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Wood & Grieve Consulting Engineers were recently tasked
with specifying audio equipment for Qantas headquarters.
To establish the acoustics of the space and design the sound
system layout, a 3D EASE model was built by Wood & Grieve.
Subsequent to reviewing many speaker solutions, Bosch
Communications were elected as the company to supply the
optimal sound solution.
Qantas headquarters is an award-winning campus hub,
accommodating thousands of Qantas staff under its long,
interconnecting roof. Along the internal street of the hub, 16
Bosch LS1 Hemi Directional loudspeakers were installed.
The loudspeakers balance directly above the street lights and
have a complementary UFO design, adding another visually
stunning element to the space. Not only a visual pleaser,
the LS1s direct sound downward hemispherically instead of
dispersing it around in unwanted directions which was ideal
in the Qantas hub as it is a highly reflective environment.
Olivier Gaussen, National Acoustics Coordinator from Wood
& Grieve Engineers explained, “The Qantas hub is a very
complex acoustic environment as it includes large amounts
Case Study Qantas Headquarters, Sydney, Australia
Sky-high sound at QANTAS HQ
of reflective surfaces such as glass and terrazzo floor, and
it is located underneath the secondary runway of Sydney
Airport.” Wood & Grieve tamed many of these acoustic quirks
within the space by adding various absorption materials
in strategic locations. The LS1s also have high speech
intelligibility perfect for paging and emergency calls, as well
as high sound pressure level with very even coverage which
is extremely suitable for enclosed high-ceiling areas similar to
the Qantas hub.
The head-end equipment consisted of an Electro-Voice
NetMax N8000 DSP for all background music routing, in
conjunction to a Dynacord Promatrix 8000 paging system.
The equipment works collaboratively to allow staff to page to
any of the 8 different acoustic zones within the hub, as well
as providing pleasing background music.
Further, Wood & Grieve designed a large video screen to
be fitted within the hub, and determined that the Dynacord
TS400 Vertical Arrays were the most suitable speakers for the
application.
The TS400s are situated to the left and right of the big screen.
The 2.5 way design uses spaced and filtered drivers as array
elements which deliver very even and smooth coverage
throughout the challenging acoustic space.
In the centre of the bottom of the screen, two Electro-Voice
SB122 compact 12” subwoofers were installed for added
punch. These subs are incredibly small, yet extremely
powerful, packing 400-watt continuous power handling
(1600-watt peak) into a 15 kg package. The sound system
is completely invisible to the public, as designed by the
architect.
One of the many components of the Qantas hub is an outside
barbeque space designed for staff and patrons. Within this
space, six Electro-Voice ZX1i weatherized loudspeakers were
fitted, which deliver smooth, full range sound performance
with exceptional reliability, and extend the BGM and paging
capabilities.
Trevan Johns & Associates were the winning systems
integrator who did an exceptional job. Despite a particularly
short timeline, all equipment was successfully installed prior
to the hub’s formal opening. EV NetMax N8000 DSP and Dynacord Promatrix 8000 paging system.
The invisible Dynacord TS400s and Electro-Voice SB122s surrounding the hub’s Big Screen.
Consultant: Wood & Grieve Engineers
Level 6, Building B, 207 Pacific Highway
St Leonards NSW Australia 2065
Ph: +61 2 8484 7000
www.wge.com.au
Systems Integrator:Trevan Johns & Associates
Unit 7, 14 Abbott Rd
Seven Hills NSW Australia 2147
Ph: +61 2 9838 4622
www.tjacom.com.au
End User: Qantas
www.qantas.com.au
Ph: +61 2 9691 3636
Supplier: Bosch Communications Systems
Suite 1, Level 2, 21 Solent Circuit,
Baulkham Hills, NSW 2153
Ph: 1300 0 BOSCH (26724)
www.boschcommunications.com.au
Bryan Davidson from Bosch Communications was asked to
commission the system and do some tuning, which he states,
“Was quite a pleasing experience thanks to Wood & Grieve
who had all their homework done in making sure that the
space had a very low reverberation time, thereby allowing us
to achieve a high STI.”
“After the commissioning was completed by the acoustical
consultants, the dynamics, clarity and intelligibility from the
sound system was astounding,” added Trevan Johns, owner
of Trevan Johns & Associates.
Mr. Gaussen from Wood & Grieve Engineers concluded,
“Qantas Airways stakeholders and executives were all very
impressed by the quality and uniformity of the sound across
the hub. The design was a real success as reverberation time
and speech intelligibility performance requirements were met
in a very complex acoustic environment.”
Equipment:16 x Bosch LS1-OC100E-1 Hemi-Directional Loudspeakers
6 x Electro-Voice ZX1i
2 x Dynacord TS 400 Vertical Arrays
2 x Electro-Voice SB122 Subwoofers
1 x Electro-Voice N8000 NetMax
1 x Dynacord Promatrix 8000
Electro-Voice ZX1is line the outdoor barbeque space.