Section

9

Signal Processing

12

 

9.1

Digital Signal Processor

12

 

9.2

Unpowered Loudspeakers

12

 

9.2.1

Single-Amplified Mode

12

 

9.2.2

Multi-Amplified Mode

13

 

9.3

Subwoofer Signal Processing

13

 

9.4

Unpowered Loudspeakers - Limiters

14

 

9.4.1

Limiters and Limiting

14

 

9.4.2

MX8750 Limiter Design

14

 

9.4.3

MX8750 Output Limiter Wizard

14

Section

9.5

Powered Loudspeakers

15

 

9.5.1

External Processing

15

 

9.5.2

Limiters

15

Section

10

Operating the Loudspeaker

15

 

10.1

Operating Limits

15

 

10.1.1

Operator Responsibility - Preventing Damage

15

 

10.1.2

Loudspeaker Limits - Preventing Damage

15

 

10.2

Acoustic Level Precautions

15

 

10.2.1

Operating Levels

16

 

10.3

Testing and Test Signals

16

 

10.4

Measurements

17

 

10.5

Operating Tips to Help Avoid Loudspeaker Damage

17

Section

11

Inspection and Maintenance

17

 

11.1

Periodic Inspection

18

 

11.1.1

Overall Physical Inspection

18

 

11.1.2

Rigging Inspection

18

 

11.2

Periodic Performance Testing

19

 

11.3

Periodic Maintenance

19

 

11.3.1

Periodic Acoustical Maintenance

19

 

11.3.2

Routine Maintenance

19

 

11.3.3

Cosmetic Maintenance

20

 

11.3.4

Long Term Maintenance

20

Section

12

Troubleshooting

21

 

12.1

Rigging Problems

21

 

12.2

Enclosure and Integral Hardware

21

 

12.3

Cosmetics

21

 

12.4

Isolating Sonic Problems

21

 

12.4.1

What Is Involved

21

 

12.4.2

Drivers

22

 

12.4.3

Input Panel and Wiring

22

 

12.4.4

Crossovers

22

 

12.4.5

Enclosure and Integral Hardware

22

 

12.5

Problem Symptoms

22

 

12.5.1

No Sound or Low Output

23

 

12.5.2

Distorted Sound

23

 

12.5.3

Partial Sound (Some Frequency Bands Missing)

23

 

12.5.4

Powered Loudspeaker Electronics

23

Section

13

Contacting EAW

24

 

13.1

Operating Questions

24

 

13.2

Service Information

24

 

13.3

Internal Information

24

Section

14

Warranty

25

xiv

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Image 14
EAW Loudspeaker's owner manual Xiv