Genelec 4020C User Manual

4
The attenuation levels are -2 dB (switch 4 “ON”),
-4 dB (switch 5 “ON”) and -6 dB (both switches
“ON”).
Bass Roll-O
Bass Roll-O (switch 3) activates a -4 dB lter to
the lowest bass frequencies (65 Hz). This can be
used for compensating excessively heavy bass re-
production typically caused by loudspeaker place-
ment near room boundaries.
The factory setting for all tone controls is “OFF”
to give a at anechoic response. Always start ad-
justment by setting all switches to “OFF” position.
Measure or listen systematically through the dif-
ferent combinations of settings to nd the best
frequency balance.
Mounting considerations
Align the loudspeakers correctly
Always place the loudspeakers so that their
acoustic axes (see gure 1) are aimed towards
the center of the listening area. Only vertical
placement is preferred, as it minimises acousti-
cal cancellation problems around the crossover
frequency.
Minimise reections
Acoustic reflections from objects close to the
loudspeakers like walls, cabinets etc. can cause
unwanted colouration or blurring of the sound im-
age. These can be minimised by placing the loud-
speaker clear of reective surfaces.
Minimum clearances
Sucient clearance for cooling of the amplier and
functioning of the reex port must be ensured if the
loudspeaker is installed in a restricted space such as
a cabinet or integrated into a wall structure. The sur-
roundings of the loudspeaker must always be open
to the listening room with a minimum clearance of 3
centimeters (1
3
/
16
”) behind, above and on both sides
of the loudspeaker. The space adjacent to the ampli-
er must either be ventilated or suciently large to
dissipate heat so that the ambient temperature does
not rise above 35 degrees Celsius (95°F)
Mounting options
The Genelec 4020C oers several mounting op-
tions: On the base of the loudspeaker is a 3/8”
UNC threaded hole compatible with a standard
microphone stand. On the rear there are two
M6x10 mm threaded holes for Omnimount
®
size
Table 1: Suggested tone control settings for diering acoustical environments
Loudspeaker Mounting Position Treble Tilt Bass Tilt Bass Roll-O
Flat anechoic response OFF OFF OFF
Free standing in a damped room OFF OFF OFF
Free standing in a reverberant room OFF -2 dB OFF
Near eld or desktop OFF -4 dB OFF
Near to a wall OFF -6 dB OFF

Genelec 4020C Specifications

General

Brand	Genelec
Model	4020C
Category	Speakers
Language	English