Orion 425 HCCA - INTRODUCTION

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.
• The HCCA series amplifiers incorporate high out¬
put current, enhancing audio performance and
improving sonic quality.
• 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 are available for flex¬
ibility in designing overall audio systems (refer to
page 6).
This manual covers the following ORION HCCA
amplifiers:
225 HCCA (refer to page 3)
250 HCCA (refer to page 4)
425 HCCA (refer to page 5)
Table of Contents
225 HCCA Description and Equipment Supplied . . 3
250 HCCA Description and Equipment Supplied . . 4
425 HCCA Description and Equipment Supplied . . 5
Orion Accessories, Description .6, 7
Orion Cable Assemblies. 7
Using Existing 6x9 Speakers. 8
Use of a Crossover Module.9
Use of a Bridging Module. 10
Use of a 30 dBLP Low Pass Filter. 10
Use of a 30 dBHP High Pass Filter. 10
Killer Systems. 10
Use of a 4-Channel Power Amplifier 425 HCCA . . 10
Mounting the Amplifier. 26
Power and Ground Connections . 27
Speaker Connections. 34
System Adjustments. 35
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