Bose Surround Sound System (Option)
Bose Surround Sound system (option)
The completely re-engineered digital Bose Surround Sound system writes another page in the living history of Bose sound systems in Porsche vehicles. This confirms the position of Porsche and Bose as leaders in their respective industries. This is the first time that a Surround Sound system has been offered in a 911 Carrera. Thirteen loudspeakers and a 7-channel digital amplifier integrated in the digital MOST bus ensure a sound experience never before experienced in the sports car segment.
The Bose Surround Sound system incorporates the following components:
Speaker
- Switch panel: 2x 25 mm neodymium high-frequency speakers
("soft-dome spherical cap")
1x 70 mm neodymium mid-frequency loudspeaker
- Door: 2x 80 mm neodymium mid-frequency loudspeakers
2x 200 mm neodymium low-frequency loudspeakers
- Rear: 2x 25 mm neodymium high-frequency speakers
("soft-dome spherical cap")
2x 80 mm neodymium mid-frequency loudspeakers
- Rear shelf: 1x Active subwoofer with 2x 130 mm low-frequency loudspeakers (bass reflex system)
Audio electronics
- 7-channel MOST digital amplifier with 5x25 watt linear amplifiers and 1x100 watt switching amplifier.
- Additionally 1x100 watt switching amplifier integrated in the active subwoofer.
- External microphone (housed in the steering column cover) for detecting background noise in the passenger compartment
Signal processing
- Centre fill and surround stage
- Centerpoint signal processing technology
- Active electronic equalisation
- Dynamic loudness function
- Bose AudioPilot
Functionality
The following settings must be made in the sound menu of the PCM:
- Adjustment of the sound using base and treble setting
- Adjustment of the sound focus using fader and balance
- Activation of AudioPilot
- Activation of Surround Sound (Bose Centerpoint technology)
Centre fill and surround stage
The additional centre fill loudspeaker in the centre of the dashboard is activated using data from the left- and right-hand channel via a special signal processing system (surround stage). This ensures an optimum and balanced sound for all passengers.
Centerpoint signal processing technology
The Centerpoint system is a surround decoder specially developed for the limited auditory environment in vehicles. The algorithm used by this proprietary Bose technology delivers an exclusive sound experience with exhilarating Surround Sound pleasure. The technology also converts conventional audio sources such as CDs, or even stereo recordings, into five separate audio channels.
Active electronic equalisation
In order to achieve a high-fidelity sound experience, Bose active electronic equalisation exactly adapts acoustic reproduction to the specific acoustics of the vehicle interior. The reproduction of all frequencies is adapted so as to ensure that all passengers enjoy the same superior sound quality, regardless of where they are sitting.
Dynamic loudness function
The dynamic loudness function enables the bass tones to be amplified at low volume levels. This compensates for the reduced sensitivity of the human sense of hearing in the bass range. This process functions much more precisely than conventional loudness control systems. The base tones are amplified in such a way that there is no audible change.
Bose AudioPilot
The AudioPilot automatically controls the sound and volume as a function of background noises in the passenger compartment such as wind, tyre noise and conversation. This functionality ensures a constant acoustic impact in all driving conditions, which means that the driver does not have to continuously re-adjust the sound. The background noises are recorded by a special microphone in the steering column cover and processed. A considerable improvement in comparison with the system in the previous model has been achieved through the use of additional information (speed, etc.) in the control algorithm. As a result, the volume control is now much more robust and almost all unwanted fluctuations in volume have been eliminated.
Surround Sound (Bose Centerpoint technology)
Bose Automotive Surround Sound can be switched on at the touch of a button. This system uses additional independent audio channels in the front and rear of the vehicle to produce a lifelike and high-fidelity 360° sound experience. The BOSE-patented signal processing system increases the stereo sound of stereo recordings. This results in a much more refined sound experience.
The intensity of the surround effect can be precisely set in the Sound-Set menu (from 12 to +9).