Optimal sound reproduction

The audio system is pre-calibrated for optimal sound reproduction using digital signal processing.
This calibration takes into account factors such as the speakers, amplifier, cabin acoustics, the listeners' seating positions, etc., for each combination of vehicle/infotainment system.
There is also a dynamic calibration that takes into consideration the volume level, radio reception, and the speed of the vehicle.
The settings that are described in this manual, (Bass, Treble, Equalizer etc.) are only intended to enable the user to adapt sound reproduction to his/her personal tastes.
See also:
Accessory installation
• We strongly recommend that Volvo owners
install only genuine, Volvo-approved
accessories, and that accessory installations
be performed only by a trained and
qualified Volvo service technician.
...
Introduction
The infotainment system in your vehicle is available in two versions:
High Performance Multimedia
7" color TFT display
Voice control1
Thumb wheel on the steering wheel keypad
AM/FM/HD ...
Performance
The C70 doesn't compete with the BMW M3s and Chevrolet Corvettes of the
convertible world. It's more subdued than that, even when you get the
top-of-the-line engine and option package like we test ...
