Orion HP-4600 - Manual (Page 12)

11
© 2006 Directed Electronics, all rights reserved
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 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