Page 23 of 160
Design 23
Hood.
The fabric hood of the 911 Cabriolet
models has a fixed glass rear screen and
three integral elements manufactured
from magnesium. Together, these make
the hood highly robust and, yet,
particularly lightweight. It’s also smooth
and firm, the fabric is kept taut, and the design line is elegant. The hood opens or
closes in around 13 seconds, up to a
speed of 31 mph.
The interior hood lining is made from a
heat-insulating and sound-absorbing
material, resulting in perceptibly
consistent interior temperatures and an effective suppression of wind noise.
Thankfully, however, even the hood’s
soundproofing properties are no match
for the resonant Porsche sound.
The new 911 Cabriolet models are also
equipped as standard with an electrically
powered wind deflector, which offers practically draught-free driving and
minimal wind noise with the top down.
Page 75 of 160
Safety and environment 75
In an era of intensifying debate about
global climate change and CO2 emissions,
every automotive manufacturer is asking
what it has to offer right now. Our
answer? Excellent performance together
with excellent efficiency.
Emission control.
Vehicles manufactured by Porsche
demonstrate that even high-performance
sports cars can achieve moderate fuel
consumption and exhaust emission
values in their respective category.
This is accomplished, on the one hand,
with the efficient use of fuel by means of
efficiency-enhancing technologies such
as auto start /stop, thermal management, electrical system recuperation, active air
intake flaps and, in conjunction with
Porsche Doppelkupplung (PDK), coasting
mode. On the other hand, cataly tic
converters with stereo Lambda control
circuits provide efficient emission
control. Fuel economy and recycling.
Intelligent lightweight construction is
integral to the Porsche identit y. This
is expressed in the form of a high
proportion of aluminium, magnesium,
plastics and super-high-strength
sheet steels. All materials have been
strategically selected, and the paints
used are predominantly environmentally
friendly water-based paints. Each lightweight material is easily recyclable
and all plastic components are labelled
to facilitate future separation for
recycling. In all, the 911
is up to 95
%
recoverable.
Fuel.
All Porsche models – including the 911 –
are designed to operate on fuels with an
ethanol content of up to 10 %, e.g. ‘E10’.
Ethanol has a positive impact on the CO2
balance because it is derived from plants
that absorb CO
2 from the atmosphere.
For others, it’s the order of the day.
For us, the order of the future.
Environment.
Page 95 of 160
Comfort 95
BOSE® Surround Sound System.
The optional BOSE® Surround Sound
System has been specially developed for
t h e 911
models and is optimally tuned to
the specific interior acoustics of these
particular vehicles. The audio system
features 12 fully active loudspeakers and
amplifier channels including a patented
100 -wat t active subwoofer integral to the
vehicle bodyshell. This fully active
system setup enables each individual
loudspeaker to be optimally adapted to
the vehicle interior and transforms the
911
into a fast-moving concert hall.
Total output 555 watts.
Burmester® High-End Surround
Sound System.
The road is perhaps the last place in the
world in which you can still listen to music
without disturbance. Reason enough,
then, to upgrade your enjoyment the
Porsche way – together with the most
important manufacturer of premium
quality sound systems in Germany.
The result is a sound performance of
the highest level, specially matched to
your 911. The system has 12 amplifier
channels with a total output of 821 wat ts,
12 loudspeakers including an active
subwoofer with 300 -wat t class D
amplifier, a total diaphragm surface
area of more than 1,340 cm
2, and a
frequency response of 35 Hz to 20 kHz. The Burmester
® system uses the
patented integral subwoofer, which
replaces the familiar separate subwoofer
and loudspeaker arrangement of other
systems. Analogue and digital filters
have been optimally defined for their
specific installation location. Ribbon
t weeters (air motion transformers, AMT)
have been used for unmistakably fine,
clear and undistorted high-frequency
sound reproduction with excellent level
stability.
All loudspeaker housings are perfectly
matched and deliver a natural and richly
textured spatial sound, even at top volume.
Music of the future?
Absolutely.
Sound systems.
1 Burmester® High-End Surround Sound System
