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- DPA4.2
- User Manual
QSC DPA4.2 User Manual
Summary of DPA4.2
Page 1
Dpa amplifiers user manual dpa4.2 — 4 channel, 2000 w amplifi er dpa4.3 — 4 channel, 4000 w amplifi er dpa4.5 — 4 channel, 8000 w amplifi er td-000434-01 -b *td-000434-01*.
Page 2: Explanation of Symbols
2 td-000434 -01 -b 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 instruct...
Page 3: Fcc Statement
3 td-000434 -01 -b maintenance and repair warning!: advanced technology, e.G., the use of modern materials and powerful electronics, requires specially adapted maintenance and repair methods. To avoid a danger of subsequent damage to the apparatus, injuries to persons and/or the creation of addition...
Page 4: Introduction
4 td-000434 -01 -b 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-channe...
Page 5: Features
5 td-000434 -01 -b 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. O...
Page 6: Installation
6 td-000434 -01 -b installation the following steps are written in the recommended installation order. Rack-mount the amplifi er the dpa series amplifi ers are designed to be mounted in a standard rack-mount unit. The amplifi ers are 2ru high, the dpa4.3 and dpa4.5 are 381 mm (15 in) deep, the dpa4....
Page 7: Inputs
7 td-000434 -01 -b inputs connect the audio inputs — figure 4 — balanced — figure 5 — unbalanced — figure 6 — heartbeat gpo gpi usb routable inputs 2 1 4 3 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 mixe...
Page 8: Outputs
8 td-000434 -01 -b 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 9
9 td-000434 -01 -b the following is a list of confi gurations for 1, 2, 3, and 4-channel outputs. This is not an exhaustive list, but is intended to give you an idea of what is available and how the outputs would be wired. One-channel confi gurations — figure 9 — f9: abcd f9: abcd m abcd abcd parall...
Page 10
10 td-000434 -01 -b — figure 13 — f4: ab cd f4: ab cd ab cd m m ab parallel cd parallel — figure 14 — f7: abc d f7: abc d abc d m m abc parallel d single three-channel confi gurations — figure 15 — f3: a+b c d f3: a+b c d a+b c d m m m a+b bridged c single d single — figure 16 — f2: ab c d f2: ab c ...
Page 11
11 td-000434 -01 -b four-channel confi guration — figure 17 — f1: a b c d f1: a b c d m m a b m c m d a single b single c single d single 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 12: Amplifi Er Control
12 td-000434 -01 -b amplifi er control — figure 19 — 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 (power button) off mode • rear power switch is off, the amplifi er is not operable. The power switch is the ac mains disconne...
Page 13: Dpa Amplifi Er Signal Flow
13 td-000434 -01 -b dpa amplifi er signal flow — figure 20 — input settings output processing amp confi g. Sensitivity switch a/d meter gain mixer mute high-pass filter gain / polarity low-pass filter 5-band peq delay rms / peak limiter d / a a meter sensitivity switch a/d meter gain mixer mute high...
Page 14: Screen Types
14 td-000434 -01 -b screen types — figure 21 — 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 voltage: ac current: home...
Page 15: Preset Wizard
15 td-000434 -01 -b preset wizard the preset wizard simplifi es the preset creation process, and allows you to create a preset from the ground up. The preset wizard provides a mechanism for you to select the desired power and load. Based on these selections, the best amplifi er confi guration is sel...
Page 16
16 td-000434 -01 -b step 4 — select speaker type for channel outputs speakers save output: a assign full range speaker: default band: qsc ap-5152 filter: to edit speaker, press scroll to select a speaker model to confi rm, press scroll to select (band, filter) to edit, press turn to adjust parameter...
Page 17: Modify Presets
17 td-000434 -01 -b modify presets to modify a 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 creation process. Recall a preset a preset includes th...
Page 18
18 td-000434 -01 -b set up the inputs note: changes made to input levels are in real time. Home > inputs > sens (enter) step 1 — select input sensitivity f1: a b c d input 1 input sens 3.0 vrms gain (db) 0.0 const sens after confi rming the sensitivity setting, you can scroll to gain and adjust it, ...
