Instruction/ maintenance manual of the product A502 Directed Audio
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models A502 A404 OWNER’S MANUAL.
2 2 © 2004 Directed Electronics, Inc T ABLE OF CONTENTS CONGRA TULA TIONS Congratulations for choosing a Directed Audio power amplifier from Directed Electronics, the industry leader in high quality automotive security and audio equipment since 1990.
LIMITED TWO-YEAR CONSUMER W ARRANTY 3 3 © 2004 Directed Electronics, Inc Directed Electronics, Inc. promises to the original purchaser , to replace this product should it prove to be defective in wor.
4 4 © 2004 Directed Electronics, Inc High-powered car audio systems may produce sound pressure levels that exceed the threshold at which hearing loss may result. They may also impair a driver’ s ability to hear traffic sounds or emergency vehi- cles.
5 5 © 2004 Directed Electronics, Inc INST ALLA TION GUIDELINES 1. Please read this owner’ s manual carefully before installing this ampli- fier . 2.
6 6 © 2004 Directed Electronics, Inc speaker load, the more heat is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable.
7 7 © 2004 Directed Electronics, Inc 1. R R C C A A I I n n p p u u t t J J a a c c k k s s - - Accepts line level outputs from head units or signal processors at voltages between 150mV and 7.
1. P P o o w w e e r r F F u u s s e e - - This fuse protects the amplifier against internal electrical damage and is meant to protect the amplifier only . All other power connections should be fused at the source. The A502 uses 1-30A fuse, and the A404 uses 1-30A fuse.
9 9 1 2 3 4 5 FIGURE 3—AMPLIFIER CONNECTIONS A502 REAR © 2004 Directed Electronics, Inc 1 2 3 4 5 FIGURE 4—AMPLIFIER CONNECTIONS A404 REAR wire. DO NOT connect this terminal directly to the vehicle battery ground terminal or any other factory ground points.
1 1 0 0 © 2004 Directed Electronics, Inc SPEAKER WIRING DIAGRAMS A502 L CH R CH B R I D G E D L CH R CH INDUCTOR CAP CAP SUB Stereo operation (top view) Mono operation (top view) Simultaneous stereo/.
1 1 1 1 © 2004 Directed Electronics, Inc SPEAKER WIRING DIAGRAMS A404 N N O O T T E E : : For bridged two channel operation as shown in this diagram, connect right channel RCA cables to the front inputs of the amplifier , and left channel RCA cables to the rear inputs of the amplifier .
1 1 2 2 © 2004 Directed Electronics, Inc Simultaneous Stereo (top view) B R I D G E D L CH R CH INDUCTOR CAP CAP SUB B R I D G E D L CH R CH INDUCTOR CAP CAP SUB REAR FRONT Stereo Operation - 4 Chann.
1 1 3 3 © 2004 Directed Electronics, Inc B R I D G E D L CH R CH B R I D G E D L CH R CH SUB REAR (LEFT ) REAR (RIGHT ) 2 Channel Stereo with Mono Sub (top view).
1 1 4 4 © 2004 Directed Electronics, Inc CROSSOVER SETTINGS AND GAIN ADJUSTMENT Y our Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance.
1 1 5 5 © 2004 Directed Electronics, Inc LED TUBE INST ALLA TION (OPTIONAL) This Directed Audio amplifier has been designed with a custom heat sink that can accommodate two (optional—not supplied) V ARAD LED tubes. 1. Before installing the LED tubes, remove and discard the mounting feet from the V ARAD LED tubes.
1 1 6 6 © 2004 Directed Electronics, Inc CEA SPECIFICA TIONS A A 5 5 0 0 2 2 Power Output: 90 Watts RMS x 2 at 4 ohms and < 1% THD+N Signal to Noise Ratio: -70 dBA (reference 1 Watt into 4 ohms) A.
1 1 7 7 © 2004 Directed Electronics, Inc SPECIFICA TIONS A A 5 5 0 0 2 2 A A 4 4 0 0 4 4 RMS continuous Power 4 Ohm 1 75W x 2 35W x 4 RMS continuous Power 2 Ohm 2 125W x 2 50W x 4 RMS continuous Powe.
2 2 0 0 © 2004 Directed Electronics, Inc The company behind this system is Directed Electronics, Inc. Since its inception, Directed has had one purpose, to provide customers with the finest vehicle security , car stereo products, rear seat entertainment, and accessories avail- able.
An important point after buying a device Directed Audio A502 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Directed Audio A502 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 Directed Audio A502 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Directed Audio A502 you will learn all the available features of the product, as well as information on its operation. The information that you get Directed Audio A502 will certainly help you make a decision on the purchase.
If you already are a holder of Directed Audio A502, 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 Directed Audio A502.
However, one of the most important roles played by the user manual is to help in solving problems with Directed Audio A502. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Directed Audio A502 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
