Genelec 5040B Operating Manual
5040B
Genelec 5040B
Active Subwoofer
Operating Manual
Käyttöohje
Manuel d’utilisation
5040B Active Subwoofer
General description
The Genelec 5040B is a very compact active
subwoofer designed to complement up to
five Genelec 6010A/B active loudspeakers or a pair of the slightly bigger 8020’s or
8030’s. The 5040B extends
response down to 35 Hz
fectly with the 6010’s in any environment.
The playback level for the whole system is
conveniently controlled by the remote volume
control provided with the subwoofer.
the system’s bass
and integrates per-
Installation
Before connecting the audio signals, ensure
that all equipment is switched off.
The subwoofer is equipped with six RCA
signal inputs (FRONT L, FRONT R, CENTER,
REAR L, REAR R and LFE) and a 3.5 mm
stereo jack input. These allow connecting the
5040B to a variety of line level audio sources
with either 3.5 mm Jack or RCA type audio
connectors. Suitable sources are preamplifiers, computer sound cards, portable audio
players, “PRE OUT” connectors on a Home
Theater receiver, etc. Two separate sources
can be connected to the 3.5 mm Jack and the
FRONT L and R inputs at the same time, but
this may cause a slight increase of the noise
level.
As the 5040B contains its own amplifier, no
separate power amplifier is needed. Never connect the 5040B to the loudspeaker outputs of a
power amplifier, integrated amplifier or receiver.
Connect the audio signal cables from your
source to the corresponding RCA connectors. Next, connect the main loudspeakers
to the subwoofer with RCA cables from the
subwoofer’s FRONT L, FRONT R, CENTER,
REAR L and REAR R “OUT” connectors to
the signal inputs of the corresponding main
loudspeakers.
If you are using the 5040B with Genelec
8020 or 8030 active loudspeakers, the connecting cables must have a male XLR connector at the loudspeaker end. See the loudspeaker’s operating manual for the correct type
of cable. When using these loudspeakers with
the 5040B, the Bass Roll-Off switch on the
loudspeakers should be in position “OFF
The 5040B has an integrated crossover
network for the five main channels which
directs the frequencies below 85 Hz to the
subwoofer and higher frequencies through
”
the output connectors to the main loudspeakers. When using a surround sound processor,
select a loudspeaker setting “Large” for the
channels routed through the subwoofer.
The LFE channel of the preamplifier or
processor can be connected to the “LFE IN”
connector. The LFE channel on the 5040B can
reproduce signals up to 120 Hz.
Connect the volume control to the “SYSTEM
VOLUME CONTROL” connector. The volume
control adjusts the playback level of the
subwoofer and all loudspeakers connected to it
Once all connections have been made, the
subwoofer and main loudspeakers are ready
to be powered up.
Positioning in the room
The placement of the subwoofer in the room
affects the overall frequency response and
sound level of the system dramatically, as at
low frequencies the effects of the room are
strong. Even a slight change in the location
of the subwoofer can cause a marked difference in the frequency balance and often
patient and methodical experimentation and
testing is needed to find the optimum placement.
The placement will also affect the bass rolloff rate and the phase difference between the
main loudspeakers and the subwoofer. These
effects can be compensated using the controls in the subwoofer but we recommend that
at first you leave the switches untouched and
concentrate on finding the position where the
subwoofer gives the smoothest response,
and only then use the controls to fine-tune
the balance and phase alignment between
the subwoofer and the main loudspeakers.
Start by placing the subwoofer close to the
center of the front wall. We recommend a distance of less than 60 cm / 24” to the wall. This
position gives increased acoustic loading and
SPL due to the proximity of the front wall and
floor. Cancellations from the front wall and
floor are also avoided. Ideally the subwoofer
and main loudspeakers should be positioned
symmetrically and at an equal distance from
the listening position.
If the frequency balance is not quite right,
try moving the subwoofer to the left or right
along the wall so that different room modes
are excited at different levels. Positioning
the subwoofer close to a corner will boost
the bass level at lower frequencies and may
cause asymmetrical spatial imaging.
Although the 5040B is magnetically
shielded, it may cause colour distortion if
placed near to very sensitive CRT monitors
or computer displays.
ISSTM Autostart function
The signal sensing Autostart function of the
5040B powers it up when playback begins.
Automatic powering down of the subwoofer
happens one hour after the playback has ended and the subwoofer goes to standby mode.
.
The power consumption in standby mode is
less than 0.5 watts. The subwoofer will automatically and rapidly start once an input signal is detected from the source.
Setting the subwoofer level
The subwoofer level control is located on the
connector panel of the subwoofer. The factory
default setting is -6 dB (9 o’clock) from maximum position, which gives a good starting
point for level matching with 6010 loudspeakers. When using the 5040B with Genelec
8020’s or 8030’s there will be a 10 dB difference in sensitivity between the subwoofer
and main loudspeakers which needs to be
addressed by lowering the loudspeakers’
gain by turning the volume control nob on the
loudspeaker’s front panel counterclockwise.
Setting the
Bass Roll-Off switches
The acoustic response of the subwoofer may
have to be matched to the characteristics of
the room and the positioning in which it will be
used. To adjust the subwoofer to match these
characteristics use the ‘’BASS ROLL-OFF’
control switches located on the connector
panel. When all Roll-Off switches are ‘OFF’, a
flat anechoic response is obtained.
