LCD
Liquid Crystal Display.

LED
Light Emitting Diode which indicates that the equipment is operating (also called power LED for amplifiers).

Loudness
Psycho-acoustic boost of lower frequency ranges at low volume to create more natural sound. The Loudness effect can be adjusted (“programmed”) to the existing car audio system (amplifier, speakers) using DSC in 6 stages for all car radios – an exclusive Blaupunkt feature.

Low Pass
Active frequency cross-over to control subwoofer systems, whereby the music signal is faded out above a selected frequency.
Sub-X-Over, Sub-Out