PRESONUS Eris Sub8 Owner's Manual page 13

3 Tutorials
3.2 Level Calibration
9. Now play some music through your system and experiment with the lowpass
filter on your Sub8 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 Sub8, you may want to try turning on the
80 Hz High Pass filter on the Sub8 and setting the lowpass filter to 80 Hz.
Power User Tip: Once you have matched the levels of your full-range monitors and Sub8,
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.
Power User Tip #2: The SPL figures quoted above are guidelines. When increasing the
output level, the point at which your Eris Sub8 will hit 79 dB SPL can be highly dependant
upon the acoustic response of the room it's set up in. Standing waves could cause
resonance around 79 dB, causing you to reach it sooner than anticipated; comb filtering
may cause you to never reach it at all.
Eris Sub8
™
Owner's Manual
11