Directed Electronics 1500X Owner's Manual download pdf (Page 7)

AMPLIFIER SETTINGS

Signal Input and Output Configurations

The input section of the amplifier consists of a phase switch that sets

the output configuration, gain controls, high pass and low pass cross-

overs controls, Intelli-Q control, and RCA inputs. The input section

makes it easy to adapt this amplifier to most system configurations.

Input Gain

These Orion amplifiers have level adjustments to allow for easy inte-

gration with any source unit. The input sensitivity is a push button

adjustment, with the depressed (in) position giving you a range from

400mV to 8V while in the out position this range is 200mV to 4V. Refer

to Testing the System and Adjusting the Sound of the System under

Setup and Troubleshooting section of this guide for detailed instruc-

tions on setting the gain.

Phase Switches

L 0° - leaves output unaffected. The output signal is in phase with

the input signal.

L 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.

Internal Crossover Configurations

The crossover section of the Orion HCCA25001, and HCCA50001 ampli-

fiers is continuously 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 perfor-

mance of Orion subwoofers in all types of enclosures.

When using Orion loudspeakers, minor deviations from the recom-

mended 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 perfor-

mance 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 the manufacturer’s warranty.

Low-Pass Crossover

When the Slope button is in the out position, the low-pass crossover is

active with a 2nd order (12dB per octave) slope. When the button is in

the depressed (in) position, the low-pass crossover is active with a 4th

order (24dB per octave) slope. The low-pass crossover is continuously

variable from 20Hz to 300Hz.

High-Pass Crossover

When the On/Off button is the out position, the high-pass crossover

is bypassed. When the button is in the depressed (in) position, the

high-pass crossover is active with a 2nd order (12dB per octave) slope.

The high-pass crossover is continuously variable from 20Hz to 200Hz

and is optimized for use as a subsonic filter. Additionally, boost can

be added at the high-pass crossover frequency for improved bass

output while still protecting the woofer from excessive excursion.

The Intelli-Q adjustment allows up to 10 dB of boost at the selected

crossover frequency.

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Directed Electronics 1500X Owner's Manual Page 7

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