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15. Power Connections - accepts greater than eight-gauge power and ground
cables.
16. 2 x 30A ATC Fuses - protect the amplifier from over current situations.
17. Speaker Connections - accepts up to 12-gauge speaker wire.
AMPLIFIER SETTINGS
Four-Channel Amplifier Input Configuration
The 4CH / 2 CH switch routes input from the front inputs to the rear section of the amplifi-
er. This allows the Orion 4004 channel amplifier to utilize a single set of RCA's or high-level
inputs to feed signal to both the front and rear channels of the amplifier.
When the switch is to the right (2 CH position), signal from the front inputs is routed to the
rear channels. When the switch is to the left (4 CH position), front and rear inputs are inde-
pendent. This allows a source unit with an internal fader to fade between the front and rear
outputs.
Internal Crossover Configuration
The crossover section of Orion 4004 amplifiers are continuously variable and extremely flex-
ible. The internal crossovers in your Orion 4004 amplifier are continuously variable and
extremely flexible. The separate front and rear controls with variable frequency and selec-
table high-pass, low-pass, or full-range settings allow you to configure the amplifier to
drive many different speaker and subwoofer system configurations.
When using Orion loudspeakers, minor deviations from the recommended frequency
ranges can provide superior results depending on your speaker locations and your vehicle
acoustics. Setting crossover frequencies higher than recommended will not cause damage
and may provide superior sonic results depending on your system's performance goals.
Refer to your loudspeaker owner's manual for assistance in choosing the proper crossover
frequencies for your system.
WARNING!
DO NOT set crossover frequencies lower than the speakers recommended
operating range. This can cause driver failure that is not covered by manufac-
turer's warranty.
Low-Pass Crossover (Front and Rear)
When the switch is to the left (FULL position), the low-pass crossover is bypassed. When the
switch is to the right (LOW position), the low-pass crossover is active. The low-pass crossover
is continuously variable from 20Hz to 3kHz.
High-Pass Crossover (Front and Rear)
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 20Hz to 3kHz.
Input Gain
The Orion 4004 amplifier has separate front and rear level gain adjustments. The input sen-
sitivity of these adjustments range from 200mV up to 5V on the RCA inputs and 1V to 10V
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
6
©2004 Directed Electronics, Inc.
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