
Figure 3, OPERATION CONTROLS
POWER Switch
The POWER switch has three (3) positions OFF-AUTO-ON.
• In the
OFF
position the FLSUB is totally de-energized and nothing will function.
• In the
AUTO
position the FLSUB has “keep alive” voltage and is waiting for an audio
signal from your amplifier. Once the FLSUB senses an audio input the unit will fully
energize and allow the signal to be amplified. If no signal is present it will shut off in about
15 minutes. This is the preferred setting and will save on your energy bill.
• In the
ON
position the FLSUB is constantly on and consuming energy. In this mode you
may hear annoying background low frequency noise when no signal is applied. Either
lower the SUBWOOFER LEVEL or switch to AUTO to stop it.
SUBWOOFER LEVEL
This is the volume control for the FLSUB and is used to match
the output of your main speakers. Once set your amplifier will determine the overall
volume of bass. Do not set this level too high. Unnatural sound and distortion will result.
CROSSOVER FREQUENCY
This control allows you to adjust the maximum upper
frequency cutoff of the FLSUB. The range is 50-200Hz. Frequencies above the set are
filtered out and will not be amplified. Initially set it at mid range then adjust up or down for
the best response for your room. When using LFE out adjust fully clockwise.
PHASE
The PHASE switch is either 180
°
or 0
°
. This control allows you to minimize
the unwanted destructive acoustic interference when the main speaker low frequencies
overlap that of the subwoofer. Toggle the switch to find the best sound with audible bass.
INPUT POWER Switch
The FLSUB has a switchable power input of 110VAC and
230VAC See Figure 5. It is shipped in the 110VAC position with the required cord. To
change to 230VAC loosen the two Phillips screws on the clear cover of the 120-230V slide
switch and slide the switch down to the 230-240VAC position. Return the clear cover to
the proper position and retighten the two Phillips screws.
NOTE:
For 230VAC operation a separately supplied IEC female to male 230VAC is
required for operation.
Warning:
Connecting the amp to a 230VAC source with the Input Power Switch in the
120VAC position will permanently damage the amp and void the warranty. Conversely,
having the Switch in the 230VAC position and connecting to a 120VAC source will render
the amp inoperable and also void the warranty.
Specifications subject to change without notice.
FLSUB RPA 072710
Figure 3, SPEAKER SUB HOOK-UP
Cut Away of FLSUB Controls
Amplifier Front Speaker Output
Left
Right
Speakers
Figure 4, FLSUB OPERATION CONTROLS
Crossover Frequency
Sets the Maximum
Amplified Frequency
Volume
Control
Phase
Power
Right
Left
Page 3
Figure 5, INPUT POWER SWITCH
Input Power
Switch
