Orion 6000 - Manual (Page 9)

8 ©2004 Directed Electronics, Inc.
AMPLIFIER SETTINGS
Signal Input and Output Configurations
The input section of the amplifier consists of a phase switch that sets the output configura-
tion, gain controls, and RCA inputs. The input section makes it easy to adapt this amplifier
to most system configurations.
Input Gain
The Orion 300D, 600D, 1200D, and 2500D amplifiers have level adjustments to allow for
easy integration with any source unit. The input sensitivity can be adjusted from 200mV to
5V. Refer to Testing the System and Adjusting the Sound of the System sections of this guide
for detailed instructions on setting the gain.
Phase Switches
● 0° - leaves output unaffected. The output signal is in phase with the input signal.
● 180° - inverts the output. The channel is 180° output of phase. This configuration
is useful for inverting the phase of subwoofers to improve staging in a vehicle.
This is also used when bridging two amplifiers into one speaker (600D and 1200D
only).
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 RCAs 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. (The 300D does not have a COPY/GAIN/MASTER switch.
The 300D provides buffered RCA output.)
When the switch is in the GAIN position, the RCA outputs are buffered through the gain
stage of the amplifier. When the first amplifier in the signal chain is set this way, a remote
gain controller (RGC-1) can be connected to the amplifier and act as a PRE-AMP controlling
the overall level of the system. Following amplifiers are configured in the COPY mode with
their gains set to zero as the GAIN amp is now controlling the gain level for all subsequent
amps. This eliminates the need to gain match multiple amplifiers.
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.
Internal Crossover Configurations
The crossover section of the Orion 300D, 600D, 1200D, and 2500D amplifiers is continuous-
ly variable and extremely flexible. In addition to the variable built-in low-pass filters, the
high-pass crossover incorporates the INTELLi Q feature. This circuit is designed to optimize
the performance of Orion subwoofers in all types of enclosures.