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Operating controls
Volume control
This control adjusts the output level of the subwoofer and should be used to balance the
levels of the subwoofer and main/satellite speakers.
Frequency control
This control adjusts the subwoofer’s high frequency roll-off point. Variable from 35Hz to
140Hz, it is used to blend the subwoofer perfectly with the satellite/main speakers. In
general, the better the bass response of your main speakers, the lower this control should
be set.
Phase switch
This switch allows you to match the phase of the subwoofer with the phase of your
satellite/main speakers. Switchable from Nom. (0°) to Rev (180°). It compensates for the
mid-bass acoustic effects of different speaker locations and listening room acoustic effects.
Music/Theatre switch
You may prefer Music mode when listening to music and Theatre mode when watching
movies. Music mode delivers a slightly lower bass volume but extends the lowest
frequencies including subsonic sounds to deliver true hi-fi realism. Theatre mode delivers
higher sound levels but rolls off more steeply into the subsonics, attenuating them so that,
for example, an earthquake scene in a blockbuster movie does not actually shake your
vases off the sideboard.
Sub/LFE switch
Switch to LFE when using the single ‘Sub Out’ connection from a Home Threatre receiver.
This allows the receiver to set the crossover between subwoofer and main speakers. For all
other connections use the SUB setting which activates the Thor’s crossover controls.
Connecting the subwoofer
to your stereo or A/V system
There are essentially two ways to connect your subwoofer with your audio/video system.
The first one is via the High Level (Speaker Level) input
terminals and the second is through the line level RCA
terminals. Your system components will usually determine
which method to use.
For most A/V setups you run only one RCA lead from the
subwoofer output to EITHER left or right line input on the
subwoofer.
The High Level connections can be used with virtually any
stereo receiver or amplifier. When there is no specific
subwoofer output on the amplifier, use these Left and Right
Caution
1. Do not use both Low Level and
High Level methods
simultaneously.
2. Turn off all power to your
audio/video system before
proceeding with the
installation of the subwoofer.
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