Instrukcja obsługi Genelec 4040A

Genelec monitor 4040A

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Genelec 4040A
Active Loudspeaker
Operating Manual
4040A
General
The bi-amplified Genelec 4040A is a power-
ful but compact two way active loudspeaker
designed for fixed installations. As an active
loudspeaker, it contains drivers, power ampli-
fiers, active crossover filters and protection
circuitry. The 4040A is designed for indoor
use only, in temperatures between 15 to
35 degrees Celsius and relative humidity
between 20 % and 90 %.
The MDE™ (Minimum Diffraction Enclo-
sure™) loudspeaker enclosure is made
of die-cast aluminium and shaped to
reduce edge diffraction. Combined with the
advanced Directivity Control WaveguideTM
(DCWTM), this design provides excellent fre-
quency balance in difficult acoustic environ-
ments.
Positioning The Loudspeaker
Each 4040A is supplied with an integrated
amplifier unit, mains cable, a 5-pin connec-
tor for audio signal and 12 V trigger voltage,
a keyhole type wallmount and an operating
manual. After unpacking, place the loud-
speaker in its required listening position,
taking note of the line of the acoustic axis.
The axis should be pointed towards the
center of the listening area.
Connections
Before connecting up, ensure that the loud-
speakers and the signal source have been
switched off. The power switch of the 4040A
is located on the back panel (see Figure
3). Connect the loudspeaker to an earthed
mains connection with the supplied mains
cable. Never connect the loudspeaker to
an unearthed mains supply or using an
unearthed mains cable. Audio input is via
a 10 kOhm balanced Phoenix connec-
tor. The connector also has two pins for 12
V trigger voltage for power switching. The
pin sequence of the connector is shown in
Figure 2.
Connect the signal cable and 12 V trigger
voltage to the 5-pole plug provided with the
loudspeaker and secure the connections by
tightening the screws on each pole. Push the
plug into the connector on the loudspeaker.
Never connect the 4040A to the loud-
speaker outputs of a power amplifier or an
integrated amplifier or receiver.
Once the connections have been made,
the loudspeaker is ready to be switched on.
Controls
Level Control
The input sensitivity of the loudspeaker can
be matched to the output of the signal source
by adjusting the rotary level control on the
rear panel.
Autostart Sensitivity
This control sets the triggering sensitivity of
the signal sensing Autostart function. In case
of a high background noise level in the audio
network, the automatic shutoff may not func-
tion as the circuit detects the noise and mis-
interprets it as a valid signal. Switching the
“Autostart Sensitivity” switch to “ON” reduces
the triggering sensitivity and gives better
immunity to noise in the signal network. On
the other hand, if a very low playback level
is desirable, the Autostart function works
better in the more sensitive “OFF” setting.
The required triggering voltages are approxi-
mately 0.4 mV (OFF) and 1.4 mV (ON).
Autostart Off Time
This control sets the shutoff delay of the
Autostart function. When the switch is set to
“OFF”, the loudspeaker shuts off one hour
after ending the playback. In the “ON” setting,
the delay is 15 minutes.
Led Off
This switch turns off the green power indica-
tor LED. However, the overload indication by
red coloured LED remains active.
Tone Controls
The frequency response of the Genelec
4040A can be adjusted to match the acous-
tic environment by setting the tone control
switches on the rear panel. The controls
are “Bass Roll-Off”, “Bass Tilt” and “Treble
Tilt”. An acoustic measuring system is rec-
ommended for analyzing the effects of the
adjustments, 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 4 shows the effect
of the controls on the anechoic frequency
response.
Bass Roll-Off
The Bass Roll-Off control (switches 1 to 3
in switch group 1) affects the low frequency
roll-off of the loudspeaker and attenuates its
energy output near the cut-off frequency (55
Hz). Attenuation levels of -2, -4 or -6 dB can
be selected.
Bass Tilt
The Bass Tilt control (switches 2 to 4 in
switch group 2) offers three attenuation levels
for the bass response of the loudspeaker
below 800 Hz, usually necessary when the
loudspeaker is placed near a wall or other
room boundaries. The attenuation levels are
-2 dB (switch 3 “ON”), -4 dB (switch 4 “ON”)
and -6 dB (both switches “ON”).
Treble Tilt
The Treble Tilt control (switches 2 to 4 in
switch group 3) adjusts the treble response
of the loudspeaker at frequencies above 4
kHz. Two attenuation levels, -2 dB (switch 3
“ON”) or -4 dB (switch 2 “ON”) are available
for smoothening down an excessively bright
sounding system, while the +2 dB setting
(switch 4 “ON”) provides slightly increased
treble level suitable for heavily damped sur-
roundings.
The factory setting for all tone controls is
“OFF” to give a flat anechoic frequency
response. Always start adjustment by set-
