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QSC DPA4.2 User Manual

Other manuals for DPA4.2: User Manual
Manual is about: DPA Amplifiers

Summary of DPA4.2

  • Page 1

    Dpa amplifiers user manual dpa4.2 — 4 channel, 1600 w amplifi er dpa4.3 — 4 channel, 2500 w amplifi er dpa4.5 — 4 channel, 5000 w amplifi er td-000434-00-a *td-000434-00*.

  • Page 2: Explanation of Symbols

    2 td-000434-00-a explanation of symbols the term “warning!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death. The term “caution!” indicates instructions regarding possible damage to physical equipment. If these instructio...

  • Page 3: Fcc Statement

    3 td-000434-00-a fcc statement for dpa4.3 and dpa4.5 note: this equipment has been tested and found to comply with the limits for a class a digital device, pursuant to part 15 of the fcc rules. These limits are designed to provide reasonable protection against harmful interference when the equipment...

  • Page 4

    4 td-000434-00-a warranty (usa only; other countries, see your dealer or distributor) qsc audio products 3 year limited warranty qsc audio products, llc (”qsc”) guarantees its products to be free from defective material and/or workmanship and will replace defective parts and repair malfunctioning pr...

  • Page 5: Introduction

    5 td-000434-00-a introduction built for system integrators, the dpa series amplifi ers provide multi-channel amplifi cation with built-in dsp and enough power to drive wide varieties of speaker systems with optimal energy effi ciency. The dpa series consists of three light-weight, 2ru, four-channel ...

  • Page 6: Features

    6 td-000434-00-a features amplifi er front panel — figure 1 — 1 2 3 4 5 6 7 8 12 13 14 15 16 9 10 11 1. Output channels are labeled a, b, c, and d 2. Output channel mute buttons and leds (red) 3. Output channel limiter leds (red) 4. Output channel -10 db below maximum amplifi er output (blue) 5. Out...

  • Page 7: Amplifi Er Control

    7 td-000434-00-a amplifi er control — figure 3 — output home master control -10 -20 lim sel mute a 1 sel mute b 2 sel mute c 3 sel mute d 4 clip sig input enter exit gain off mode • rear power switch is off, the amplifi er is not operable. The power switch is the ac mains disconnect. • the power but...

  • Page 8: Dpa Amplifi Er Signal Flow

    8 td-000434-00-a dpa amplifi er signal flow screen types — figure 5 — informational informational screens, like the home screen, are designed to provide you with a good amount of useful information at a glance. F1: a b c d full +1.5 db a - fr +1.5 db c - fr full +1.5 db d - fr full 121 v 7.2 a ac vo...

  • Page 9: Menu Tree

    9 td-000434-00-a menu tree presets preset wizard preset recall preset save inputs input sensitivity input gain outputs mixer w/noise & tone save speaker load speaker limiter delay peq crossover spkr processing utilities display status amp id password lockout gpi gpo about presets the dpa amplifi ers...

  • Page 10

    10 td-000434-00-a depending on the depth of your rack, the rear rack ear support kit (fg-000031-00) may be required for rack mounting. Refer to http://qsc.Com/ products/ under accessories for details. Caution!: be sure that nothing is blocking the front or rear ventilation openings, and that each si...

  • Page 11: Inputs

    11 td-000434-00-a inputs connect the audio inputs — figure 10 — heartbeat gpo gpi usb routable inputs 2 1 4 3 — figure 11 — unbalanced — figure 12 — balanced there are four three-pin euro-style connectors labeled 1 through 4 providing the audio inputs on the dpa amplifi ers. A single input can be mi...

  • Page 12: Outputs

    12 td-000434-00-a outputs the dpa amplifi ers have four confi gurable outputs. You can set the power, combine outputs (bridged and parallel), and adjust the dsp for each output. When the output confi guration of the amplifi er changes, the output terminals, controlled by relays, change accordingly. ...

  • Page 13

    13 td-000434-00-a one-channel confi gurations — figure 15 — f9: abcd f9: abcd abcd parallel m abcd the following are electrically the same point t1+, t3+, t5+, and t7+ t2-, t4-, t6-, and t8- — figure 16 — f8: ab+cd f8: ab+cd ab parallel bridged with cd parallel the following are electrically the sam...

  • Page 14

    14 td-000434-00-a — figure 19 — f4: ab cd f4: ab cd the following are electrically the same point t1+ and t3+ t5+ and t7+ t2- and t4- t6- and t8- ab parallel cd parallel ab cd m m — figure 20 — f7: abc d f7: abc d abc d m m the following are electrically the same point t1+, t3+, and t5+ t2-, t4-, an...

  • Page 15: Ac Power On

    15 td-000434-00-a four-channel confi guration — figure 23 — f1: a b c d f1: a b c d a single b single c single d single m m a b m c m d connect the loudspeakers warning!: when the ac power is on, there is a potential of having dangerous voltage at the output terminals on the rear of the amplifi er. ...

  • Page 16: Preset Wizard

    16 td-000434-00-a dpa 4.5 — total power: 5000w 8 load 4 load 2 load confi guration a b c d a b c d a b c d 4 ch (a b c d) 1150 1150 1150 1150 1250 1250 1250 1250 625 625 625 625 3 ch (ab c d) 1200 1150 1150 2250 1250 1250 2100 625 625 3 ch (a+b c d) 2250 1150 1150 1150 1250 1250 625 625 625 2 ch ...

  • Page 17

    17 td-000434-00-a step 2 — select output channel for speaker assignment outputs speakers save assign assign assign output: a d c b imped: 8.0 8.0 8.0 8.0 spkr: - - - - - - - - - - - - - - - - assign power: 625 625 625 625 when you are fi nished setting the impedance and power for each output, contin...