Setting the phase control
The effect of incorrect phase alignment
between the main loudspeakers and the
subwoofer is a drop in the frequency
response of the whole system at the main
loudspeaker / subwoofer crossover frequency. The phase difference between the
main loudspeakers and subwoofer at the listening position is dependent upon the position of the subwoofer. To avoid phase differences between the left and right channels
Figure 1. Connectors and controls of the 5040B.
Maintenance
There are no user serviceable parts inside
the subwoofer. Any maintenance of the unit
must only be performed by qualified service
personnel.
Guarantee
This product is supplied with two year guarantee against manufacturing faults or defects that
might alter the performance of the unit. Refer
to supplier for full sales and guarantee terms.
Compliance to FCC rules
This device complies with part 15 of the FCC
Rules. Operation is subject to the following
two conditions:
This device may not cause harmful interference, and This device must accept any interference received, including interference that
may cause undesired operation.
and the subwoofer, the subwoofer should be
placed close to the center of the front loudspeaker array.
Two phase matching switches in the
crossover allow compensation for incorrect
phase alignment. Four settings are provided
between 0° and -270°.
Coarse phase
correction method
Connect an audio frequency signal generator
to a signal input on the subwoofer which has
a main loudspeaker connected to the corresponding “OUT” connector. Set the generator
to 85 Hz. If a signal generator is not available,
then it is possible to use an audio test recording which has a test frequency in the range
70 Hz to 100 Hz. Suitable test signals can be
downloaded at www.genelec.com.
• Togglethe-180°phase
switch ‘ON’ and ‘OFF’ and
set it to the position which
gives the lowest sound level
at the listening position.
• Nexttogglethe-90°phase
switch ‘ON’ and ‘OFF’, and
again set it to the position
which gives the lowest
sound level.
• Finally,setthe-180°phase
switch to the opposite
setting.
Automatic protection circuits
The 5040B is equipped with protection circuits against loudspeaker driver thermal
overload and amplifier overheating. The protection system resets automatically so that
the user only has to turn the input level down
to ensure that it does not reactivate.
Safety considerations
The Genelec 5040B complies with international safety standards. However, to ensure
safe operation and maintain the equipment in
safe operating condition the following warnings and cautions must be observed.
• Servicingandadjustmentmustonlybe
performed by qualified service personnel.
• Openingtheamplierpanelisstrictly
prohibited except by qualified service
personnel.
• Donotexposethesubwoofertowateror
moisture.Donotplaceanyobjectslled
with liquid, such as vases on the
subwoofer or near it.
• Notethattheamplierisnotcompletely
disconnected from the AC mains service
unless the mains cable is removed from
the amplifier or the mains outlet.
Warning!
This equipment is capable of delivering sound
pressure levels in excess of 85 dB, which
may cause permanent hearing damage.
Note: This equipment has been tested and
found to comply with the limits for a Class
B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This
equipment generates, uses and can radiate
radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no
guarantee that interference will not occur in a
particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is
encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving
antenna.
• Increase the separation between the
equipment and receiver.
• Connect the equipment into an outlet
on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced
radio/TV technician for help.
Modifications not expressly approved by the
manufacturer could void the user’s authority
to operate the equipment under FCC rules.
SYSTEM SPECIFICATIONS
5040B
Free field frequency response (± 3 dB) Main 35 Hz...85 Hz
Maximum short term sine wave SPL output
averaged from 40 to 85 Hz, measured in half
space at 1 meter
Self generated noise level in half space at 1 m
on axis (A-weighted)
Driver,magneticallyshielded 165 mm (61/2")
Weight 6.3 kg (13.9 lb)
Dimensions
Height
Diameter
LFE 35 Hz...120 Hz
98 dB
≤ 15 dB SPL
251 mm (97/8”)
305 mm (12”)
CONNECTORS
5040B
Main channels IN/OUT, LFE channel IN unbalanced female RCA connectors
Pin
Ring
Stereo IN 3.5 mm Jack female connector
Sleeve
Tip
Ring
Input impedance 10 kOhm balanced
Main channel OUT gain referred to IN 0 dB
+
gnd
gnd
Left channel
Right channel
AMPLIFIER SECTION
5040B
Amplifier short term output power
(Long term output power is limited by driver
unit protection circuitry)
AmpliersystemTHDatnominaloutput ≤ 0.05 %
Mains voltage Fixed 100, 120 or 230 V
Power consumption (average)
Standby
Idle
Full output
40 W
<0.5 W
7 W
70 W
CROSSOVER SECTION
5040B
Subsonic filter (18 dB/octave) below 35 Hz
Crossover frequency
(subwoofer/main channels)
LFE channel cutoff frequency 120 Hz
Midband rejection >400 Hz >50 dB
Input level for 90 dB SPL output at 1 m -9 dBu at level control max
Sensitivity adjustment range 18 dB
Bass Roll-Off control operating range
in 2 dB steps
Phase matching control in 90° steps From 0 to -270° @ 85 Hz
85 Hz
From 0 to -6 dB @ 35 Hz
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