ting all switches to “OFF” position. Measure
or listen systematically through the different
combinations of settings to find the best fre-
quency balance.
ACOUSTIC
AXIS
225 mm
8 7/8”
Figure 1: Location of the acoustic axis
Figure 2: Audio and 12 V trigger
connector pin sequence
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 preferred, as it
minimises acoustical cancellation problems
around the crossover frequency.
Minimise Reflections
Acoustic reflections from objects close to the
loudspeakers like walls, cabinets etc. can
cause unwanted colouration or blurring of
the sound image. These can be minimised
by placing the loudspeaker clear of reflective
surfaces.
Minimum Clearances
Sufficient clearance for cooling of the ampli-
fier and functioning of the reflex port must be
ensured if the loudspeaker is installed in a
restricted space such as a cabinet or inte-
grated into a wall structure. The surroundings
of the loudspeaker must always be open to
the listening room with a minimum clearance
of 5 centimeters (2”) behind, above and on
both sides of the loudspeaker. The space
adjacent to the amplifier (back panel of the
enclosure) must either be ventilated or suf-
ficiently large to dissipate heat so that the
ambient temperature does not rise above 35
degrees Celsius (95°F).
Mounting Options
The Genelec 4040A offers several mount-
ing options: It can be fitted to Omnimount®
Series 30 and König & Meyer loudspeaker
mounts or the keyhole wall mount adapter
provided with the loudspeaker 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 securing the loudspeaker to its
base. See Genelec Accessories Catalogue
on www.genelec.com for a complete list of
mounting hardware options.
Autostart And Remote Control
The 4040A is equipped with an Autostart
function, which automatically turns the ampli-
fier to Standby mode if an input signal has
not been detected for approximately 3 hours
(Auto Off Time switch set to “OFF”) or 15 min-
utes (Auto Off Time switch set to “ON”), and
back to “ON” mode when the signal returns.
The triggering sensitivity can be selected
with the Autostart Sensitivity switch (see
chapter Autostart Sensitivity above).
The amplifier mode can also be switched
by a 12 V DC trigger type remote control. The
remote control wires can be connected to the
first two (starting from left) poles of the Phoe-
nix connector (See Figure 2 for the connector
pin sequence). Remote control overrides the
Autostart function.
Maintenance
No user serviceable parts are to be found
within the loudspeaker. Any maintenance
or repair of the 4040A unit should only be
undertaken by qualified service personnel.
Safety Considerations
Although the 4040A has been designed in
accordance with international safety stand-
ards, the following warnings and cautions
should be observed to ensure safe operation
and to maintain the loudspeaker under safe
operating conditions:
• Servicing and adjustment must only be
performed by qualified service personnel.
• The loudspeaker must not be opened.
• Do not use this product with an
unearthed mains cable or an unearthed
mains connection as this may compro-
mise electrical safety.
• Do not expose the loudspeaker to water
or moisture. Do not place any objects
filled with liquid, such as vases on the
loudspeaker or near it.
• This loudspeaker is capable of produc-
ing sound pressure levels in excess of
85dB, which may cause permanent hear-
ing damage.
• Free flow of air behind the loudspeaker
is necessary to maintain sufficient cool-
ing. Do not obstruct airflow around the
loudspeaker.
• Note that the amplifier is not completely
disconnected from the AC mains service
unless the mains power cord is removed
from the amplifier or the mains outlet.
Guarantee
This product is guaranteed for a period of two
years against faults in materials or workman-
ship. Refer to supplier for full sales and guar-
antee terms.
Speaker Mounting Position Treble Tilt Bass Tilt Bass Roll-Off
Flat anechoic response None None None
Free standing in a damped room -2 dBNone None
Free standing in a reverberant room -4 dBNone None
In a corner -4 dB -4 dBNone
TREBLE
TI dBLT
BAS S
TI dBLT
MAXMIN
LEVEL
-4 +2
-2
-6 -2
-4
LED OF F
AUTOOFF
TIME
BAS S
ROLL-
OFF dB
-2
-6 -4
AUTO TSTAR
SEN SITIVITY
FREES T IN A :ANDING ROOM
ALLT FFONE CONTROLS O
-6 dBBASS
TILT -4 dBBASS
TILT
3
SU GGESTED NE CONTROL SETTI NGSTO
421 3 421
MAINS IN PUT
50 / 60 H z 170 W 230 V~
SERI AL NUM BER
29 402-40 T-6
+12V
GND
+
_
BALANCED
INPUTSIGNAL
REMOTEMAINS
SWIT INCH G
GND
OFFON
SPEAKERSYST EM
ww genelec.comw. MADE IN FI NLAND
4040 AACTIVE
CONTROL
SWITCHES
SENSITIVITY
ADJUSTMENT
BALANCED SIGNAL
INPUT CONNECTOR
AND 12 V TRIGGER INPUT
MAINS POWER
SWITCH
MAINS CONNECTOR
WALL MOUNT
BRACKET INSTALLED
Figure 3: Control and connector layout on the rear panel of an 4040A.
Table 1: Suggested tone control settings for differing acoustical environments

Specyfikacje produktu

Marka: Genelec
Kategoria: monitor
Model: 4040A

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