128 VENUE
amplifier rooms. Basically all the infrastructure items, so that every design put forward by a manufacturer would fit into the venue without adding extra cabling or steel work. We received six designs that met the criteria.”
At that point, Scott sat down with each manufacturer to fine tune the designs. Ultimately this process put a couple of the companies out of the running due to circuit count, weight limit or power and in the end three were shortlisted for a shootout at the venue. Scott installed two clusters of each system and listened - along with Simon and CEO of the stadium, Daryl Kerry - to different musical content over two days, whilst taking measurements and discussed the support structure with each distributor. Simon commented: “We also invited maintenance and operational crew along [to the shootout]. Initially Scott would listen but not comment, allowing us to form our own opinions. I would suggest my perceived differences, he would explain in technical terms why that might be so.”
After a thorough design and bid process the stadium management were left with just two options, and as Scott was confident of both he left it up to them to decide. Simon and Daryl opted for a d&b audiotechnik system based around the company’s medium format line array system, the Vi-Series - a variant of the V-Series - with a full complement of Vi-SUBs. The system also features Ti and Qi-Series elements in subsidiary roles. The pair were won over by the d&b au- diotechnik system because of its compact size, minimising the visual impact yet there was no compromise on sound quality. The d&b audiotechnik equipment was supplied by Australian dis- tributor National Audio Systems and installed by The P.A. People, a well-known Australian systems integrator. Scott said: “Historical- ly, installers have forged relationships with particular loudspeaker brands, but it doesn’t follow that the best installer for your project will necessarily have a relationship with the best manufacturer for your project. By separating manufacturer from installer in the bid process we got the best installer and the best equipment.” The configuration is fairly straightforward as the venue is symmet- rical on both east - west axis and the north - south axis apart from the northern end where there is an additional balcony that required further coverage. The venue is divided into quadrants; imagine slicing the venue through the east-west centreline and the north-south
www.mondodr.com
centreline. Each quadrant has six main arrays, four on the main (east or west) side and two in the end zone (north or south). The arrays are numbered within each quadrant from the east-west centreline so standing on the western centreline the left array is NW1 and the right array is SW1. All arrays are identical within their number index and all arrays excluding #4 follow the same dipole sub-bass arrangement where the subs in each array are horizontally separated by 2.5-metres.
Stefan Goertz from d&b audiotechnik who developed the initial d&b proposal explained the set-up further: “The pure dipole arrangement of the two Vi-SUB positions extends the Vi-TOP arrays constant pattern control towards lower frequencies via the crossover range between TOPs and SUBs, extending it down to the range exclusively delivered by the Vi-SUBs themselves,” explained Stefan. “So in mod- elling the time alignment between SUBs and TOP cabinets we have an additional electrical parameter to fine adjust the overall low end dispersion. Thus we achieve a great advantage, extending the control pattern of the Vi loudspeakers far down below 200Hz. The benefit is a big reduction in unwanted low end energy in the troublesome areas of the stadium, thus over all a much cleaner sound across a broader listening bandwidth. This is uniquely possible using passive cardioid subwoofers by design to create such an array set-up.” All #1 arrays comprise 12 d&b audiotechnik Vi8 line array cabinets with two vertical pairs of d&b audiotechnik Vi-SUB subwoofers and all #2 arrays are the same. The #3 arrays are made up of 10 d&b audiotechnik Vi8 line array cabinets with the same d&b audiotechnik Vi-SUBs complement. Both #5 and #6 in the south consist of eight d&b audiotechnik Vi-TOPs and a pair of subwoofers, whilst the northern end #5 and #6 each have 10 d&b audiotechnik Vi-TOPs and a pair of subwoofers. The #4 is a gap-filler consisting of a verti- cal pair of d&b audiotechnik Qi7 loudspeakers and a line of six d&b audiotechnik Ti10L loudspeakers.
“The corners around the LED screen positions are problematic, ar- rays three, four and five straddle each corner, three and five comprise very long arrays providing coverage down to the front rows at the side and end. Array four is required to fill what is effectively a triangular section on the corner with its point touching the front row seats right where three and five meet. No loudspeaker projects such a pattern
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172