System Design for Live Sound
Proposal of a Sound System
AUD407 Advanced Audio System Design
Table of Contents Overview 3 Site Assessment 4 Environmental Analysis 5 System Design Requirements 5 The System 8 Figure 1: Line Array Configuration 8 Figure 2: Jsub Frequency Map 9 Figure 3: Line Array Analysis 10 Foldback 12 Figure 4: Foldback Speaker Placement 12 Mixer/Desk 13 Signal Flow 13 Sound Reinforcement Analysis 14 “Rock” Band 14 Choir 14 FOH 14 Amp 15 Foldback 15 Stage Box/Mixer 15 Overall Equipment List 16 Power 19 Figure 5: Power Distribution 19 Watts Per Person FOH (peak) 20 Conclusion 20 Bibliography 21 APPENDIX 22
Overview
The event in which this proposal is catered for is a ‘carols by candlelight’ evening. The intended audience is comprised of children, adults, seniors and all people in-between. It is to be held at a local sporting ground with audience attendance numbers in the region of 2000 people.
Site Assessment
Below is an aerial map of the proposed event.
One can see that this location works well. With easy accessibility to all necessary facilities and ample parking space, there are no glaring problems. The power generator will be located next to the back stage area. Lighting can easily be setup on each corner of the field. Lighting is already present in the adjacent buildings allowing for easy navigation to the field area. The only slight issue that may arise is from people traveling from parking area 2 to the field. To ensure nobody gets lost, signs will be put in place. Temporary floor tiling will be used in the FOH engineers tent and where necessary (GreatMats, 2010).
Environmental Analysis
* Surfaces: Grass, dirt paths. Bring your own seating and chairs. Rather informal. * Noise: Present from adjoining road. Location is away from suburban areas. Noise restrictions apply yet are rarely enforced in this region. * Weather: Dry and sometimes windy. Subject to change. * Rain:
AUD407 Advanced Audio System Design
Table of Contents Overview 3 Site Assessment 4 Environmental Analysis 5 System Design Requirements 5 The System 8 Figure 1: Line Array Configuration 8 Figure 2: Jsub Frequency Map 9 Figure 3: Line Array Analysis 10 Foldback 12 Figure 4: Foldback Speaker Placement 12 Mixer/Desk 13 Signal Flow 13 Sound Reinforcement Analysis 14 “Rock” Band 14 Choir 14 FOH 14 Amp 15 Foldback 15 Stage Box/Mixer 15 Overall Equipment List 16 Power 19 Figure 5: Power Distribution 19 Watts Per Person FOH (peak) 20 Conclusion 20 Bibliography 21 APPENDIX 22
Overview
The event in which this proposal is catered for is a ‘carols by candlelight’ evening. The intended audience is comprised of children, adults, seniors and all people in-between. It is to be held at a local sporting ground with audience attendance numbers in the region of 2000 people.
Site Assessment
Below is an aerial map of the proposed event.
One can see that this location works well. With easy accessibility to all necessary facilities and ample parking space, there are no glaring problems. The power generator will be located next to the back stage area. Lighting can easily be setup on each corner of the field. Lighting is already present in the adjacent buildings allowing for easy navigation to the field area. The only slight issue that may arise is from people traveling from parking area 2 to the field. To ensure nobody gets lost, signs will be put in place. Temporary floor tiling will be used in the FOH engineers tent and where necessary (GreatMats, 2010).
Environmental Analysis
* Surfaces: Grass, dirt paths. Bring your own seating and chairs. Rather informal. * Noise: Present from adjoining road. Location is away from suburban areas. Noise restrictions apply yet are rarely enforced in this region. * Weather: Dry and sometimes windy. Subject to change. * Rain:
Bibliography: Bartman Audio Production. (2006). Sound Systems - details & rates. Retrieved April 28, 2010, from Bartman Audio Production: http://www.bartmanaudio.com/concert_sound.html BS Sound;. (1998). Balanced vs Unbalanced, Passive vs Active & a third unrelated topic Why do Valves sound better? Retrieved April 28, 2010, from BS Sound, Technical Advice.: http://www.bssound.com.au/advice/bsadvice.htm Crown Audio. (2007). How Much Amplifier Power Do I Need? . Retrieved April 27, 2010, from Crown Audio: http://www.crownaudio.com/amp_htm/amp_info/how_much_power.htm D&B Audiotechnik. (2010). Array Caculators: ArrayCalc 5. Retrieved April 30, 2010, from D&B Audiotechnik: http://www.dbaudio.com/en/support/down/array/ D&B Audiotechnik. (2010). The J Series. D&B Audiotechnik. D&B Audiotechnik. (2010). The Q Series. D&B Audiotechnik. Digidesign. (2010). VENUE D-Show. Retrieved 2010, from Digidesign: http://www.avid.com/US/products/VENUE-D-Show/features GreatMats. (2010). Temporary Floor Tile. Retrieved 2010, from GreatMats: http://www.greatmats.com/products/temporary-floor-tile.php JBL. (2010). PRX512MI. Retrieved May 1, 2010, from JBL Professional : http://www.jblpro.com/catalog/general/Product.aspx?PId=284&MId=3 APPENDIX