BMW Radio and Information Systems Bedienungsanleitung Seite 20

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20
Communications
Top-HiFi System
The Top-HiFi audio system consists of following components:
Radio Business-CD or CID
Top-HiFi amplifier
Front left and right low-range speakers (woofers)
Front left and right high-range speakers (tweeters)
Front left and right mid-range speakers
Rear left and right mid-range speakers
Rear left and right low-range speakers (woofers) in Carver technology
CD changer (optional)
Top-HiFi Amplifier
With regard to its functionality, the Top-HiFi amplifier corresponds to the previous DSP
amplifier as already used in other model series. The special features on the E85 are the two
high voltage output stages (30 V) for the Carver woofers.
The Top-HiFi amplifier has 2 analogue inputs (left and right). In addition, the Top-HiFi ampli-
fier features a digital input for the CD changer connection (coaxial cable). This arrangement
achieves a higher signal quality.
The top HiFi amplifier is installed in the luggage compartment next to the vehicle battery.
Front low-range speaker (woofer)
The woofer has a diameter of 160 mm and a paper cone. The maximum load capacity is
50 W. The woofers (low-range speakers) cover a frequency range from 50 Hz to 500 Hz.
The front woofers (low-range speakers) are mounted at the bottom in the A-pillars on the
left and right.
High-range speakers (tweeters)
The tweeter has a diameter of 26 mm and a fabric cap or calotte. The maximum load
capacity is 25 W. The tweeter (high-range speaker) covers a frequency range from 4000 Hz
to 20,000 Hz.
The frequency range of the high-range speaker is set by means of a capacitor.
Top-HiFi Amplifier
1. Top-HiFi Amplifier
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