Instruction/ maintenance manual of the product APX400.2M Clarion
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INTRODUCTION The Clarion APX400.2M is a full-featured two-channel amplifier incorporating the following features: • Full frequency response with low distrotion and exceptional signal to noise perfor.
DESCRIPTION The Clarion APX400.2M two-channel amplifier provides 2x70 watts of power into a 4 ohm load and 2x110 watts of power into a 2 ohm load. This full featured model is an excellent choice for a variety of marine audio sound system configurations.
• 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 or 500mV to 5V for speaker level inputs, can accommodate input levels from virtually any brand of source unit.
CONNECTIONS FOR POWER AND SPEAKERS The rear panel of the APX400.2M contains power and speaker connections as shown below. 3 1. Left Speaker Output 2. Right Speaker Output 3.
APPLICA TIONS The Clarion APX400.2M 2-channel marine audio amplifier can be used in a variety of system applications. Here are some examples to help plan your own installation. Bridged- Mono Subwoofer System 4 Figure 3 - In this application the amplifier is bridged for mono operation to drive a subwoofer.
2-Channel Full-Range, Satellite, or Subwoofer Stereo System (Set INPUT SELECT Switch to STEREO) 5 Set X-Over Mode as shown. Set X-Over Mode as shown; adjust FREQ to speaker specifications. Set X-Over Mode as shown; adjust FREQ to speaker specifications.
Mixed-Mode Satellite and Subwoofer System (Set INPUT SELECT Switch to STEREO) 6 Set X-Over Mode to OFF. FREQ (hz) 80 100 125 150 200 L (mH) 8.0 6.4 5.1 4.2 3.2 C (uF) 497 398 318 265 199 NOTE: Chart values based on 4 ohm speakers. Figure 5 - The amplifier can be configured for a mixed-mode operation.
INSTALLA TION This section lists Mounting and W iring Precautions for installing a Clarion APX400.2M marine amplifier. Combined with the experience of a professional installer, these safeguards provide enough detail to successfully complete an installation.
5. Add an external fuse on the amplifier’ s positive (+) power lead and connect it as close as possible to the vessel’s (+) battery terminal. Use a rating that equals the total current consumption at full output of all amplifiers in the system. Adding an external fuse will protect the electrical system from short circuits that can cause a fire.
9 Figure 6. - Electrical connections for the APX400.2M..
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 vessel’s Ignition Switch to the ON position.
FINAL SYSTEM CHECKS 1. Start the engine and turn on the source unit. After a two-second delay , slowly increase the V olume Control and listen to the audio. If you hear any noise, static, distortion or no sound at all, check the connections, and also refer to T roubleshooting.
12 Problem Distorted audio. Solution Gain is not set properly, or damaged speaker cones. Review Setting Gain; inspect each speaker cone for signs of damage (i.e. frozen cone, burning smell, etc.) Problem Audio lacks punch. Solution Speakers wired incorrectly, which causes cancellation of bass frequencies.
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661 W. Redondo Beach Blvd. Gardena, CA 90247 1-800-GO-CLARION www.clarion-usa.com APX400.2M-10 Rev .2 (05/00).
An important point after buying a device Clarion APX400.2M (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Clarion APX400.2M yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Clarion APX400.2M - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Clarion APX400.2M you will learn all the available features of the product, as well as information on its operation. The information that you get Clarion APX400.2M will certainly help you make a decision on the purchase.
If you already are a holder of Clarion APX400.2M, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Clarion APX400.2M.
However, one of the most important roles played by the user manual is to help in solving problems with Clarion APX400.2M. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Clarion APX400.2M along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
