TriangleTube THETIS 300, Owner'S Manual & Warranty

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4. POWERING ON
Power on as follows:
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Plug your subwoofer into AC power.
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Set the Auto selection switch to the ON position to enable the automatic powering on, or to
the OFF position to disable it and use the remote to turn on the subwoofer. When using this
function, the subwoofer will automatically enter standby mode when no audio signal is received
for 15 minutes.
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Toggle the ON/OFF switch to «ON».
Notes: When the subwoofer is not used for several days, cut the power using the power switch.
4.1 Placement and Settings
Place your subwoofer at the front of the listening area (between the two main speakers or in a
corner) for a better sound quality.
There are 2 possible adjustments available: volume and frequency roll-off.
The ideal setting is the one that matches a lifelike reproduction of the lowest frequencies,
harmonized as much as possible with your main speakers. You should not “feel” the subwoofer.
The bass must seem to come from the main speakers.
Tip to set the frequency roll-off: between 30Hz and 80Hz with larger main speakers, between 80 and
120Hz with smaller speakers.
When searching for the optimal result, it can be very convenient to use the polarity reverse switch.
This switch has the function of reversing the polarity of the acoustic signal emitted by the subwoofer.
Depending on where you place the subwoofer in relation to the main speakers in the room, the
reversing of the polarity of the subwoofer can help find a better consistency in the system’s overall
response at lower frequencies.
We recommend making different tests to find the setting that suits your needs best. You can use a
track that you know well and analyze the result, depending on your taste, and aspirations.