Clarion APX2120 User Manual
Owner’s manual
APX2120
APX4240
APX1300
APX AMPLIFIERS
APX2120/APX4240/APX1300 1
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English
Thank you for purchasing this Clarion product.
• Please read this owner’s manual in its entirety before operating this equipment.
• After reading this manual, keep it handy, such as in your glove compartment.
• Save your sales receipt. The warranty at the end of this manual and your sales
receipt are essential for warranty service.
FCC Approval
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to consult the dealer or an experienced radio/TV technician for help.
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Contents
1. FEATURES ............................................................................................................. 4
2. PRECAUTIONS ...................................................................................................... 5
Installation ............................................................................................................... 5
3. CONTROLS ............................................................................................................ 6
4. OPERATIONS ......................................................................................................... 7
Setting the operating level ...................................................................................... 7
Improving bass sound ............................................................................................. 7
Designing a more advanced system ....................................................................... 7
Connecting a source unit without RCA outputs ...................................................... 7
Care and maintenance ........................................................................................... 8
5. INSTALLATION AND WIRING................................................................................ 8
What is included in the box ..................................................................................... 8
Mounting precautions ............................................................................................. 8
Wiring precautions .................................................................................................. 9
Power and speaker connections ........................................................................... 10
Applications .......................................................................................................... 11
Setting the gain ..................................................................................................... 14
Setting the crossover ............................................................................................ 15
Setting the bass boost .......................................................................................... 15
Final system checks ............................................................................................. 15
6. TROUBLESHOOTING .......................................................................................... 16
7. GLOSSARY .......................................................................................................... 17
8. SPECIFICATIONS ................................................................................................ 17
9. LIMITED WARRANTY INFORMATION ................................................................ 18
English
APX2120/APX4240/APX1300 3
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English
1. FEATURES
The Clarion APX2120, APX4240, and APX1300 amplifiers fit a variety of system
configurations and provide these features:
• Full frequency response with low distortion and exceptional signal-to-noise
performance
• Advanced circuitry design provides bridgeable outputs for use in a variety of
applications
• Independent electronic crossovers, each with a 12dB per octave slope and full
adjustment range (from 50Hz to 300Hz) to aid in audio system design
• Bass boost circuit to reinforce low frequency signals that may be lost due to
subwoofer box design
• Adjustable input level controls with ground loop isolation to accept a wide range of
input signals
• Remote turn-on with “soft start” muting to prevent turn-on “thump”
• Protection circuits for overheating and speaker shorts
• 2-Ohm load capable of driving a variety of speaker systems
• Gold-plated input/output connectors and an on-board automotive-type fuse
• Aluminum heat sink for efficient heat dissipation
• Low profile, compact footprint to accommodate space limitations
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2. PRECAUTIONS
• Do not operate this product in ways other than those described in this manual.
• Do not disassemble or modify this product.
• Do not pour liquid or poke foreign objects into the unit. Water and humidity will
damage internal circuitry.
• If the unit becomes wet, turn off all power and ask your authorized Clarion dealer to
clean or service the unit.
Failure to observe these precautions may damage your car or the amplifier, and may
void the warranty.
WARNING
Exposure to continuous sound levels of 85dB or higher may
result in hearing loss. Although Clarion products are capable
of producing high sound pressure levels, please use your
product at reasonable levels.
While operating your vehicle, please observe all local sound
ordinances for your safety.
Installation
Installation of mobile audio and video components requires experience with a variety of
mechanical and electrical procedures. Although this manual provides general installation and operation instructions, it does not show the exact installation methods for your
particular vehicle.
If you do not have the required knowledge and experience to successfully complete the
installation, consult an authorized Clarion dealer about professional installation options.
English
APX2120/APX4240/APX1300 5
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3. CONTROLS
1
4
7 81211
APX1300 controls and input connections
1. RCA input jacks
2. Front RCA input jacks
3. Rear RCA input jacks
4. Gain control
5. Front gain control
6. Rear gain control
7. Bass boost control
1211 1
7
4 8
APX2120 controls and input connections
7
5
6
32
7
APX4240 controls and input connections
8. Speaker level inputs
9. Front speaker level inputs
10. Rear speaker level
inputs
11. Frequency control
12. X-Over mode switch
13. Front frequency control
14. Front X-Over mode switch
15. Rear frequency control
16. Rear X-Over mode switch
161514 13 109
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