Manuale d’uso / di manutenzione del prodotto A404 del fabbricante 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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Directed Audio A404 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Directed Audio A404 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Directed Audio A404 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Directed Audio A404 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Directed Audio A404, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Directed Audio A404.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Directed Audio A404. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Directed Audio A404 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
