EDIFIER R2750DB - Speaker Overview and Controls; Speaker Controls and Indicators; Speaker Ports and Connections

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Illustration
1. Treble control
2. Bass control
3. Volume control/Input selection
Rotate: adjust volume
Press: switch between modes
Press and hold:
Standby status: power on
Line In 1/Line In 2/optical/coaxial mode: standby
Bluetooth mode (disconnected): standby
Bluetooth mode (connected): disconnect Bluetooth
4. LED indicator:
Red: Optical
Orange: Coaxial
Blue: Bluetooth
Green: Line In 1/Line In 2
5. Line In input 1/2
6. Bass output
7. Optical input
8. Coaxial input
9. Connect to passive speaker
10. Power switch
11. Power cable
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