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QSC Audio PLX 1202 manual

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  • Page 1

    1 ▼ PLX 1202 ▼ PLX 1602 ▼ PLX 2402 ▼ PLX 3002 ▼ PLX 3402 PLX ™ Series Amplifiers TD-000072-00 Rev. C User Manual Manuel de l’utilisateur Bedienhandbuch Manual del Usuario *TD-000072-00*[...]

  • Page 2

    2 Erklärung der Bildsymbole Das Blitzzeichen innerhalb eines gleichseitigen Dreiecks warnt den Benutzer vor nicht isolierter , gefährlicher Spannung im Inneren des Gerätes. Diese Spannung ist hoch genug, um Personen durch elektrischen Schlag zu gefährden. Das Ausrufungszeichen innerhalb eines gleichseitigen Dreiecks weist den Benutzer auf wicht[...]

  • Page 3

    3 Sound reinforcement ........................................... 20 Sonorisation Beschallung Sonido en vivo Instrument amplification ..................................... 21 Amplification d'instrument Instrument-Verstärkung Amplificación de instrumento TROUBLESHOOTING ....................................... 22–25 DÉPANNAGE FEHLERBEHEBUNG[...]

  • Page 4

    4 Declaration of Conformity 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 requirements of the harmonized product standard EN 5501[...]

  • Page 5

    5 INTRODUCTION EINFÜHRUNG INTRODUCCIÓN A V ANT -PROPOS 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 unprecedented power in a strong, compact chassis. Features • Independent, user-defeatable cl[...]

  • Page 6

    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. Control de ganancia (Canal 1) 4. Indicadores LED[...]

  • Page 7

    7 OUTPUT CLIP LIMIT ON CLIP LIMIT ON CH 1 P2 CH 2 CH 2 TIP 1/4 XLR PINOUT INPUT IMPEDANCE: 1 2K BAL ANCED 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 O C C K K BRIDGE MONO 2 1 INPUT INPUT INPUTS PA[...]

  • Page 8

    8 Clip limiter WHA T 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. T o preserve as much of the program dynamics as possible, limiting occurs only during actu[...]

  • Page 9

    9 Input filter WHA T 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 individually through the DIP switch settings shown. Wh[...]

  • Page 10

    10 Parallel input mode WHA T 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 positions 4, 5, and 6 "ON" to couple the i[...]

  • Page 11

    11 FEA TURES & SETUP Bridge mono mode WHA T 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, gain control, input filter , and clip limit[...]

  • Page 12

    12 Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input Stereo, bi-amp, 2-channel FEA TURES & SETUP Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input P arallel What are the differences among Stereo, Parallel Input, and Bridge Mono modes? STEREO MODE This is the "normal" way of using the amplifier , in which each channel is fully independent.[...]

  • Page 13

    13 Ch. 1 Ch. 1 Ch. 2 Ch. 2 Ch. 1 input Ch. 2 input Bridged Mono FEA TURES & SETUP SEE THE ADDITIONAL BRIDGE MONO MODE WARNINGS ON P AGE 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 both channels operate as a unit. This delivers d[...]

  • Page 14

    14 A U D I O POWER AMPLIFIER PL X 30 32 dB 20 22 24 26 28 I8 I4 8 - 30 32 20 22 24 26 28 dB I8 I4 8 - SIGNAL POWER BRIDGE PARALLEL -20dB -IOdB CLIP 1 C H A N N E L 2 P R O 3 0 0 0 W A T T 3002 3.50" 88.9 mm 12.25" 311.2 mm 13.25" 336.6 mm 17.30" 440 mm All four screws: T outes les quatre vis: Alle vier Schrauben: T odos cuatro t[...]

  • Page 15

    15 CONNECTIONS OUTPUT CLIP LIMIT ON CLIP LIMIT ON CH 1 P2 CH 2 CH 2 TIP 1/4 XLR INPUT IMPEDANCE: 1 2K BAL ANCED INPUT PINOUTS INPUT PINOUTS MODE SWITCHES MODE SWITCHES CH 1 CH 2 PINOUT 1+ 1+ 2+ RNG SL V - 1- 1- BRIDGE 2- P3 P1 LF ON LF ON LF 30 Hz LF 30 Hz BRIDGE MODE ON BRIDGE MODE OFF LF 50 Hz LF 50 Hz L L O O C C K K CH1 CH2 INPUT INPUT MONO: IN[...]

  • Page 16

    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 the correct polarity. The upper Speakon jack [...]

  • Page 17

    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 mm 8 4 2 Ω Ω Ω U TPUT 1 2 CH 2 P[...]