Page 19
19 td-000434 -01 -b home > outputs > mixer (enter) step 1 — set mixer gains f1: a b c d output a mixer input 1 4.2 input 2 -100.0 input 3 -49.9 input 4 -100.0 scroll to the input you wish to adjust to edit, press adjust the gain for the selected input to confi rm, press repeat for the remaining inpu...
Page 20
20 td-000434 -01 -b step 1 — load speaker about speakers load about this function will load a speaker from the database to this output channel; it loads all of the speaker tuning parameters into the outprocessing. Next this function will load a speaker from the database to this output channel; it lo...
Page 21
21 td-000434 -01 -b home > outputs > spkr proc > crossover > gain/pol > gain (enter) step 2 — set the crossover gain and polarity gain -5.5 db gn/pol f1: a b c d polarity pol + output a 20 db -60 db scroll to select (gain or polarity) to edit, press turn to adjust parameter to confi rm, press to exi...
Page 22
22 td-000434 -01 -b home > outputs > spkr proc > limiter step 1 — gain reduction f1: a b c d outputs limiter press enter to edit output a limiter params gain reduction 0.0 db delay array xo eq dl lm ac lm the gain reduction currently being applied to the selected output channel. To edit the limiter ...
Page 23
23 td-000434 -01 -b set advanced mode parameters note: if you select a qsc loudspeaker, you will see that the limiter is locked. Qsc has given these loudspeakers specifi c limiter settings tailored for that loudspeaker that should not be changed. If there is a limiter applied in these voicings, you ...
Page 24
24 td-000434 -01 -b step 2 — save a loudspeaker with custom load profi le about speakers save output data: ab + cd 16.0 nominal imped: 1000 band: 2-way lf power rating: enter speaker info nominal impedance and power rating are the nominal settings for a single loudspeaker of this type. Scroll to sel...
Page 25
25 td-000434 -01 -b save a preset 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, so when you save the preset you are "overwriti...
Page 26: Utilities
26 td-000434 -01 -b save use this save procedure when you are saving the preset by overwriting the currently active user preset. After you use the save as feature to save the preset you are working on, it then becomes the currently active preset, and you can use the save feature to save as you work ...
Page 27
27 td-000434 -01 -b setup the display 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...
Page 28
28 td-000434 -01 -b gpio connections 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 de...
Page 29
29 td-000434 -01 -b 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 press...
Page 30: Supported Loudspeakers
30 td-000434 -01 -b supported loudspeakers cinema screen channel systems sc-1120 sc-1150 sc-2150 (2150-lf + 2150-hf) sc-312xc (lf-3115 + hf-75cx1) sc-322c (lf-3215 + hf-75c) sc-322xc (lf-3215 + hf-75cx2) sc-323c (lf-3215 + mh-1075c) sc-324 (lf-4115 + mhv-1090) sc-412c (lf-4115 + hf-75c) sc-413c (lf-...
Page 31: Specifi Cations
31 td-000434 -01 -b specifi cations dpa4.2 dpa4.3 dpa4.5 channel confi guration peak 1 continuous 2 peak 1 continuous 2 peak 1 continuous 2 4 independent channels a, b, c, d 8 4 2 500 w 700 w 625 w 400 w 400 w 325 w 900 w 1400 w 1200 w 625 w 625 w 625 w 1200 w 2000 w 1600 w 1150 w 1250 w 625 w 2 cha...
Page 32: Heat Loss Charts
32 td-000434 -01 -b dimensions (hwd) 3.5” x 19” x 12” (89 x 482 x 305 mm) 3.5” x 19” x 16” (89 x 482 x 406 mm) 3.5” x 19” x 16” (89 x 482 mm x 406 mm) weight, net / shipping 18.5 lb (8.4 kg) / 22 lb (10.0 kg) 21.0 lb (9.5 kg) / 25 lb (11.3 kg) 22.0 lb (10.0 kg) / 26 lb (11.8 kg) 1 peak power – 20 ms...
Page 33
Mailing address: qsc, 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 numbers: sales & ...