Gradient Evidence User Manual page 6

BASS LEVEL ADJUSTMENT
The Gradient Evidence is equipped with a three position
bass level adjustment. Correct level depends not only on
the placement of the speaker but also on personal taste.
The level of bass relative to the mid and high frequencies
is adjusted by the jumper near the terminals. In the
vertical position (H) the level of the bass is about 3dB
higher than in the position (L). If the jumper is taken away,
the level of the bass remains as in the position (H) but the
level of the treble is increased giving a little bit brighter
sound.
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