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Clarion APX400 manual

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Table of contents for the manual

  • Page 1

    [...]

  • Page 2

    INTRODUCTION The Clarion APX400.4M is a full-featured four-channel amplifier. It comes with the following features: • Full frequency response with low distortion and exceptional signal to noise performance • Advanced circuit design features bridgeable and mixed mode operation for use in a variety of 4, 3 or 2 channel systems • Independent fro[...]

  • Page 3

    DESCRIPTION The Clarion APX400.4M 4-channel marine amplifier is an excellent choice for creating a variety of multi-channel sound systems. It features built-in system design flexibility that allows you to create a 2, 3 or 4 channel amplifier with a flip of a switch. Y ou can also configure the front or rear amplifier sections for a mixed mode opera[...]

  • Page 4

    RIGHT, FRONT LEFT , REAR RIGHT and REAR LEFT. The Gain Controls provide a wide adjustment range to accommodate output levels from any brand of source unit. • Gain Controls - Seperate Front and Rear Gain Controls allow you to set the nominal operating level of the amplifier . The amplifier ’ s range, 250mV to 2.5V for RCA inputs or 500mV to 5V f[...]

  • Page 5

    • Rear Channel Input Select - This switch allows you to use a 2 channel input to drive all 4 channels of this amplifier . • Speaker Level Inputs - These provide connections for a high-level stereo source. In addition, these connections are provided for installations where the source unit’s RCAoutputs are unavailable. W ARNING : When using the[...]

  • Page 6

    APPLICA TIONS The Clarion APX400.4M 4-channel marine amplifier can be used in a variety of system applications. W e’ve enclosed some example systems to help plan your own installation. 4-Channel Full-Range Stereo System Figure 3 - In this application, the APX400.4M is used as a 4-channel amplifier to drive four full-range speakers in stereo. 4[...]

  • Page 7

    4-Channel Stereo System 2-Channels High-Pass, 2-Channels Low-Pass Figure 4 - In this 4-channel system, the APX400.4M drives a pair of stereo satellites for the front and a pair of stereo subwoofers for the rear. Note the filter settings. 5[...]

  • Page 8

    2-Channel Stereo System with Low-Pass Bridged Mono Channel Figure 5 - The APX400.4M can also be used to drive a pair of stereo satellites for the front and a single mono subwoofer for the rear. Note the filter settings. 6[...]

  • Page 9

    2-Channel High Power Systems (Satellite or Subwoofer) Figure 6 - The APX400.4M can be set up as a 2-channel high-power amplifier to drive a pair of satellites (or subwoofers). 7[...]

  • Page 10

    Mixed-Mode System On Rear; Full-Range Speakers On Front NOTE: Chart values based on 4 ohm speakers. Figure 7 - The amplifier can be configured for a mixed-mode operation on either channels 1/2 or 3/4 amplifier sections. The table provides component values to create a 6dB per octave crossover at specified frequencies. Use components that have a + 5%[...]

  • Page 11

    INSTALLA TION This section lists Mounting and W iring Precautions for installing the Clarion APX400.4M. Combined with the experience of a professional installer, these safeguards provide enough detail to successfully complete an installation. If you do not have the necessary skills, do not install the amplifier yourself. Instead, see your authorize[...]

  • Page 12

    6. Refer to the Figure 8 when making electrical connections. Connect the amplifier’ s positive (+) lead via a fuse directly to the positive (+) terminal on the battery. Do not connect this wire to the vessel’s fuse panel. Use red- insulated 10-gauge (or larger) wire for the amplifier’ s positive (+) power lead and the same-gauge black insulat[...]

  • Page 13

    SETTING THE GAIN After completing the installation, follow these steps to set the Gain Control and then perform the Final System Checks. 1. T urn the Gain Control all the way counter-clockwise. 2. T urn the vehicle’s Ignition Switch to the ON position. Then turn the ON/OFF Switch on the source units to the ON position. Set all T one or Equalizati[...]

  • Page 14

    Problem No Audio. Solution Low or no remote turn-on voltage. Check remote connections at amplifier and source unit. Blown amplifier fuse. Replace with new fast-blow fuse (same rating). Power wires not connected. Check battery and ground wiring at amplifier; also check battery connections. Speaker leads shorted. Check speaker continuity to ground, i[...]

  • Page 15

    13 Problem Audio lacks punch. Solution Speakers wired incorrectly, which causes cancellation of bass frequencies. Check polarity of wires from amplifier to each speaker as defined by the system design. Problem Amplifier fuse keeps blowing. Solution Incorrect wiring or short circuit. Review Installation and check all wiring connections. Problem Whin[...]

  • Page 16

    661 W. Redondo Beach Blvd. Gardena, CA 90247 1-800-GO-CLARION www.clarion-usa.com APX400.4M-10 Re v .2 (05/00)[...]