Genelec 4020C - Audio Level and Tone Controls; Input Level Control; Treble Tilt Control; Bass Tilt Control

3
Level control
The input sensitivity of the loudspeaker can be
matched to the output of the signal source by ad-
justing the level control on the rear panel.
Setting the tone controls
The frequency response of the Genelec 4020C
can be adjusted to match the acoustic environ-
ment by setting the tone control switches on the
rear panel. The controls are “Treble Tilt”, “Bass
Tilt” and “Bass Roll-O”. An acoustic measuring
system such as WinMLS or comparable is recom-
mended for analyzing the eects of the adjust-
ments, however, careful listening 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 5 shows the eect of the controls on the
anechoic response.
Treble Tilt
The Treble Tilt control (switch 2) boosts the treble
response of the loudspeaker at frequencies above
4 kHz by +2 dB, which can be used for compensat-
ing for the high frequency loss occurring at long
listening distance, o-axis listening or when the
loudspeaker is placed behind a screen or decora-
tive cloth.
Bass Tilt
The Bass Tilt control oers 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.
Figure 1: Location of the acoustic
axis
Figure 3:
Control and
connector
layout.
Figure 2: Audio input pin sequence
+
NON-
INVERTING
–
INVERTING
GND
GROUND
+
–
GND
Figure 4: Cable connection for daisy-chaining speakers
ACOUSTIC
AXIS
146 mm
> 0,7 m
292-4020CT
SERIAL NUMBER
This device complies withFCC Part 15 and Canadian
ICES-003 radio frequency ClassBemissionrequirements.
Refer to operatingmanualfor full information.
SIGNAL
INPUT
+ - GND
4020C
ACTIVE
SPEAKER SYSTEM
MADE IN FINLAND
MAINSINPUT
50/60Hz60W
100 - 240 V~
www.genelec.com
292-8030W
WARNING:ELECTRICSHOCKHAZARD.DONOT OPEN. DO NOT
SUBJECT TOWATER OR MOISTURE. NOUSER SERVICEABLE
PARTSINSIDE.REFER SERVICING TOQUALIFIED PERSONNEL.
USE EARTHEDMAINSCONNECTIONONLY.
AVERTISSEMENT:RISQUEDE CHOCÉLECTRIQUE. NE PAS
OUVRIR.NEPAS EXPOSER ÀL'EAU OU L'HUMIDITÉ.AUCUN
COMPOSANT ÀL'INTÉRIEUR REMPLAÇABLEPAR L'UTILISATEUR.
ADRESSER TOUTERÉPARATIONÀUN PERSONNEL QUALIFIÉ.
CETAPPAREILDOITÊTRE RACCORDÉÀLATERRE.
LAITE ONLIITETTÄVÄ SUOJAKOSKETTIMILLAVARUSTETTUUN
PISTORASIAAN.
APPARATETMÅ TILKOPLES JORDETSTIKKONTAKT.
APPARATENSKALL ANSLUTASTILL JORDATUTTAG.
ON
OFF
ISS
FREE STANDINGIN AROOM:
ALLTONECONTROLSOFF
-6 dBBASS
TILT
-4 dBBASS
TILT
TREBLE TILT +2 dB
BASS ROLL OFF-4 dB
-2 dB
BASS TILT -4 dB
-6 dB
SUGGESTED TONECONTROL
SETTINGS
ON
OFF
ISS
FREE STANDINGIN AROOM:
ALLTONECONTROLSOFF
-6 dBBASS
TILT
-4 dBBASS
TILT
TREBLE TILT +2 dB
BASS ROLL OFF-4 dB
-2 dB
BASS TILT -4 dB
-6 dB
REFLEX PORT
TONE CONTROLS
CONNECTOR PANEL
(HORIZONTAL)
THREADS FOR
CEILING AND
WALL MOUNTS
POWER SWITCH
SENSITIVITY CONTROL