BMW Group VZ-42 June 2007 1/2

676 HiFi loudspeaker system

E81/E82/E87, E90/E91/E92/E93, E60/E61, E63/E64, E65/E66, E83, E70, E85/E86 676 HiFi loudspeaker system

Overview

Product description

Accelerate into the future of exclusive sound with innovative technologies: with the HiFi loudspeaker system, you can enjoy quality with a transparency and brilliance never heard before.

Optimum, vehicle-specific adaptation of loud-speaker components with separate amplifier/ equaliser.

Your benefits

• Full-bodied, transparent sound quality featuring powerful basses and brilliant trebles.

• Perfect stereo effect at all seats.

• Full-bodied depth of sound even at low volumes.

• Sound effect independent of driving speed.

Technical information

The details

BMW's novel audio concept involves loudspeakers in HiFi versions 10 and stands out for its neutral, unobtrusive sound. The loudspeakers permit a homogeneous playback as well as a higher and undistorted maximum level due to their enhanced power output.

Special vehicle-specific features:

E90/91/92/93, E60/61, E63/64, E65/66

2 central woofers are positioned under the front seats. The necessary enclosure volume for the central woofers is obtained by connecting the loudspeakers to the side thresholds.

E85

Special woofers with Carver technology were developed specifically for the Roadster. These woofers offer good bass fidelity even when the convertible top is open.

E60/61, E63/64, E65/66 loudspeakers

4 tweeters, silk dome, D=28mm

4 midrange speakers, D=100mm

2 central woofers, magnetic driver, D=217mm

E81/82/87, E90/91/92/93 loudspeakers

4 midrange speakers, D= 100 mm

4 tweeters, D= 28 mm

2 woofers, D= 217mm

E85 loudspeakers

2 tweeters, silk dome, D=28mm

4 midrange speakers, D=100mm

4 woofers, D=160mm

E81/82/87, E90/91, E60/61, E63/64, E65/66 amplifier

6-channel power amplifier with active crossover network and vehicle-specific equalising

E85/86 amplifiers

10-channel power amplifier with active crossover network and vehicle-specific equalising

E60/61, E63/64, E65/66 power ouput

(at 10% distortion)

Midrange/treble range 4 x 25 watt

Bass range 2 x 40 watt

E85/86 power output

(at 10% distortion)

Treble range 2 x 25 watt

Midrange 4 x 25 watt

Bass range 4 x 40 watt

E81/82/87, E90/91/92/93 power output

(at 10% distortion)

Treble range 4 x 25 watt

Midrange 2 x 25 watt

Bass range 4 x 40 watt

BMW Group VZ-42 June 2007 2/2

676 HiFi loudspeaker system

E81/E82/E87, E90/E91/E92/E93, E60/E61, E63/E64, E65/E66, E83, E70, E85/E86 676 HiFi loudspeaker system

Benefits / notes

• Stereo effect at all seats without changing balance due to optimum orientation of loudspeakers. This is achieved by the exact alignment of the dome tweeters, while the directivity of the speakers and the distance between them complement each other perfectly.

• High output of power amplifiers permits full-bodied, low-distortion sound at all amplitude ranges.

• The complex signal processing system maintains uniform sound quality at all driving speeds.

• In contrast to retrofitted solutions, the system's elegant apperance is in line with the BMW high-quality interior. No additional installation efforts with the risk of damage to the inside panelling.

• Fully compatible with the BMW radio units and the requirements for electromagnetic compatibility.

• With a power amplifier on each loudspeaker, the system can be operated at maximum output level with only minimal distortion - more power is available for each loudspeaker.

• By using multichannel loudspeaker systems, the frequency range can be distributed over several loudspeakers, providing a clearer and more differentiated transmission of bass, midrange and treble frequencies and creating a full-bodied sound due to forceful basses and brilliant trebles.