Manuale d’uso / di manutenzione del prodotto DCA Series del fabbricante QSC Audio
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1 Cinema Accessories for DCA Series amplifiers USER MANUAL ▼ ▼ ▼ ▼ ▼ XC-3 Two-way crossover with delay ▼ ▼ ▼ ▼ ▼ LF-3 Low-frequency filter with delay ▼ ▼ ▼ ▼ ▼ SF-3 Subwoofer filter *TD-000079-00* TD-000079-00 rev.
2 ©Copyright 1998, 2002 QSC Audio Products, Inc. All rights reserved. “QSC , ” “DCA , ” “DataPort , ” and the QSC logo are registered trademarks of QSC Audio Products, Inc.
3 TABLE OF CONTENTS INTRODUCTION Introduction and d escription of e ach m odel.................................4 CONFIGURING THE ACCESSORIES General c onfiguration i nformation, all m odels...............................5 XC-3 Setting u p the XC-3....
4 INTRODUCTION & DESCRIPTION OF EACH MODEL XC-3 This accessory is a two-way crossover, with the low frequency band fed to channel 1 of the amplifier and the high frequencies t o channel 2. An all-pass filter on the low frequency band delays the audio signal, permitting time alignment of a cone driver with a high-frequency horn.
5 CONFIGURING THE ACCESSORIES Configurable functions of the three accessory models Configure each accessory before you mount it to the ampli- fier. If an accessory is already mounted to an amplifier, always turn the amplifier off before changing switch set- tings, changing input or output connections, or detaching the accessory.
6 XC-3 Setting u p the XC-3 Setting up the XC-3 requires setting the DIP switches and selecting/inserting SIP resistors into the appropriate sockets. DIP switches #2, #9, and #10 must be set to the ON position (default settings for the XC-3). The flowchart below takes you through all the steps necessary before mounting the accessory to the amp.
7 Use these tables to determine the correct resistor values for the crossover frequencies and delays you need. The shaded values are for the high-pass frequency (f HP ) of the XC-3. XC-3 Setting u p the XC-3 Effects of high frequency boost on frequency response (crossover frequency = 500 Hz).
8 Setup flowchart for the LF-3 Setting up the LF-3 requires setting the DIP switches and selecting/inserting SIP resistors into the appropriate sockets. DIP switches #2 and #4 through #9 must be set to OFF, and switch #3 set to ON (factory default for proper operation).
9 LF-3 Setting Up the LF-3 LF-3 Factory-installed SIPs LF-3 Factory Switch Settings LF-3 Recommended Amplifier Settings f xo 350 Hz, both channels (18 k Ω SIP resistor installed in J6 and J8) Delay 1.
10 Setting up the SF-3 SF-3 Setting u p the SF-3 Setting up the SF-3 requires setting the DIP switches, and selecting/inserting SIP resistors into the appropriate sockets. DIP switches #1 through #6 and #10 must be set to OFF (factory default for proper operation).
11 SF-3 Factory-installed SIPs fHP= 30 Hz (27 k Ω SIP resistor in J2) fLP= 250 Hz (22 k Ω SIP resistor in J6) SF-3 Factory Switch Settings Switches 1 through 6 and Switch 10 OFF: Default setting f.
12 An accessory may be mounted with the amplifier either in or out of the rack, even if the amp is installed with rear rack ears. MOUNTING- All Models Mounting the Accessories 1. Turn off the amplifier before installing the accessory. 2. Make sure the SIP resistor networks are installed properly and no SIP sockets are empty.
13 Setting up the DCA Accessories in the Cinema Sound System If you are unable to obtain a satisfactory frequency response or SPL on a channel, carefully check the wiring and connections. Some likely causes are reversed speaker polarity on one or more drivers, loose or broken wiring or connections, or blown or damaged speaker drivers.
14 Cleaning The faceplate and chassis can be cleaned with a soft cloth and nonabrasive, noncorrosive, mild cleaning solution. Products like Simple Green and Windex work well. Do not use powders or scrubbing pads of any type as they are usually abrasive and will permanently damage the finish of your cinema accessory.
15 WORLD WIDE WEB: http://www.qscaudio.com FACSIMILE (FAX) NUMBERS: Sales & Marketing FAX +1 (714) 754-6174 Technical Services FAX +1 (714) 754-6173 TELEPHONE NUMBERS: Main Number +1 (714) 754-6175 Sales Direct Line +1 (714) 957-7100 or (800) 854-4079 toll free (U.
16 © Copyright 1998, 2002 QSC Audio Products, Inc. All rights reserved. “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.
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 QSC Audio DCA Series 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 QSC Audio DCA Series - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso QSC Audio DCA Series imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul QSC Audio DCA Series ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il QSC Audio DCA Series, 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 QSC Audio DCA Series.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il QSC Audio DCA Series. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo QSC Audio DCA Series 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.
