Orion 250R & 275R Owner's Manual page 41

SEALED EXAMPLE HIGH-PASS SET @ 30Hz
VENTED EXAMPLE HIGH-PASS SET @ 30Hz
In this example, the frequency has
been increased to 30 Hz. Up to 6 dB
of boost is capable at this frequency.
With +6dB of boost, the woofer has
more output down to 23 Hz.
Overall usable output is increased.
Vented enclosure benefit most from
the INTELLi Q. Up to 10 dB of
boost is capable at the box tuning
frequency of 30 Hz. With +10dB of
boost, the woofer has more output
down to 22 Hz. The excursion below
the tuning frequency has been
greatly reduced.
page 41