TDA7418 Datasheet, PDF (18/29 Pages) STMicroelectronics – 3 Band car audio procesor

Description of the audioprocessor
TDA7418
4.8
4.8.1
Treble
There are two parameters programmable in the treble stage:
Attenuation
Figure 16 shows the attenuation as a function of frequency at a center frequency of
17.5kHz.
Figure 16. Treble Control @ f_C = 17.5kHz
4.8.2
Center frequency
Figure 17 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.
Figure 17. Treble Center Frequencies @ Gain = 14dB
4.9
Speaker attenuator
The four speakers have independent soft step speaker controls. And their attenuators can
be adjusted from +15dB to -79dB with 1dB steps.
4.10
Subwoofer attenuator
The Subwoofer output is a single ended mono output. The attenuator is exactly the same
like the other speakers.
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