SoundMax SM-CDM1053 - Manual (Page 12)

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Loudness
Press and hold SELECT button then press it repeatedly to select LOUD OFF (LOUD ON). If LOUD ON is
displayed, it means that Loudness function is activated. This function is useful if you need to decrease the
volume without loss of sound quality. To disable the function, select LOUD OFF with VOL knob.
Equalizer (DSP) mode
Press and hold SELECT button then press it repeatedly to select DSP OFF. Rotate VOL knob to choose an
equalizer effect: POP => ROCK => CLASS => FLAT => DSP OFF. After you have reached your desired effect,
leave the unit idle in order for the new setting to take effect.
Beep
Press and hold SELECT button then press it repeatedly to select BEEP OFF (BEEP ON). Rotate VOL knob to
toggle between BEEP ON (beep sound will be heard when buttons are pressed) and BEEP OFF (no sound will
be heard), then leave the unit idle for your desired setting to take effect.
Information display
Press DISP button repeatedly to switch between various information shown on the display, such as radio
frequency, clock, track and other info depending on the playing mode.
AUX in jack
AUX-in jack is intended for connecting an external audio or video equipment to amplify the sound. If
connection is made correctly, the audio signal from the external source will be translated through the
acoustics of the head unit. This enables to adjust the volume and quality of sounding. For example, you can
connect an MP3-player to listen to tracks using the car acoustic system.