The grandstand at Auckland’s North Harbour Stadium sports numerous Renkus-Heinz loudspeakers.New Zealand (April 30, 2008)–Audio Telex and Marshall Day Acoustics recently designed and installed a new sound system for the 12,000 seat grandstand at North Harbour Stadium in Auckland, New Zealand. The design was developed using EASE acoustic simulation software and based around Renkus-Heinz loudspeakers.
As the first major Renkus-Heinz stadium sound system in Australasia, its owners also wanted it to the best sounding stadium system in New Zealand. North Harbour Stadium Marketing Manager Chris Kemp said: “We don’t want to tell people we have a new sound system, we just want them to hear the difference when they walk into the stadium”.
North Harbour Stadium holds 25,000 people, hosts concerts and is home to Rugby Football’s North Harbour team; the grandstand complex also doubles as a conference and function venue, so the three-tiered, half-shell-roofed grandstand posed some challenges to the audio designers. Renkus-Heinz CDT520s were chosen as the mid-high speaker, while low frequency cabinets and components, meanwhile, were weather treated and fibreglass coated by Renkus-Heinz and, like the CDT520s, are rated to IP559. Five clusters each contain a CELK15-2KW dual 15″ low frequency cabinet and three CDT520 10″/2″ mid- high horn speakers.
Bartons Sound of Auckland supplied and installed the system: the company had previously been involved in the on-field PA which had also included Renkus-Heinz speakers. Three Lab.Gruppen C48-4 power amplifiers and two C68-4s provide over 20,000 watts of amplification both to the Renkus-Heinz loudspeakers and the under-balcony fill loudspeakers. The four channel amplifiers were zoned to allow the clusters’ different sections to be adjusted during commissioning.
The entire system is controlled by a MediaMatrix Nion n3 DSP audio processor allowing specific tuning of individual loudspeakers, crossover points and particular voicing for the Renkus-Heinz clusters and balcony fill. A MediaMatrix CAB provides a CobraNet link between the NION and the Lab.Gruppen amplifiers.
On hearing the system for the first time during commissioning, Thomas Kelly from Audio Telex commented: “After a fair amount of tweaking in EASE to find the best combination of speaker models and positions the end result speaks for itself and the system sounds spectacular. Intelligibility for commentary is fantastic and I think we were all pleasantly surprised at just how huge the system sounded with music as well.”