Manuale d’uso / di manutenzione del prodotto PLX 1104 del fabbricante QSC Audio
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PLX Series Professional Audio Amplifiers User Manual 4-ohm minimum imped ance models with Sp eakon ® output termina ls: PLX 1104 PLX 1804 2-ohm minimum imped ance models with Speakon and bindin g post terminals: PLX 1802 PLX 2502 PLX 3102 PLX 3602 *TD-000214-00* TD-000214-00 Rev .
2 Important Safety Precautions & Explanation of Symbols 1- Read these instructions. 2- Keep these instructions. 3- Heed all warn ings. 4- Follow all instr uctions. 5- WARNING: T o prevent fire or electric shock, do not expose this equ ipment to rain or moistu re.
3 Introduction Thank you for purchasing this QSC power amplifier . Please read t he following directions to obtain the best results. This manual covers all models of the PLX series.
4 Rack Mounting Use four screws and washers to mount the amplifier to the equipment rack rails. T o use the amplifier outside a rack, attach the self-adhesive rubber feet to the bottom. For portable, mobile, or other applications where the rack assembly may be moved, we strongly recommend support- ing the rear of the amplifier .
5 Cooling Air flows from the rack, into the back of the amplifier , and out the front. This keeps the rack cool. The fan automatically runs faster when the amp is working hard. Do not block the front or rear air vents! AC Mains Connection Connect AC power to the IEC socket on the back of the amplifier .
6 Input Configuration Switch (PLX 1802/2502/3102/3602 models only) Select the input configuration by sliding the switch to the position which corresponds with the desired input configuration.
7 Inputs Each channel has a balanced XLR (female) and 1/4-inch TRS input. The XLR and TRS connectors for each channel are wired in parallel and can be used for “ daisy chain- ing” an input signal to additional amplifiers. The input impedance is 20k ohm balanced or 10k ohm unbalanced.
8 Outputs The PLX 1104 and PLX 1804 models are equipped with Speakon output connectors for each channel. PLX 1802, PLX 2502, PLX 3102, and PLX 3602 models are equipped with Speakon and binding post output connectors. Wiring connections are shown on the back of the chassis.
9 LED Indicators The LED indicators can be used to monitor system operation and identify common problems. POWER (PWR): BLUE Normal indication: •AC switch ON: LED will illuminate. If no indication: •Check AC power cord and AC outlet. •Confirm that AC switch is in ON position.
10 Gain Controls T urn the GAIN controls clockwise to increase gain and counter clockwise to decre ase gain. The GAIN controls are marked in dB of attenuation. There are 21 detents for repeatable adjustments. The upper 14 steps are about 1 dB each, and settings should normally be made within this range.
11 Protection Sy stems Both amplifier platforms are fully protected against adverse conditions, but their behavior and user adjustments are different. PLX 1802/2502/3102/3602 models: •Clip Limiting may be switched on the rear panel to prevent seve re overdrive.
12 Specifications PL X 1104, PLX 1804 PLX 1104 PLX 1804 OUTPUT POWER (Watts) (1) 20 - 20k Hz, 0.05% THD, 8 ohms/Ch. 310 550 1k Hz, 0.1% THD (EIA), 8 ohms/Ch. 325 600 20 - 20k Hz, 0.05% THD, 4 ohms/Ch. 500 800 1k Hz, 0.1% THD (EIA), 4 ohms/Ch. 550 900 DISTORTION, SMPTE-IM 0.
13 Specifications PLX 1802, PL X 2502, PLX 3102, PLX 3602 PLX 1802 PLX 2502 PLX 3102 PLX 3602 OUTPUT POWER (W atts) (1 ) 20 - 20k Hz, 0.05% THD, 8 ohms/Ch. 320 425 550 725 1k Hz, 0.1% THD (EIA), 8 ohms/Ch. 330 450 600 775 20 - 20k Hz, 0.05% THD, 4 ohms/Ch.
14 Appendix A: Speakon Wiring Reference Amplifier co nnection T o loudspea ker T wo-wi re, single-channel c onnection Four -wire, two-channel connect ion Bridge mode connect ion NOTE! Ensure proper po.
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QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA ©2006 “QSC” and the QSC logo are registered wi th the U.S. Patent and T rademark 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 PLX 1104 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 PLX 1104 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso QSC Audio PLX 1104 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul QSC Audio PLX 1104 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il QSC Audio PLX 1104, 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 PLX 1104.
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 PLX 1104. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo QSC Audio PLX 1104 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.
