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Fine Tuning the Crossover Frequency
The crossover section is marked at four frequency points for ease of system adjustment.
These points are 20Hz, 250Hz, 1kHz, and 3kHz. Specific crossover points can be chosen
based on the recommended operational bandwidth of your speakers.
Auxiliary Output Configurations
The auxiliary outputs on Orion amplifiers offer easy, unlimited system expansion. Routing
signal from a source unit, pre-amplifier, or equalizer is a matter of connecting RCA's to the
RCA Inputs and the RCA outputs to the next Orion amplifier in the signal chain. When the
switch is in the COPY position, the RCA output is an identical copy of the input signal. The
signal passes through a buffer stage so that several amplifiers can be daisy chained without
signal loss or overloading of the source unit. This maximizes the signal output and mini-
mizes the potential for system noise.
When the switch is in the MASTER position, the RCA outputs are buffered through the gain
stage of the amplifier and filtered through the crossover sections of the amplifier. When set
this way, the amplifier's gain and crossover settings are sent to other amplifiers down the sig-
nal chain. This can be useful for configuring multiple subwoofer amplifiers easily in a large
SPL system. All subsequent amplifiers after the master amp will be in the COPY position and
have their gains set to zero and all crossovers turned off. The master amplifier will control
all the functions of the slave amps via the MASTER RCA output signal.
INTELLi Bass Control
INTELLi Bass maximizes the performance of a subwoofer and allows for continuous adjust-
ment of low frequency boost. INTELLi Bass can be adjusted from 0dB to 10dB of boost cen-
tered at 45Hz. Initially the Q is very low (wide). As INTELLi Bass is added, the Q rises (nar-
rows). This allows the Orion 8004 to overcome acoustic deficiencies in your vehicle. The type
of enclosure used, the sub-woofer's excursion capability, 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.
AMPLIFIER WIRING
Power Connections
● Fuse Size: 80 AMP MAXI
● Minimum 8 gauge power and ground cable is recommended for acceptable per-
formance.
● Fuse power wire prior to wire passing through panels or near sharp edges and less
than 18" from battery.
● Ground amplifier to a good chassis ground as close as possible to the amplifier.
● Add extra ground wire (minimum 8 gauge) between the negative terminal of the
battery and the chassis.
NOTE: The addition of a ground wire from the battery to the chassis of the vehicle
improves the ability of the battery to supply power to the amplifier. This helps
especially in newer vehicles, where the current delivery of the factory electrical
system was designed only to accommodate electronics supplied by the auto man-
ufacturer.
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©2003 Directed Electronics, Inc.