Instruction/ maintenance manual of the product 6550 Directed Audio
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model 6550.
2 © 2002 Directed Electronics, Inc.
3 © 2002 Directed Electronics, Inc T ABLE OF CONTENTS CONGRA TULA TIONS Congratulations for choosing a Directed Audio power amplifier from Directed Electronics, the industr y leader in high quality automotive security and audio equipment since 1990.
LIMITED TWO-YEAR CONSUMER W ARRANTY 4 © 2002 Directed Electronics, Inc Directed Electronics, Inc. promises to the original purchaser , to replace this product should it prove to be defective in workm.
5 © 2002 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.
6 © 2002 Directed Electronics, Inc INST ALLA TION GUIDELINES 1. Please read this owner’ s manual carefully before installing this ampli- fier . 2. Disconnect the batter y ground terminal prior to making any elec- trical connections.
7 © 2002 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.
8 © 2002 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 8 volts. 2. R R C C A A O O u u t t p p u u t t J J a a c c k k s s - These pass through RCA jacks can be used to send a signal to a second amplifier .
9 © 2002 Directed Electronics, Inc REM GND BAT T 30A x 2 FUSE RR LL CH 1+2 CH 3+4 CH 5+6 BRIDGE R L L R SPEAKER OUTPUT FIGURE 2—AMPLIFIER CONNECTIONS 6550 REAR 1 4 2 5 1. S S p p e e a a k k e e r r O O u u t t T T e e r r m m i i n n a a l l s s - Connect the speakers to these terminals.
10 © 2002 Directed Electronics, Inc TOP P ANEL CONTROLS LPF HPF FLA T BASS EQ OFF ON FREQ FREQ FREQ 50Hz 50Hz 50Hz 500Hz 500Hz 500Hz LPF LPF HPF HPF F LAT F L AT 5+6 GAIN 1+2 3+4 5+ 6 INPUT INP UT 3+4 5+6 GAIN GAIN MIN MIN MIN MAX MAX MAX OFF OFF ON ON FIGURE 3—AMPLIFIER CONTROLS TOP 5 1.
SPEAKER WIRING DIAGRAMS 11 © 2002 Directed Electronics, Inc Control Panel Cover The gain and filter controls are located under a control panel cover on top of the amplifier . The control panel cover must be removed to gain access to the gain and filter controls.
12 © 2002 Directed Electronics, Inc T ri amp operation (top view) Bridged operation (top view) Three Channel N N O O T T E E : : When wiring the 6550 for three channel operation, connect the left audio signal to both channels one and two RCA jacks and the right audio signal to both channels three and four RCA jacks using RCA Y adapters.
13 © 2002 Directed Electronics, Inc CROSSOVER SETTINGS AND GAIN ADJUSTMENT Y our Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance.
SPECIFICA TIONS 14 © 2002 Directed Electronics, Inc RMS continuous power per channel, Channels 1-4 driven into 4 ohms from 20 to 20,000 Hz, with less than 0.08% total Harmonic Distortion @ 14.4 VDC. Channel 5-6 driven into 4 ohms from 20-250 Hz, with less than 0.
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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 available.
An important point after buying a device Directed Audio 6550 (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 6550 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 6550 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Directed Audio 6550 you will learn all the available features of the product, as well as information on its operation. The information that you get Directed Audio 6550 will certainly help you make a decision on the purchase.
If you already are a holder of Directed Audio 6550, 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 6550.
However, one of the most important roles played by the user manual is to help in solving problems with Directed Audio 6550. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Directed Audio 6550 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
