PRESONUS AIR SERIES, Owner'S Manual

2 

Getting Started 

2.2 

Level-Setting Procedure: AIR15s and AIR18s

AIR-Series Loudspeakers 

Owner’s Manual

4

2.2 

Level-Setting Procedure: AIR15s and AIR18s

1.  With the power switch in the Off position, connect the IEC plug 

to the IEC socket connection on the back of each loudspeaker 
and plug it into a grounded AC outlet or surge protector. 

2.  Turn the level knobs on your full-range loudspeakers 

fully counterclockwise to the lowest position.

3.  Turn the Output level knob on your AIR-series subwoofer counterclockwise to the 

lowest position.

4.  Connect your line-level source (e.g., a StudioLive mixer) to the Line 

inputs. This is a combo jack that accepts a balanced ¼” TRS or XLR plug. 
If you are connecting a stereo source, the left side should be connected 
to Input 1 and the right side should be connected to Input 2.

5.  Connect Outputs 1 and 2 of your AIR-series subwoofer to the line 

inputs of the left and right full-range loudspeakers respectively.

6.  Power on your line-level source.

7.  Power on your AIR-series subwoofer.

8.  Power on your full-range loudspeakers.

9.  Turn the line level knob on your full-range loudspeakers to the 12 o’clock position.

10. Turn the Master Volume knob on your AIR-series 

subwoofer to the 12 o’clock position. 

11. With audio playing from your line-level source, turn the line level knob on your 

full-range loudspeakers until you have achieved a comfortable listening volume.

Power User Tip: 

If more high-frequency output level is required, turn the Line level 

knob clockwise on your full-range loudspeakers. In most cases, the level should 
be set the same on both loudspeakers. Adjust the Output level control on your 
AIR-series subwoofer to balance the low-frequency content level to taste.

-80 -60 -40 -20 0 10

DIRECT OUT

MIX OUT

MIC

LINE

-80dB