Page 3 - What are the differences among Stereo,; T A B L E O F C O N T E N T S
3 Sound reinforcement ........................................... 20 SonorisationBeschallungSonido en vivo Instrument amplification ..................................... 21 Amplification d'instrumentInstrument-VerstärkungAmplificación de instrumento TROUBLESHOOTING .....................................
Page 4 - Konformitätserklärung
4 Declaration ofConformity QSC Audio Products, Inc. declares as its sole responsibility that the above named product is in compliance with the Council Directive 89/336/EEC of 3 May 1989 on the harmonization of the laws of the Member States relating to electromagnetic compatibility, as well as requir...
Page 5 - The PLX Series Amplifiers.; Features; P L X; La línea de amplificadores PLX.; Características; Die PLX Verstärkerserie.; Ausstattungsmerkmale
5 I N T R O D U C T I O N E I N F Ü H R U N G I N T R O D U C C I Ó N A V A N T - P R O P O S The PLX Series Amplifiers. PowerWave TM technology and a refined audio structure combine studio-quality performance with touring-quality portability. These fan- cooled, 2-channel, 2-RU, amps provide unprece...
Page 6 - Vorderseite; I N T R O D U C T I O N
6 Front panel 1. Power switch 2. Cooling vents 3. Gain control (Channel 1) 4. CLIP , -10 dB , -20 dB and SIGNAL indicator LEDs, both channels 5. Gain control (Channel 2) 6. POWER , BRIDGE , and PARALLEL indicator LEDs 7. Handles Panel frontal 1. Interruptor de encendido 2. Rejillas de ventilación 3....
Page 7 - UL; Rear panel
7 OUTPUT CLIP LIMIT ON CLIP LIMIT ON CH 1 P2 CH 2 CH 2 TIP 1/4 XLR PINOUT INPUT IMPEDANCE: 12K BALANCED INPUT PINOUTS MODE SWITCHES MODE SWITCHES CH 1 CH 2 PINOUT 1+ 1+ 2+ RNG SLV 1- 1- BRIDGE 2- P3 P1 FILTER ON FILTER ON 30 Hz FILTER 30 Hz FILTER BRIDGE MODE ON BRIDGE MODE OFF 50 Hz CH 1 CH 2 L L O...
Page 8 - Clip limiter; NON APPLICABLE; Limitador de picos; Clip Limiter
8 Clip limiter WHAT IT IS When the audio signal drives the amp's output circuit beyond its power capability, it clips, flattening the peaks of the waveform. The clip limiter detects this and quickly reduces the gain to minimize the amount of overdrive. To preserve as much of the program dynamics as ...
Page 9 - Input filter; Filtro de entrada; Eingangsfilter
9 Input filter WHAT IT IS The low-frequency (LF) filter rolls off signals below either 30 Hz or 50 Hz. This improves bass performance by limiting sub-audio cone motion, making more power available for the speakers' rated frequency range. The filter settings for each channel are controlled individual...
Page 10 - Parallel input mode; Modo de entradas paralelas
10 Parallel input mode WHAT IT IS The "Parallel Input" switches let you operate the amplifier in parallel mode, delivering the same signal to both channels without using a Y-cable. Each channel drives its own speaker load, with independent gain, filtering, and clip limiting. Set switch posit...
Page 11 - Bridge mono mode; Modo puenteado en mono; Monobrückenbetrieb
11 FEATURES & SETUP Bridge mono mode WHAT IT IS Bridged mono mode combines the power of both amp channels into one speaker, resulting in twice the voltage swing, four times the peak power, and approximately three times the sustained power of a single channel. This mode uses Channel 1's input, ga...
Page 12 - Parallel
12 Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input Stereo, bi-amp, 2-channel FEATURES & SETUP Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input Parallel What are the differencesamong Stereo, ParallelInput, and BridgeMono modes? STEREO MODE This is the "normal" way of using the amplifier, i...
Page 13 - Bridged Mono
13 Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input Bridged Mono FEATURES & SETUP SEE THE ADDITIONAL BRIDGEMONO MODE WARNINGS ONPAGE 11. BRIDGE MONO MODE This mode combines the full power capabilities of both channels into a single speaker system. The amplifier internally re-configures so that bo...
Page 14 - I N S T A L L A T I O N
14 A U D I O P O W E R A M P L I F I E R P L X 3 0 3 2 d B 2 0 2 2 2 4 2 6 2 8 I 8 I 4 8 - 3 0 3 2 2 0 2 2 2 4 2 6 2 8 d B I 8 I 4 8 - S I G N A L P O W E R B R I D G E P A R A L L E L - 2 0 d B - I O d B C L I P 1 C H A N N E L 2 P R O 3 0 0 0 W A T T 3 0 0 2 3.50" 88.9 mm 12.25" 311.2 mm 1...
Page 15 - C O N N E C T I O N S; Inputs; C O N E X I O N E S; Entradas
15 C O N N E C T I O N S OUTPUT CLIP LIMIT ON CLIP LIMIT ON CH 1 P2 CH 2 CH 2 TIP 1/4 XLR INPUT IMPEDANCE: 12K BALANCED INPUT PINOUTS INPUT PINOUTS MODE SWITCHES MODE SWITCHES CH 1 CH 2 PINOUT 1+ 1+ 2+ RNG SLV - 1- 1- BRIDGE 2- P3 P1 LF ON LF ON LF 30 Hz LF 30 Hz BRIDGE MODE ON BRIDGE MODE OFF LF 50...
