Involve Audio Akoustos Y4-1, Руководство пользователя

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pg. 20
3.5 Volume
Use the Volume Knob to adjust the system volume, turn clockwise to increase volume
and anti-clockwise to decease volume. The volume can be adjusted from -∞db to
+20db. Try to avoid going above 0db, instead adjust the volume output on your input
device higher if possible. The volume is displayed on the Main Display.
At 0db the system is taking the signal from your device directly with no extra gain.
When above 0db the system must add gain, which can degrade the quality of the
sound. When below 0db the system is removing gain, this does not degrade the quality
of the sound. This is why systems use both negative and positive numbers for volume
control.
3.6 Sub-Woofer Level
Use the Sub-Woofer Knob on the front of the system to vary the bass level of the
system to your individual preference.
3.7 Rear Speaker Level
The volume of the rear speaker can be adjusted with the Rear Level Knob to your
preference.
3.8 Headphones
Headphones can be plugged into the 6.35mm Headphone Socket on the front of the
unit. Before plugging in your headphones into the system turn the volume down below
-10db. Once your headphones are plugged in the Y Speakers and Sub-Woofers will be
muted. You can adjust the volume with the Volume Knob as normal.