PRESONUS Temblor T8 Owner's Manual page 10

3 Tutorials
3.2 Level Calibration
SPL:
79 dB
Power User Tip: Once you have matched the levels of your full-range monitors and T8, don't
use their volume controls to adjust the overall level; instead, use the volume on your audio
device (computer, iPad, TV, etc.). This will ensure that your speaker levels remain matched.
8
2. Turn your Temblor T8 and your full-range monitors' input levels to their
lowest setting.
3. Play pink noise through your speakers. You should not hear anything yet.
4. Begin slowly increasing the volume of your left monitor until
the acoustic level of the pink noise reaches 82 dB SPL on your
SPL meter when measured at your listening position. Turn off
your left monitor and repeat with your right monitor.
If you're using monitors that provide a single level control for
SPL:
82 dB
both the left and right side, like the Ceres™ C3.5BT, C4.5BT or
Eris 4.5BT, play pink noise through both monitors, increase the
volume until your SPL meter reads 85 dB.
Power User Tip: If 82 dB or 85 dB is too loud or too quiet for your room, set
the level to one that is more comfortable for your listening requirements.
Just be sure to set the same level for both the left and the right monitor.
5. Turn your full-range monitors off. If your T8 is connected
to the Sub Out on a Ceres C3.5BT or C4.5BT, set the input
volume of your Temblor T8 to "0" and skip to Step 7.
6. Begin slowly increasing the input volume on your Temblor T8 until
the acoustic level of the pink noise reaches 79 dB SPL on your SPL
meter when measured at your listening position.
7. Set the lowpass filter on your T8 to 130 Hz. This will create a frequency overlap
between your T8 and your full-range system.
8. Play pink noise through your full system and experiment with the polarity
switch on your Temblor T8 to see which position provides the best bass
response. Leave the polarity switch where the bass is the loudest.
9. Now play some music through your system and experiment with the lowpass
filter on your T8 until you find the most natural transition between your
full-range monitors and your subwoofer. If your full-range monitors are
connected to the outputs of your T8, you may want to try turning on the
80 Hz highpass filter on the T8 and setting the lowpass filter to 80 Hz.
Temblor T8
Owner's Manual