Orion Car Audio HP-4800 - Manual (Page 11)

10 © 2005 Directed Electronics, all rights reserved
WARNING! Exercise caution when setting INTELLi-Q. Maximum boost can potentially
cause woofer damage due to over-excursion.
Adjusting Intelli-Q
Incorporated in the high-pass crossover, Intelli-Q maximizes the performance of a sub-
woofer. The high-pass subsonic filter removes unwanted bass output from the woofer,
increasing the output of a subwoofer by as much as 3 dB due to the increased mechanical
power handling. Depending on the enclosure, using Intelli-Q can increase the low frequen-
cy response by an additional 10dB! The type of enclosure used and the woofer's excursion
capability determine acceptable boost levels. Listed below are recommended boost levels
for different enclosure designs.
Adjusting Intelli-Bass
Intelli-Bass on the rear channels maximizes the performance of a subwoofer and allows for
continuous adjustment of low frequency boost on the rear channels. Intelli-Bass can be
adjusted from 0dB to 12dB of boost centered at 45Hz. Initially the Q is very low (wide). As
Intelli-Bass is added, the Q rises (narrows). This allows the amplifier to overcome acoustic
deficiencies in your vehicle. The type of enclosure used, the sub-woofer's excursion capabil-
ity, personal preference, and attitude determine acceptable boost levels.
WARNING! Exercise caution when setting Intelli-Bass. Maximum boost can potentially
cause woofer damage due to overexcursion.
Enclosure Type Boost Levels
0dB +3dB +6dB +10dB
Infinite Baffle Tune above High X-Max Not Not
Fs of woofer Drivers--Tune Recommended Recommended
above Fs of
woofer
Sealed Tune above Tune above High X-Max Not
Fs of woofer Fs of woofer Drivers--Tune Recommended
above Fs of
woofer
Vented Tune to port Tune to port Tune to port High X-Max
frequency frequency frequency Drivers--Tune to
port frequency
Sealed Band-pass Tune above Tune above High X-Max Not
Fs of woofer Fs of woofer Drivers--Tune Recommended
above Fs of
woofer
Vented Band-pass Tune to port Tune to port Tune to port High X-Max
frequency frequency frequency Drivers--Tune to
port frequency
Aperiodic Set crossover Set crossover Set crossover Not
to Fs of to Fs of to Fs of Recommended
woofer woofer woofer