User manual CLARION APX400.4M

[. . . ] Protection circuits safeguard the amplifier against overheating, speaker shorts, or improper load conditions that may occur. All connections and controls 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. INPUT CONNECTIONS AND AUDIO CONTROL The front panel of the APX400. 4M contains connections for RCA Inputs and Audio Control as shown below. [. . . ] CONNECTIONS FOR POWER AND SPEAKERS The rear panel of the APX400. 4M contains power and speaker connections as shown below. Right Rear Speaker Output 3 APPLICATIONS The Clarion APX400. 4M 4-channel marine amplifier can be used in a variety of system applications. We'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 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 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 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 Mixed-Mode System On Rear; Full-Range Speakers On Front FREQ (hz) L (mH) C (uF) 80 100 125 150 200 8. 0 6. 4 5. 1 4. 2 3. 2 497 398 318 265 199 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% tolerance and capacitors rated at 100V. Do not overlap frequencies, as this may damage the amplifier. 8 INSTALLATION This section lists Mounting and Wiring 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 authorized Clarion dealer for installation recommendations. MOUNTING PRECAUTIONS Although the Clarion APX400. 4M incorporates heat sinks and protection circuits, mounting the amplifier in a tight space without any air movement can still damage internal circuitry over time. Choose a site that provides adequate ventilation and is isolated from the marine environment. For easy system setup, mount the amplifier so the front panel controls will be accessible after installation. For the most efficient cooling, mount the amplifier so cool air runs along the length of the fins rather than across them. Prior to drilling, make sure proposed mounting holes will not cut into the fuel tank, fuel lines, brake lines (under chassis), or electrical wiring. If you are not sure of the connections, contact your authorized Clarion dealer. Before installation, make sure the source unit Power switch is in the OFF position. Disconnect the negative (-) lead of the battery before making any power connections. When making connections, be sure that each connection is clean and secure. A secure clean ground connection is critical to the performance of your Clarion amplifier. [. . . ] Check battery and ground wiring at amplifier; also check battery connections. Check speaker continuity to ground, it should not show a common ground. Check location for adequate ventilation; consult an authorized Clarion Audio Dealer Problem Distorted audio. Review Setting Gain; inspect each speaker cone for signs of damage (i. e. [. . . ]