Setting The Tone Controls - Genelec 4010A Operating Manual

Loudspeaker Mounting Position
Flat anechoic response
Free standing in a damped room
Free standing in a reverberant room
Near to a wall
In a corner
Table 1: Suggested tone control settings for various acoustical environments

Setting the tone controls

The frequency response of the Genelec 4010A can
be adjusted to match the acoustic environment by
setting the tone control switches on the rear panel.
The controls are "Treble Tilt" and "Bass Tilt". An
acoustic measuring system such as WinMLS or
comparable is recommended for analyzing the ef-
fects of the adjustments, however, careful listen-
ing with suitable test recordings can also lead to
good results if a test system is not available. Table 1
shows some examples of typical settings in various
situations. Figure 4 shows the effect of the controls
on the anechoic response.
Treble Tilt
The Treble Tilt control (switch 3) attenuates the treble
response of the loudspeaker at frequencies above
5 kHz by 2 dB, which can be used for smoothening
down an excessively bright sounding system.
Bass Tilt
The Bass Tilt control offers three attenuation levels
for the bass response of the loudspeaker below
2 kHz, usually necessary when the loudspeakers are
placed near a wall or other room boundaries. The
attenuation levels are -2 dB (switch 4 "ON"), -4 dB
(switch 5 "ON") and -6 dB (both switches "ON").
Treble Tilt
OFF
OFF
OFF
OFF
OFF
Mounting considerations
Align the loudspeakers correctly
Always place the loudspeakers so that their acoustic
axes (see figure 1) are aimed towards the center of
the listening area. Only vertical placement is pre-
ferred, as it minimises acoustical cancellation prob-
lems around the crossover frequency.
Minimise reflections
Acoustic reflections from objects close to the loud-
speakers like walls, cabinets etc. can cause un-
wanted colouration of the sound image. These can
be minimised by placing the loudspeaker clear of
reflective surfaces.
Minimum clearances
Sufficient clearance for cooling of the amplifier and
functioning of the reflex port must be ensured if the
loudspeaker is installed in a restricted space such
as a cabinet or integrated into a wall structure. The
surroundings of the loudspeaker must always be
open to the listening room with a minimum clear-
ance of 3 centimeters (1
both sides of the loudspeaker. The space adjacent
to the amplifier must either be ventilated or suffi-
ciently large to dissipate heat so that the ambient
temperature does not rise above 35 degrees Cel-
sius (95°F)
Bass Tilt
OFF
OFF
-2 dB
-4 dB
-6 dB
/ ") behind, above and on
3
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English 3