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Technical manual - StepArray series

Technical manual - StepArray series

1.  Introduction

StepArray column speakers ensure perfect speech intelligibility and optimal 

acoustic comfort, even in noisy and reverberant venues. They are based on 

the DGRC (Digital & Geometric Radiation Control) principle patented by Active 

Audio.

Compared with a classic sound system in which each loudspeaker is controlled 

independently, the DGRC method makes it possible to decrease the number of 

channels to be controlled, thereby enhancing economic efficiency.

The StepArray range includes 6 models of column speakers, from 1m to 4m 

high.

SA100P

1m high

flat area, 21m

3 channels

8

Ω

 min.

SA180P

1.80m high

flat area, 40m

3 channels

8

Ω

 min.

SA180S

1.80m high

10° area, 29m

3 channels

8

Ω

 min.

SA250P

2.50m high

flat area, 45m

6 channels

4

Ω

 min.

SA250S

2.50m high

12° area,  36m

6 channels

4

Ω

 min.

SA400P

4m high

flat area, 90m

6 channels

8

Ω

 min.

2.  Installation of the columns

StepArray columns are mounted verticaly, usually on a wall, using the supplied 

brackets. Figure 1 illustrates the steps to follow for column mounting. See also 

figure 8 on page 13 for technical drawings of the brackets. 

Place

the 2 brackets

on the wall

using 8mm

diameter screws

x3

x3

1

Column height

+ 5mm

2

Ensure

verticality

3

Mount the column

using the supplied

nut and screw

4

Figure 1 : 

Column mounting on a wall (Important : to ensure vertically 

when mounting StepArray columns)

Summary of Contents for StepArray

Page 1: ...L a c o u s t i q u e a c t i v e Technical manual StepArray Digitally steerable column loudspeakers...

Page 2: ...3 Wiring amplifiers to columns 7 4 Test before powering up 8 5 NUT control software 8 6 Troubleshooting 9 7 Hardware specifications 10 7 1 NUT processor 10 7 2 MPA8200 amplifier 11 7 3 Columns charac...

Page 3: ...lumn speakers from 1m to 4m high SA100P 1m high flat area 21m 3 channels 8 min SA180P 1 80m high flat area 40m 3 channels 8 min SA180S 1 80m high 10 area 29m 3 channels 8 min SA250P 2 50m high flat ar...

Page 4: ...escribed in figure 3 Figure 3 MPA8200 amplifier set up 3 3 Wiring amplifiers to columns Wiring amplifiers to columns is straightforward simply connect each channel of the MPA8200 amplifier to the corr...

Page 5: ...iltering and directivity parameters of StepArray columns it is available as free download on Active Audio s web site http www activeaudio fr en public address sound reinforcement digital si gnal proce...

Page 6: ...imensions 480 x 44 x 251mm Rack 19 1U Color Black Weight 3 5 kg 7 2 MPA8200 amplifier Audio data Operating modes 8 channels independent 4 channels independent bridged Power 8 x 200W under 8 8 x 300W u...

Page 7: ...nical characteristics of StepArray columns Figure 6 StepArray column dimensions Model Dimensions L x W x D mm Weight net ship ping Cable SA100P 1024 x 124 x 131 9kg 12kg 4G SA180P 1840 x 124 x 135 17k...

Page 8: ...on position 200Hz 90 60 30 0 330 300 270 20dB 10dB 500Hz 1kHz 2kHz 4kHz 8kHz Figure 10 Horizontal directivity column SA250P 8 2 SA100P acoustical data1 20m 10m 0m 10m h 2 55m 10dB 5dB 0dB 5dB 10dB 15d...

Page 9: ...00Hz 1000Hz 2000Hz 4000Hz 8000Hz Figure 19 Sound level by octave in the axis of the listening plane in front of the column with respect to the distance from the column 8 3 SA180P acoustical data1 20m...

Page 10: ...00Hz Figure 24 Sound level by octave in the axis of the listening plane in front of the column with respect to the distance from the column 8 5 SA400P acoustical data1 20m 10m 0m 40m 30m 10m 50m 60m 7...

Page 11: ...EN60065 Established on the 6th of January 2016 by R gis CAZIN CEO 8 7 SA250S acoustical data1 0m 10m 20m 10m SA250S h 3 85m 10dB 5dB 0dB 5dB 10dB 15dB 20dB SA250S vertical directivity sound level for...

Page 12: ...www activeaudio fr info activeaudio fr Active Audio 8 Rue Johannes Gutenberg 44340 Bouguenais France Phone 33 0 2 404 666 64 Contact...

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