Orion Car Audio HCCA 225R - Manual (Page 41)

SEALED 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 EXAMPLE HIGH-PASS SET @ 30Hz
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