Page 16 - SpeakonTM Outputs; Salidas SpeakonTM
16 Speakon™ Outputs The PLX amplifier offers a choice of output connections, with two Neutrik NL4MD Speakon jacks and two pairs of "touchproof" binding posts. The Speakon connector is designed specially for high-power speaker connections. It locks in place, prevents shock hazard, and assures...
Page 17 - Binding post outputs; Terminales con tornillo; C O N N E X I O N S; Bornes à écrou; A N S C H L Ü S S E; Anschlussklemmen; Netzanschluß
17 Binding post outputs Ê Strip back insulation not more than 13 mm (½ inch). ➋ Insert wire fully so that none of the conductor is exposed; tighten barrel (use coin if necessary). ➌ Non-European models only. ➍ Spade lugs must have insulated barrels to prevent electric shock. ½" 13 mm ≤ 7 AWG 4 m...
Page 18 - O P E R A T I O N; U T I L I S A T I O N B E T R I E B O P E R A C I Ó N
18 O P E R A T I O N AC power switch Before applying power, check all connections and turn down the gain controls. The "soft start" sequence starts with the POWER indicator LED at half brightness. A couple seconds later the fan starts and the amplifier cycles through one second of protective...
Page 20 - Biamp monitor; Mono mix; Stereo mix; Sound reinforcement
20 A P P L I C A T I O N S A P P L I C A T I O N S A N W E N D U N G S - B E I S P I E L E A P L I C A C I O N E S PLX amp (stereo mode) Mixing board Console de mixage Mischpult Mezclador 2-way monitorEnceinte monitor deux voiesZweiweg-AktivmonitorsystemBocina monitor dos vías Monitor mix Line-level...
Page 21 - Instrument amplification; cabinets; Active crossover; cabinet; A P P L I C A T I O N S A P P L I C A T I O N S; Instrument-Verstärkung
21 Instrument amplification Preamp PLX amp (parallel mode) Instrument input Entrée de l’instrument Instrumentseingang Entrada del instrumento Line-level outputSortie audio niveau ligneLinepegel-Audio-AusgangSalida de nivel de linéa Ch. 1 input Entrée Canal 1 Eingang Kanal 1 Entrada Canal 1 Effects ≥...
Page 22 - TROUBLESHOOTING; D É P A N N A G E F E H L E R B E H E B U N G BUSQUEDA DE AVERÍAS; Problema: no hay sonido
22 TROUBLESHOOTING Problem: no sound ➤ ➤ ➤ ➤ ➤ INDICATION: POWERINDICATOR NOT LIT • Check the AC plug. • Confirm that the AC outlet works by plugging in another device. If too many amplifiers are used on one outlet, the building's circuit breaker may trip and shut off power. • An overload in bridged...
Page 23 - No sound; Pas de son; BUSQUEDA DE AVERÍAS; No hay sonido; D É P A N N A G E F E H L E R B E H E B U N G; Kein Ton
23 No sound (continued) TROUBLESHOOTING S I G N A L P O W E R - 2 0 d B - I O d B C L I P 1 C H A N N E L 2 S I G N A L P O W E R - 2 0 d B - I O d B C L I P 1 C H A N N E L 2 Pas de son (suite) ➤ ➤ ➤ ➤ ➤ INDICATION: DEL DE SIGNALFONCTIONNENTNORMALEMENT • Si les DEL SIGNAL , -20dB et -10dB fonctionn...
Page 24 - F E H L E R B E H E B U N G; Problem: Verzerrungen
24 ➤ ➤ ➤ ➤ ➤ INDICATION: CLIP INDICATORNOT FLASHING • This could be caused by a faulty speaker or loose connection. Check the wiring and try another speaker. • The signal source may be clipping. Keep the amplifier gain controls at least halfway up so that the source does not have to be overdriven. T...
Page 25 - Problème: ronflement
25 Problem: hiss • Unplug the amplifier input to confirm that the hiss is coming from the source or a device upstream; erratic or popping noises indicate an electronic fault in the offending unit. • To keep the normal noise floor low, operate the primary signal source at full level, without clipping...
Page 26 - I N N E R W O R K I N G S; OPERACIÓN INTERNA; S O U S L E C A P O T; I N N E R E R A U F B A U
26 I N N E R W O R K I N G S An impressive amount of technology is packed "under the hood" of a PLX Series amplifier. Thousands of watts of power flow inches away from state-of-the-art low noise inputs. Precise circuit layout and thorough protection assure that all of this activity occurs sm...
Page 27 - I N N E R W O R K I N G S S O U S L E C A P O T I N N E R E R A U F B A U
27 High Performance Audio . High speed power transistors convert this DC power into the full range audio output which drives the speakers. High-current design and special dual-sense output feedback corrects errors on both sides of the speaker terminals, improving damping and control of speaker motio...
Page 32 - 675 MacArthur Boulevard Costa Mesa, California 92626 USA
32 QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA “QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office. ©1998 & 1999 QSC Audio Products, Inc.
