Proel ACDT90 - Manual (Page 12)

6. OPERATIONS:
1. Pressing the POWER switch the unit turns on, and its LED is lit.
Pressing it again the unit turns off.
2. BASS control modifies signal lower frequencies output (up to 10 dB of
boost or cut). Set this control level by personal taste and ambient
acoustic character.
3. TREBLE control modifies signal higher frequencies output (up to 10
dB of boost or cut). Set this control level by personal taste and
ambient acoustic character.
4. Turning clockwise MASTER volume control, the playback level will
raise, turning it counter clockwise it will be lower.
5. LED ladder level indicator shows the output level. When red LEDs are
lit, output signal may be distorted, so please lower the volume.
6. CD PLAYER SECTION.
a. Pressing this section power switch (fig.1 ref.10) the display is lit
and the CD player is ready for use.
b. Pressing the open/close key the CD tray opens, now you can
insert the CD and close the tray by pressing again the same key.
After some seconds the display will show the CD track content,
now it’s possible to begin CD playback pressing play/pause key.