High-Pass Crossover; Adjusting Intelli-Bass - Orion HP-2300 Owner's Manual

High-Pass Crossover

When the switch is to the left (FULL position), the high-pass crossover is bypassed. When the
switch is in the middle (HIGH position), the high-pass crossover is active. The high-pass
crossover is continuously variable from 50Hz to 500Hz.
Input Gain
The Orion amplifiers have gain adjustments with an input sensitivity range from 200mV up
to 5V on the RCA inputs and 1V to 10 on the high-level inputs. This allows easy integration
from any source unit either with RCA outputs or speaker outputs. Refer to the Testing the
System and the Adjusting the Sound of the System sections for detailed instructions on set-
ting up the level controls.

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 18dB 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
Infinite Baffle
Sealed
Vented
Sealed Band-pass
Vented Band-pass
Aperiodic
© 2005 Directed Electronics, all rights reserved
Boost Levels
0dB +3dB
Tune above High X-Max
Fs of woofer Drivers--Tune
above Fs of
woofer
Tune above Tune above
Fs of woofer Fs of woofer
Tune to port Tune to port
frequency frequency
Tune above Tune above
Fs of woofer Fs of woofer
Tune to port Tune to port
frequency frequency
Set crossover Set crossover
to Fs of to Fs of
woofer woofer
+6dB +10dB
Not Not
Recommended Recommended
High X-Max Not
Drivers--Tune Recommended
above Fs of
woofer
Tune to port High X-Max
frequency Drivers--Tune to
port frequency
High X-Max Not
Drivers--Tune Recommended
above Fs of
woofer
Tune to port High X-Max
frequency Drivers--Tune to
port frequency
Set crossover Not
to Fs of Recommended
woofer
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