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QSC PLX 1202 User Manual

Manual is about: PLX Series Amplifiers

Summary of PLX 1202

  • Page 1

    1 ▼ plx 1202 ▼ plx 1602 ▼ plx 2402 ▼ plx 3002 ▼ plx 3402 p l x ™ s e r i e s a m p l i f i e r s 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 gleichs...

  • Page 3

    3 sound reinforcement ........................................... 20 sonorisation beschallung sonido en vivo instrument amplification ..................................... 21 amplification d'instrument instrument-verstärkung amplificación de instrumento troubleshooting .................................

  • 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 requi...

  • Page 5

    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

    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. Con...

  • Page 7: 4 5

    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

    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

    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

    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 positions 4, ...

  • Page 11

    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, gain c...

  • Page 12

    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 differences among stereo, parallel input, and bridge mono modes? Stereo mode this is the "normal" way of using the amplifier, in which e...

  • Page 13

    13 ch. 1 ch. 1 ch. 2 ch. 2 ch. 1 input ch. 2 input bridged mono features & setup see the additional bridge mono mode warnings on page 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...

  • Page 14

    14 a u d i o p o w e r a m p l i f i e r p l 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 p arallel -20db -iodb clip 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 13.25" 336.6 mm 17.30" 440 mm all four screws: toutes les qu...

  • Page 15

    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

    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 cor...

  • 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 ...

  • Page 18

    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 muting,...

  • Page 19

    19 o p e r a t i o n 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 ...

  • Page 20

    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 monitor enceinte monitor deux voies zweiweg-aktivmonitorsystem bocina monitor dos vías monitor mix line-le...

  • 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 effect...

  • Page 22

    22 troubleshooting problem: no sound ➤ ➤ ➤ ➤ ➤ indication: power indicator 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 bridge...

  • Page 23

    23 no sound (continued) troubleshooting signal p ower -20db -iodb clip 1 c h a n n e l 2 signal p ower -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...

  • Page 24

    24 ➤ ➤ ➤ ➤ ➤ indication: clip indicator 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. ...

  • 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. • to keep the normal noise floor low, operate the primary signal source at full level, without clipping...

  • 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. ...

  • 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...

  • 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 200 300 425 550 700 20 hz–20 khz @ 0.05% thd 4 Ω per channel 325 500 700 900 1100 eia: 1 khz @ 1% thd 8 Ω per channel 215 325 475 625 800 4 Ω per channel 375 550 825 1050 1250 2 Ω per chann...

  • Page 29

    29 technische daten s p e c i f i c at i o n s s p É c i f i c at i o n s 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: c...

  • Page 30

    30 w a r r a n t y i n f o r m a t i o n informations de g a r a n t i e g a r a n t i e - b e d i n g u n g e n informaciÓn de g a r a n t Í a 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 in...

  • Page 31

    31 a d d r e s s & t e l e p h o n e i n f o r m a t i o n a d r e s s e p o s t a l e e t n u m É r o s d i r e c c i Ó n y t e l É f o n o a n s c h r i f t u n d t e l e f o n - n u m m e r n mailing address / adresse postale / postanschrift / dirección postal: qsc audio products, inc. 1675 macar...

  • 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 trademark office. ©1998 & 1999 qsc audio products, inc..