User Manual

3
Minimum clearances
Sufficient cooling for the amplifier and func-
tioning 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 lis-
tening room with a minimum clearance of
5 centimeters (2”) behind, above and on both
sides of the loudspeaker. The space adja-
cent to the amplifier must either be ventilated
or sufficiently large to dissipate heat so that
the ambient temperature does not rise above
35 degrees Celsius (95°F).
Mounting options
The vibration insulating Isolation Positioner/
Decoupler™ (Iso-Pod™) table stand allows
tilting of the loudspeaker for correct align-
ment of the acoustic axis. The stand can be
attached to three mounting points allowing
vertical and symmetrical horizontal position-
ing (see figures 1 and 5).
Genelec 8040B and 8050B can be fitted
to Omnimount
®
Series 30 (8040B) and 60
(8050B) and König & Meyer loudspeaker
mounts on two sets of M6x10 mm threaded
holes on the back of the enclosure. On the
base of the enclosure is an M10x10 mm
threaded hole which can be used for secur-
ing the loudspeaker to its base. Do not use
this thread for mounting the loudspeaker on
a microphone stand which has a 3/8” UNC
thread.
Setting the input sensitivity
The input sensitivity of the loudspeakers
can be matched to the output of the mixing
console, or other source, by adjusting the
input sensitivity control on the rear panel
(see figure 1). A screwdriver is needed for the
adjustment. The manufacturer’s default set-
ting for this control is -6 dBu (fully clockwise)
which gives an SPL of 100 dB @1m with
-6 dBu input level.
ISS
TM
autostart function
When the power switch on the loudspeaker is
set to “ON”, the Intelligent Signal Sensing
TM
(ISS
TM
) autostart function of the loudspeaker
is active. Automatic powering down to standby
mode happens after a certain time when play-
back has ended. The power consumption in
standby mode is typically less than 0.5 watts.
The playback will automatically resume once
an input signal is detected from the source.
There is a slight delay in the automatic
powering up. If this is undesirable, the ISS
TM
function can be disabled by setting the “ISS
DISABLE” switch on the back panel to “ON”
position. In this mode, the monitor is powered
on and off using the power switch on the back
panel.
Setting the tone controls
The frequency response of the system may
also have to be adjusted to match the acous-
tic environment. The adjustment is carried out
by setting the three tone control switch groups
“treble tilt”, “bass tilt” and “bass roll-off” on
the rear panel of the amplifier. There is also
a special “desktop low frequency” tone control
which gives an attenuation of 4 dB at 160 Hz
to compensate the effect of a mixing console,
desk or other reflective surface between the
listener and the loudspeaker. The factory set-
tings for these controls are all “OFF” to give a
flat anechoic response.
Bass roll-off control
Bass roll-off (first switch group from the left)
affects the low frequency roll-off of the loud-
speaker and attenuates its energy output near
the cut-off frequency. Attenuation levels of -2,
-4 or -6 dB can be selected.
Figure 1. Amplifier panel layout of the 8040B
Figure 2. Location of the acoustic axis
Figure 3. RCA to XLR cable
Cable
Screen
RCA
(Source)
XLR
(Speaker)
DESKTOP
CONTROL
20Hz 160Hz
BASS
ROLL-OFF
800Hz
+2
0
-4
-6
-2
dB
BASS
TILT
OFFON
4kHz 20kHz
ALL OFF
TREBLE
TILT
dBu
-4
-6
0
-2
8040B BI-AMPLIFIED
MONITORING SYSTEM
MAGNETICALLYSHIELDED
MADE IN FINLAND
MAINSINPUT
50 /60Hz110 W 230 V~
SERIAL NUMBER
292-8040T-6
www.genelec.com
+ - GND
1
3
2
292-8040W
WARNING
ELECTRIC SHOCKHAZARD. DO NOTOPEN.DONOT SUBJECTTOWATER OR
PERSONNEL. USEEARTHED MAINS CONNECTIONONLY. NOTE!THISMONITOR
MOISTURE. NOUSER SERVICEABLE PARTSINSIDE. REFERSERVICINGTOQUALIFIED
SHOULD NOTBE MOUNTED ONAMICROPHONESTAND ASTHE BASE THREADISM10.
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L'HUMIDITÉ. AUCUNCOMPOSANTÀL'INTÉRIEURREMPLAÇABLEPARL'UTILISATEUR.
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PISTORASIAAN.APPARATET MÅTILKOPLESJORDETSTIKKONTAKT.
APPARATEN SKALLANSLUTAS TILL JORDATUTTAG.
BASS
ROLL-OFF
DESKTOP
CONTROL
TREBLE TILTBASS TILT
+4
+2
+6
INPUT SENSITIVITY
REQUIRED FOR
100dB SPL@1m
ISS
DISABLE
REFLEX PORT
TONE CONTROLS
Iso-Pod™TABLE
STAND
THREADS FOR
CEILING AND
WALL MOUNTS
CONNECTOR PANEL
(HORIZONTAL)
ACOUSTIC
AXIS
> 0,7 m
h
8040B: h=240 mm
8050B: h=290 mm