How to choose sound settings on Philips micro theatre?

DBB (Dynamic Bass Boost) Press DBB on the remote to enable/disable the DBB feature. * DBB enhances the bass response DSC (Digital Sound Control) Press DSC on the system or remote control repeatedly to select: FLAT, POPS, JAZZ, CLASSIC or ROCK. * DSC provides different types of preset sound equalizer settings LOUDNESS Press LOUDNESS on the remote to enable or disable the LOUDNESS feature. * LOUDNESS enables the system to automatically increase the treble and bass sound effect at low volume Only a single sound feature can be activate at one time.