ADAM Audio Center Active Version - Handbuch (Seite 10)

10
4.4 Input Gain
‘Input Gain’ regulates the overall input sensitivity of your loudspeaker
within a range of -10 to +10 dB, and controls the volume of your
loudspeaker equally in all frequency ranges.
4.5 Mid / Tweeter Gain
Whereas the ‘Input Gain’ raises or lowers the overall input
sensitivity up to +/-10 dB, the two other gains work within their
specific frequency range (above 800 Hz for the midrange and
above 2.800Hz for the tweeter), raising or lowering up to +/-2 dB
(midrange) or +/-4 dB (tweeter).
4.6 High Shelf (Room EQ)
The other control operates in a different manner. The High Shelf EQ is a
shelving filter that progressively raises or lowers above 6 kHz up to 6 dB.
Whereas the gains raise or lower a specific frequency range as a whole,
the shelving filter does not alter a whole frequency band but alter in this
band: from 6 kHz the frequencies are gradually being changed.
4.7 Parametric Equalizer
The acoustic properties of specific rooms may cause problems
with authentic reproduction of music (see 3.1). Frequently
the bass is the ‘problem child’ in the attempt to create a
natural sound, producing a ‘standing wave’ – the overlapping
of two waves of the same frequency and phase spreading in
opposite directions. This results in local (at specific positions
in a room) imbalances of particular frequencies.
For example, in a room of 6 meters (20 feet) width and length, a standing
wave typically occurs at approximately 28 Hz, meaning that this tone sounds
overemphasized and droning. Using the parametric equalizer properly, a
bass ‘overkill’ like this can effectively be neutralized.
Furthermore, specific listening habits or preferences may lead you to want to
change the lower frequencies to either emphasize or attenuate the bass. The
parametric equalizer is the perfect tool for this as well.
4. Speaker Adjustment