Orion 280gx User Manual

INTRODUCTION
You have purchased the finest car audio power
amplifier available on the market. ORION amplifiers
really do set new standards for performance and re¬
liability. They are superbly crafted and precision
calibrated. If you install each amplifier properly
with careful attention to all the details covered in
this manual, you will be astonished with the quality
of sound and you will have an audio system that
you can be proud of and enjoy for many years.
• All ORION amplifiers are built in the U.S.A. from
the ground up specifically for high performance
car stereo systems. Car stereo systems are our only
business.
• All ORION amplifiers and accessories are manu¬
factured to exacting military standards. Extensive
testing and burn-in makes for super reliability in
even the toughest situations.
• Each amplifier contains a +15 volt power supply
which also services ORION accessories (“phantom
power”). This ensures maximum dynamic per¬
formance from all accessories while maintaining
optimum ground isolation to minimize potential
engine noise. A POWER ON indicator light is
included.
• Variable input sensitivity (gain adjust) allows use
with most radios and decks.
• Optically isolated remote turn-on circuit isolates
the radio or deck from the amplifier.
• FET switched 40 dB audio attenuator reduces
turn-on/turn-off '‘thump”.
• Parallel RCA and DIN Inputs provide considerable
versatility for interconnections.
• 6 Hz high pass filter eliminates dc offset.
• A wide variety of accessories arc available for flex¬
ibility in designing overall audio systems (refer to
figure 7).
This manual covers the following ORION gx and
GS type car audio power amplifiers:
Table of Contents
220gx Description and Equipment Supplied.3
240gx and GS-100 Description and Equipment
Supplied.4
280gx and GS-1000 Description and Equipment
Supplied. 5
2150 gx Description and Equipment Supplied .... 6
4100gx Description and Equipment Supplied .... 7
Orion Accessories, Description .8, 9
Orion Cable Assemblies.9
Using Existing 6x9 Speakers. 10
Use of a Crossover Module. 11
Use of a Bridging Module. 19
Use of a 30 dBLP Low Pass Filter. 12
Use of a 30 sBHP High Pass Filter. 12
Mounting the Amplifier. 26
Power and Ground Connections . 27
Speaker Connections. 34
System Adjustments. 35
220 gx (refer to page 3)
240 gx (refer to page 4)
280 gx (refer to page 5)
21 50 gx (refer to page 6)
4100gx (refer to page 7)
GS-100 (refer to page 4)
and
GS-1000 (refer to page 5)
NOTE: The GS-100 and GS-1000 Amplifiers are
hand tuned to customer requirements.
2

Orion 280gx Specifications

General

Brand	Orion
Model	280gx
Category	Amplifier
Language	English