Operating elements on the subwoofer
on the front . . .
ontop...
1. LED display - display area for operating information
2. IR - infrared sensor, receives the remote control signals
3. SD - slot for SD cards
4. USB - USB socket
5. POWER - on- / off switch (standby)
6. SD / USB - to toggle SD/MMC resp. USB media
7. Master Volume - volume control
5