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 the “CENTER IN” input of the subwoofer
and 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.
Make sure you connect (even temporarily)
a main loudspeaker to the " CENTER OUT"
output, so that the test signal is properly
reproduced by both subwoofer and main
loudspeaker.
• 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.
Using multiple subwoofers
The 5050A is equipped with a “LINK OUT”
connector to provide an easy way of coupling
two or more subwoofers together in high SPL
applications. Connect an RCA cable from
the “LINK OUT” connector of the “master”
subwoofer to which the decoder is connected,
to the RCA “LFE IN/LINK IN” input connector
of the other, “slave” subwoofer. Set the “LINK
IN MODE” switch on the “slave” subwoofer to
“ON”. Do not connect the link signal cable to
the main channel inputs.
When two subwoofers connected in this
way are positioned close to one another,
bass level increases by 6 dB. Three subwoof-
ers give a bass SPL increase of 9,5 dB and
four subwoofers 12 dB compared to a single
subwoofer. Adjust the sensitivity control of all
subwoofers in the group to match the SPL
level of the main monitor system. Note that
the sensitivity setting must be the same on
all subwoofers.
Autostart function
The 5050A is equipped with an
“AUTOSTART” function, which automatically
turns the amplifier to “STANDBY” mode if
an input signal has not been detected for
approximately 30 minutes, and back to
“ON” mode when the signal returns. The
function can be deactivated by turning the
“AUTOSTART” dip switch to “OFF”. A two-
colour LED on the amplifier panel indicates
the amplifier status: green for “ON” and
yellow for “STANDBY”.
Automatic protection circuits
The 5050A 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
Genelec 5050A 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.
• 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.
• Always use a mains power cable and
connection with protective earth. Failing to
do this may lead to personal injury.
• 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 person-
nel.
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.
Figure 1. Connectors and controls of the 5050A.