  • Page 18

    18 td-000434-00-a create new preset from an existing preset to create a preset from an existing preset, recall the preset with the desired output confi guration, modify the input parameters, output parameters, then save the preset. In addition, you can save the preset as you are going thru the creat...

  • Page 19

    19 td-000434-00-a home > inputs > input gain (enter) step 2 — set input gain f1: a b c d input 1 input sens +4 dbu gain (db) 0.0 scroll to select (-100 thru 20 db) ` to confi rm selection, press ` to move to the next input, press ` repeat this procedure for remaining input channels enter sel set up ...

  • Page 20

    20 td-000434-00-a home > outputs > mixer (enter) step 2 — test - pink noise and tone generator f1: a b c d output a source tone noise off tone on freq 1.0k test scroll to test press ` on source, press ` select tone or noise press ` scroll to noise press ` adjust noise to desired level press ` scroll...

  • Page 21

    21 td-000434-00-a loudspeaker processing the speaker processing section allows you to make adjustments to the crossover, eq, delay, limiter, and qsc array details for each output channel. In addition, you can load a pre-defi ned loudspeaker then make any adjustments needed, and save the changes as a...

  • Page 22

    22 td-000434-00-a crossover home > outputs > spkr proc > crossover > high-pass (or low-pass) (enter note: if you select a qsc loudspeaker, you will see that the high-pass, or low-pass fi lters are locked. Qsc has given these loudspeakers specifi c voicings tailored for that loudspeaker that should n...

  • Page 23

    23 td-000434-00-a delay home > outputs > spkr proc > delay (enter) distance measurements are based on the speed of sound being 340 meters/second, or 2.94 milliseconds/meter. Step 1 — set the output delay time f1: a b c d outputs > spkr proc > delay output a delay state bypass time (ms) 10.0 distance...

  • Page 24

    24 td-000434-00-a home > outputs > spkr proc > limiter > auto note: spkrpwr maximum output depends on the amplifi er and the output confi guration you select. The maximum for separate channels is 1250 w, a single combined channel (abcd or ab+cd) can be up to 5000 w depending on the amplifi er. Step ...

  • Page 25

    25 td-000434-00-a save a speaker home > outputs > spkr proc > save spkr (enter) when you save a speaker profi le, you are saving all of the output settings currently active for the channel. The new profi le you save does not need to be loaded, it is already active. Step 1 — save loudspeaker about sp...

  • Page 26

    26 td-000434-00-a save the preset home > presets > preset save> save as (enter) after modifying the inputs and outputs for all channels, save the current settings as one of the 50 user-defi ned presets (u1: thru u50:). Each of the user presets, by default, is the same as factory preset f1: a b c d, ...

  • Page 27: Utilities

    27 td-000434-00-a step 1 — overwrite preset press enter to save preset u1: a b c d save to save, press ` to exit without saving, press ` to confi rm save, press ` enter exit enter utilities home > utilities > status (enter) the utilities section provides the following amplifi er information and func...

  • Page 28

    28 td-000434-00-a home > utilities > display (enter) step 1 — display utility - display confirm display timeout never timeout funciton blackout display timeout never 10, 30 sec 1, 3, 5, 10, 15 min the home, enter, exit, gain, and the master control exit demo or blackout mode. The power, mute and sel...

  • Page 29

    29 td-000434-00-a home > utilities > gpi > enter note: if you enable the gpi with nothing connected to the input pin, the gpi performs the selected gpi function. In order to undo the result, you must manually reset whatever the gpi function was, connect a switch to the input as described below, or y...

  • Page 30

    30 td-000434-00-a step 2 — setup the gpo (output) feature utility - gpio - output confirm gp ouput disable all faults gpo function low gpo flag impedance boundaries 0.1 low 500.0 high select enable or disable press ` scroll to gpo function press ` select desired function press ` scroll to gpo flag p...

  • Page 31

    31 td-000434-00-a.

  • Page 32: Supported Loudspeakers

    32 td-000434-00-a supported loudspeakers cinema screen channel systems sc-2150 (2150-lf + 2150-hf) sc-413c (lf-4115 + mh-1075c) sc-323c (lf-3215 + mh-1075c) sc-423c (lf-4215 + mh-1075c) sc-423c-8 (lf-4215-8 + mh-1075c) sc-423c-f (lf-4215f + mh-1075c) sc-443c (2 x lf-4215 + mh-1075c) sc-414 (lf-4115 ...

  • Page 33: Specifi Cations

    33 td-000434-00-a specifi cations dpa4.2 dpa4.3 dpa4.5 4 ch. Continuous 1 8 4 2 400 watts 400 watts 325 watts 625 watts 625 watts 625 watts 1150 watts 1250 watts 625 watts 2 ch. Continuous 1 8 4 2 800 watts 800 watts 650 watts 1250 watts 1200 watts 1200 watts 2250 watts 2250 watts 2100 watts 1 ch. C...

  • Page 34

    34 td-000434-00-a heat loss charts heat losses are the thermal emissions from an amplifi er while it is operating. It comes from dissipated waste power—i.E., real ac power in minus audio power out. Measurements are provided for various loads at idle, 1/8 of average full power, 1/3 of average full po...

  • Page 35

    Mailing address: qsc audio products, llc 1675 macarthur boulevard costa mesa, ca 92626-1468 usa telephone numbers: main number: (714) 754-6175 sales & marketing: (714) 957-7100 or toll free (usa only) (800) 854-4079 customer service: (714) 957-7150 or toll free (usa only) (800) 772-2834 facsimile nu...