Genelec 5040B, Руководство по эксплуатации, Страница: 3 / 12

and the subwoofer, the subwoofer should be
placed close to the center of the front loud-
speaker 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 corre-
sponding “OUT” connector. Set the generator
to 85 Hz. If a signal generator is not available,
then it is possible to use an audio test record-
ing which has a test frequency in the range
70 Hz to 100 Hz. Suitable test signals can be
downloaded at www.genelec.com.
• Toggle the -180° phase
switch ‘ON’ and ‘OFF’ and
set it to the position which
gives the lowest sound level
at the listening position.
• Next toggle the -90°phase
switch ‘ON’ and ‘OFF’, and
again set it to the position
which gives the lowest
sound level.
• Finally, set the -180°phase
switch to the opposite
setting.
Automatic protection circuits
The 5040B is equipped with protection cir-
cuits against loudspeaker driver thermal
overload and amplifier overheating. The pro-
tection 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 interna-
tional safety standards. However, to ensure
safe operation and maintain the equipment in
safe operating condition the following warn-
ings and cautions must be observed.
• Servicing and adjustment must only be
performed by qualified service personnel.
• Opening the amplifier panel is strictly
prohibited except by qualified service
personnel.
• Do not expose the subwoofer to water or
moisture. Do not place any objects filled
with liquid, such as vases on the
subwoofer or near it.
• Note that the amplifier is not completely
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.
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 guaran-
tee 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 interfer-
ence, and This device must accept any inter-
ference received, including interference that
may cause undesired operation.
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 pro-
vide 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 instruc-
tions, 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 televi-
sion 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.
Figure 1. Connectors and controls of the 5040B.