The sound reproduction is optimised by the 2 types of amplifier:
They are fitted according to the desired type and number of speakers:
The active frequency gates transmit to the amplifier module concerned only that frequency range that can be effectively reproduced by the connected speaker system. The speakers (high, mid and low-range speakers/woofers) are connected to those audio output stages.
The following components are described for the stereo and hi-fi amplifier:
HiFi amplifiers are amplifiers with active frequency gates. Active frequency gates achieve better acoustic results than passive frequency gates.
The HiFi amplifier does not have speed-dependent volume adjustment or speed-dependent equalising. The function of the HiFi amplifier is only to amplify the low-frequency output.
The Audio System Controller (ASK) is integrated in the radio/M-ASK/CCC control unit. The ASK manages all audio signals.
The amplifier has 4 input channels and 7 outputs.
The amplifier has a separate power supply. The amplifier is switched on by the RAD_ON signal from the ASK (> 8 V = ON / < 6 V = OFF).
On request from the ASK, the amplifier performs speed-dependent volume adjustment. The low frequency range in particular is boosted at high driving speeds.
The space simulation and user-programmable equaliser functions are operated with the aid of the Central Control Display. The desired function is selected by means of the Controller on the front of the centre arm rest.