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A I R L A Y E R
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Fig. 2 airLayer level control
Note that the bezel is marked in minus dB, from minus infinity, namely off, to 0 dB,
namely all the way up.
In a typical room, a setting of -12 dB to -10 dB is generally appropriate. In the usual
setup, with the side walls a few feet away, a setting of -10 dB is a good place to start.
Their sound should not be obvious. The effect is meant to be subtle and not call attention
to the side tweeters.
If the side walls are different distances from the speakers, or have different types of
materials, you can adjust the airLayer asymmetrically to match.
When determining the best settings, it’s helpful to turn down the electrostatic level all the
way to -6 dB and wait a few minutes for the electrostatic output to decline. This will make
it easier to tell when the side tweeters are balanced, i.e., giving a centered image. Pink
noise is okay for this, but white noise will be better.
As you adjust for overall effect, you maintain balance by keeping the difference in dB
between the left and right settings the same as it was when you first adjusted them.