ELAD SP-1A User Manual - Rev 2 - 05/2021
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2
Connections and operations
Power supply
There are 2 powerpole (red-black) connectors on the rear panel. The DC IN connector
allows to power the speaker, the DC OUT connector allows to power another device using
the SP-1A as bypass. To power up the SP-1A, switch on the POWER switch. Note : if the
SP-1A is not powered the audio input is connected directly to the loudspeaker.
Audio IN
The Audio IN stands on the 3.5mm jack connector on the rear panel. The TIP connection is
the input line.
Mode selection
On the bottom right of the front panel there is the MODE button which allows to change the
amplification mode of the speaker. The corresponding LED indicates the selected current
mode :
1. flat mode, it produces the sound without equalization,
2. filtered mode, it applies a 300Hz ÷ 3kHz filter,
3. noise reduction mode, it allows to choose 5 level of noise reduction.
Mute
On the bottom left of the front panel there is the MUTE button that allows to mute the
speaker, when the MUTE function is activated the corresponding LED is on.
Volume
Keeping pressed the MUTE button for about 1 second actives the volume adjustment
function. The LEDs start to blink (including the MUTE LED), pressing the MODE button
allows to choose one of the 5 level of volume. The levels are marked as follows :
Level 1 Level 2 Level 3 (default) Level 4 Level 5
To exit from the volume adjustment function, keep pressed the MODE button for about 1
second, alternatively the function exits automatically after 30 seconds.
