Clarion APX1000.2 User Manual
INTRODUCTION
The Clarion APX1000.2 is a full-featured two-channel amplifier incorporating
the following features:
• Full frequency response with low distrotion and exceptional signal to noise
performance
• Advanced circuit design that features bridgeable and mixed mode operation
for use in various systems, including those with satellite speakers and/or
subwoofers
• Variable high-pass/low-pass electronic crossover with a selectable 12 or
24dB per octave slope and full adjustable range (from 50Hz to 5.5kHz) to
aid in audio system design
• Variable 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 accepting a wide
range of input signals
• Remote turn-on with “soft start” muting to prevent turn-on “thump”
• Pulse-width modulated (PWM) MOSFET power supply with low AM RFI
and protection circuits for overheating and speaker shorts
• 2-ohm load capability to drive a variety of speaker systems
• Gold-plated input/output connectors and an extenal automotive type fuse
• Aluminum heat sink for efficient heat dissipation
• Low profile, compact size for space limited installations
• Power save lowers the current drawn when system volume is reduced
ABOUT THE MANUAL AND WARRANTY
To start enjoying your new Clarion two-channel amplifier, please read the
instructions listed in this manual. Keep all instructions for future reference.
Please fill out and send in the enclosed warranty card to protect your purchase
and aid in warranty service. Also, save your original sales receipt as proof of
purchase.
TABLE OF CONTENTS
Description • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 3
Input Connections and Audio Controls • • • • • • • • • • • • • • • • • • • • 3
Connections for Power and Speakers • • • • • • • • • • • • • • • • • • • • • 5
Applications • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6
Installation • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9
Mounting Precautions • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9
Wiring Precautions • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 9
Setting the Gain • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 12
Setting the Crossover • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 12
Setting the Bass Boost • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 12
Final System Checks • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 13
Troubleshooting • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 13
Product Specs • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 14
Notes • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 15
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DESCRIPTION
The Clarion APX1000.2 two-channel amplifier provides 2x270 watts of power
into a 4 ohm load and 2x525 watts of power into a 2 ohm load. This full
featured model is an excellent choice for a variety of car audio sound system
configurations.
The APX1000.2 uses an unregulated MOSFET power supply for superior
control of output wattage. Atoroid-coil transformer yields maximum power
transfer with minimum heat loss. Careful attention to circuit design keeps AM
RFI at low levels, so you won’t hear unwanted noise when the level is cranked
up. Protection circuits safeguard the amplifier when overheating and speaker
shorts or improper load conditions occur.
All connections and controls of the APX1000.2 are on the end panels and are
easy to understand. We use gold-plated RCA and barrier connectors to ensure
the best electrical connection for your system. Included is an external
automotive type fuse that is easy to replace.
INPUT CONNECTIONS AND AUDIO CONTROLS
The front panel of the APX1000.2 contains connections for RCA Inputs, Pass
Through Outputs and Audio Controls as shown below.
The RCAInput and Output Connectors are gold-plated RCA Jacks and are
labeled as LEFT and RIGHT.
Figure 1-
1. Status LEDs
2. Bass Boost Control
3. Freq (Hz) Selection Control
4. X-Over Frequency Multiplier Switch
5. X-Over Mode Switch
6. X-Over Slope Selection Switch
7. X-Over Bypass Switch
8. Left Gain Control
9. Right Gain Control
10. Input Selection Switch
11. RCAInput Jacks
12. RCAPass Through Outputs
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• Gain Control - This allows you to set the nominal operating level of the
amplifier. The amplifier’s range, 250mV to 2.5V for RCA inputs, can
accommodate input levels from virtually any brand of source unit.
• Bass Boost Control- The amplifier also features a “high-Q” (i.e. narrow
frequency band) Bass Boost circuit. It acts much like an equlaizer, with
adjustable gain (from 0 to +18dB) fixed at 45Hz. Use this feature to tune lowfrequency audio response to compensate for a less than ideal subwoofer
enclosure design. The added boost produces rich, full bass tones that are
normally difficult to reproduce in the car audio environment. NOTE: If Bass
Boost is undesired, set Bass Boost to 0dB.
• Pass Through - This allows you to “daisy chain” multiple amplifiers by
internally splitting off the RCAinput to the Pass Through output. (The Pass
Through output signal will be identical to the input signal. For example, full
range in equals full range out, 50Hz low-pass in equals 50Hz low-pass out.)
• Power Save - When engaged, the amplifier will automatically minimize the
current drawn while the amplifier is idle or the system volume is at a low level.
This feature increases your amplifier’s efficiency by not drawing unnecessary
current.
High-pass/Low-pass Filter Controls
• Frequency (Hz) Selection Control - The crossover frequency is fully
adjustable between 50Hz and 5500Hz (via the Crossover Frequency Multiplier)
for a wide range of crossover points. Use this feature, along with your speaker
manufacturer’s recommended crossover frequencies, to quickly design a more
advanced system (see Applications on page 5.) NOTE: If the X-Over Mode
Switch is set to FULL, varying the Freq (Hz) Control will produce no effect.
• Crossover Frequency Multiplier Switch - When engaged, this switch
increases the crossover frequency by a factor of 10. Example: If the Freq (Hz)
dial is set for 240 Hz, pushing in the multiplier Switch changes the setting to
2400 Hz.
• X-Over Mode Switch - This switch is equipped with a selectable 12 or 24dB
per octave electronic filter for precise frequency attenuation with minimal
phase distortion. The steep crossover slope keeps midrange tones out of the
subwoofer and thereby eliminates an unnatural “nasal” tone quality in the audio
system. A filter is activated by sliding the X-Over Mode Switch to either LP or
HP.
• Input Mode Switch - This switch allows you to set the input mode. Stereo
input allows full left and right stereo operation. Right (bridged) input allows
single channel input for bridged operation. This is especially useful in highpowered systems when using one amplifier for each subwoofer/speaker. L + R
(sum mono) allows a stereo input to be summed into a mono output.
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CONNECTIONS FOR POWER AND SPEAKERS
The rear panel of the APX1000.2 contains power and speaker connections as
shown below.
Figure 2-
1. Power Save Selector Switch
2. Left Speaker Output
3. Right Speaker Output
4. Ground Input
5. Remote Turn-on Input
6. Battery + 12v Input
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