LOUDNESS CONTROL

This amplifi er is fi tted with a loudness control which provides a boost to lower frequencies at lower listening volumes.

This creates the effect of increasing the perceived amount of bass / mid content in the music when playing the amplifi er at a lower level. This control is effective on frequencies between 20Hz and 800Hz and its effect decreases as the amplifi er volume level is increased. When the amplifi er volume reaches its maximum, the effect this loudness control has is negligible.

To activate this loudness control press the function key (9) four times to change the LCD display to the loudness control.

The last setting for loudness will be displayed.

To select the loudness setting turn the rotary control (10) either clockwise or anticlockwise to change the setting from on to off or vice versa.

Once selected, the loudness feature will activate automatically, there is no need to press any further buttons to activate this control.

Following this operation, the LCD display will return to indicate the default volume setting if no operation occurs within 5 seconds. To reactivate loudness control it will be necessary to press the function button again four times.

SPEAKER ON/OFF CONTROL

This amplifi er is fi tted with a loudspeaker control which allows the loudspeakers to be turned off when listening through headphones

To activate the speaker control press the function key again fi ve times to change the LCD display to the speaker control.

The last setting for the loudspeakers will be displayed.

To change this speaker setting turn the rotary control (10) either clockwise or anticlockwise to change the setting from on to off or vice versa.

As the rotary control is turned from on to off and back again, the loudspeakers will switch on or off automatically, there is no need to press any further button to activate this control.

Following this operation, the LCD display will return to indicate the default volume setting if no operation occurs within 5 seconds. To reactivate the loudspeaker control it will be necessary to press the function button again fi ve times.

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Acoustical Solutions SP 101 manual Loudness Control, Speaker ON/OFF Control