676 Hi Fi Loudespeaker System

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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

background image

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.


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