  • Page 18

    18 OPERA TION 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 muting, indicated by the CLIP LEDs glowing bright red[...]

  • Page 19

    19 OPERA TION Fan cooling The fan speed varies automatically to maintain safe internal temperatures. Keep the front and rear vents clear to allow full air flow . Hot air exhausts out the front of the amp so it does not heat the interior of the rack. Make sure that plenty of cool air can enter the rack, especially if there are other units which exha[...]

  • Page 20

    20 APPLICA TIONS APPLICA TIONS ANWENDUNGS- BEISPIELE APLICACIONES PLX amp (stereo mode) Mixing board Console de mixage Mischpult Mezclador 2-way monitor Enceinte monitor deux voies Zweiweg-Aktivmonitorsystem Bocina monitor dos vías Monitor mix Line-level audio Audio niveau ligne Linepegel-Audio Audio de nivel de linéa 1 2 Active crossover Sépara[...]

  • Page 21

    21 Instrument amplification Preamp PLX amp (parallel mode) Instrument input Entrée de l’instrument Instrumentseingang Entrada del instrumento Line-level output Sortie audio niveau ligne Linepegel-Audio-Ausgang Salida de nivel de linéa Ch. 1 input Entrée Canal 1 Eingang Kanal 1 Entrada Canal 1 Effects ≥Ω 2 ≥Ω 2 2 cabinets Preamp Effects[...]

  • Page 22

    22 TROUBLESHOOTING Problem: no sound ➤ ➤ ➤ ➤ ➤ INDICA TION: POWER INDICA TOR 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 mono mode may cause the [...]

  • Page 23

    23 No sound (continued) TROUBLESHOOTING SIGNAL POWER -20dB -IOdB CLIP 1 C H A N N E L 2 SIGNAL POWER -20dB -IOdB CLIP 1 C H A N N E L 2 Pas de son (suite) ➤ ➤ ➤ ➤ ➤ INDICATION: DEL DE SIGNAL FONCTIONNENT NORMALEMENT • Si les DEL SIGNAL , -20dB et -10dB fonctionnent normalement, le problème se situe entre la sortie de l'amplificate[...]

  • Page 24

    24 ➤ ➤ ➤ ➤ ➤ INDICA TION: CLIP INDICA TOR NOT 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. TROUBLESHOOTING Problem: no chann[...]

  • Page 25

    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. • T o keep the normal noise floor low , operate the primary signal source at full level, without clipping, and avoid boosting the signal further betw[...]

  • Page 26

    26 INNER WORKINGS 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 smoothly and safely . So, what actually happens when you tur[...]

  • Page 27

    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 motion. The power devices are directly mounted to isola[...]

  • Page 28

    28 PLX 1202 PLX 1602 PLX 2402 PLX 3002 PLX 3402 OUTPUT POWER in watts 20 Hz–20 kHz @ 0.03% THD 8 Ω per channel 2 0 0 3 0 0 4 2 5 5 5 0 7 0 0 20 Hz–20 kHz @ 0.05% THD 4 Ω per channel 3 2 5 5 0 0 7 0 0 9 0 0 1100 EIA: 1 kHz @ 1% THD 8 Ω per channel 2 1 5 3 2 5 4 7 5 6 2 5 8 0 0 4 Ω per channel 3 7 5 5 5 0 8 2 5 1050 1250 2 Ω per channel[...]

  • Page 29

    29 TECHNISCHE DA TEN SPECIFICA TIONS SPÉCIFICA TIONS ESPECIFICACIONES PLX 1202 PLX 1602 PLX 2402 PLX 3002 PLX 3402 LOAD PROTECTION Turn-on/turn-off muting, DC-fault power supply shutdown, clip limiting OUTPUT CIRCUIT TYPE AB AB H H H AB: Class AB complementary linear output H: Class AB complementary linear output with Class H 2-step high efficienc[...]

  • Page 30

    30 WARRANTY INFORMA TION INFORMA TIONS DE GARANTIE GARANTIE- BEDINGUNGEN INFORMACIÓN DE GARANTÍA Disclaimer QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of the PLX amplifier . Product Warranty QSC guarantees the PLX to be free[...]

  • Page 31

    31 ADDRESS & TELEPHONE INFORMA TION ADRESSE POST ALE ET NUMÉROS DIRECCIÓN Y TELÉFONO ANSCHRIFT UND TELEFON- NUMMERN Mailing address / Adresse postale / Postanschrift / Dirección postal: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA T elephone Numbers / Numéros de téléphone / T elefonnummern / Números de[...]

  • Page 32

    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 T rademark Office. ©1998 & 1999 QSC Audio Products, Inc.[...]