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Index Data Technology Repairs Car care Controls Overview
179n
DSP sound system* Mirrors with automatic dimmer
The DSP Professional premium sound
system features a special amplifier
combined with Digital Sound
Processing (DSP) and integrated
speakers to surround you with crisp,
true-to-life sound reproduction. The
speaker system's subwoofers, woofers,
midrange speakers and tweeters
furnish you with an impressively full-
bodied listening experience. The loud-
speakers are oriented in such a manner
that they produce the aural sensation
that you would experience facing the
stage in a concert hall. The system also
automatically adjusts the bass and
treble settings to compensate for
changes in volume and vehicle speed.
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The interior and exterior mirrors with
automatic dimming feature reduce the
glare from following traffic by adapting
the intensity of the reflected images to
correspond to levels of light registered
by the unit's sensors. The mirrors revert
to their undimmed setting as soon as
the light source disappears.
One sensor is mounted on the front
of the interior mirror housing and is
designed to monitor light levels in the
area immediately forward of the vehicle.
A second sensor is integrated within
the mirror's glass.
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The electronic control system operates
by comparing the respective levels of
luminous intensity in front of and behind
the car. The difference provides the
basic parameter used to modulate an
electrical current and induce chemical
changes in a semisolid layer incorpo-
rated in the lens.
The semisolid reacts chemically to this
electrical current, thus providing infi-
nitely-variable dimming of the mirror
(electrochromic technology).
As a result, it is no longer necessary
to dim the mirror manually, and the
driver can maintain full concentration
on traffic.
Online Edition for Part No. 01 41 0 155 429 - © 09/00 BMW AG
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