Genelec G Four, G Five Operating Manual

Operating Manual
Käyttöohje

G Three
G Four
G Five

General description

Genelec G Three, G Four and G Five are two
way active loudspeakers designed to produce
broad bandwidth sound with high output and
low coloration.

Positioning the loudspeaker

Each loudspeaker is supplied with a
built-in amplifier unit, mains cable and an
operating manual. After unpacking, place
the loudspeakers in their required listening
positions, pointing them to the center of the
listening area. If possible, place the listening
position along the middle axis of the room and
the loudspeakers at equal distance from the
side walls.

Connections

Before connecting up, ensure that the power
switches on the loudspeakers and the signal
source are set to OFF. The power switch is
located on the back panel of the loudspeaker.
Do not connect the loudspeaker to an
unearthed mains supply or using an unearthed
mains cable.

Audio input is via a 10 kOhm balanced
female XLR connector or unbalanced RCA
connector. Only line level audio signal from a

preamplier, computer sound card or similar

signal source can be connected, never a high
power signal from the speaker terminals of a

power amplier. It is possible to connect two

audio sources to the loudspeakers at the same
time using both connectors, as long as only
one source is used at a time.

Once the connections have been made, the
loudspeakers are ready to be switched on.

ISS Autostart function

Genelec G Three, G Four and G Five a have
a power switch on the back panel. Set this
switch to “OFF” when the loudspeakers are left
unused for several days or when connecting or
disconnecting any cables in the system.

When the switch is set to “ON”, the
signal sensing ISS Autostart function of the
loudspeakers powers them up when playback
begins. Automatic powering down of the
loudspeakers happens one hour after the
playback has ended and the loudspeakers

go to standby mode. The power consumption
in standby mode is less than 0.5 watts. The
loudspeaker will automatically and rapidly
start once an input signal is detected from the
source.

Model G Three has a switch that can be

used to activate or deactivate the ISS function.

Setting the playback level

The playback level of the loudspeakers has
two basic settings, normal and +10 dB on the
G Four and Five and normal and -10 dB on G
Three. The normal setting is factory default and
the +10 or -10 dB setting can be selected by
turning the corresponding switch on the back
panel to “ON”. This adjustment is used for
matching the loudspeaker to the signal source
so that it plays at a convenient volume.

Switching off the power

indicator LED

The power indicator LED can be switched o

by turning the “LED OFF” switch on the back
panel to “ON”.

Setting the tone controls

The frequency response of Genelec G Three,
G Four and G Five can be adjusted to match
the acoustic environment by setting the tone
control switches on the rear panel. The controls
are “Tabletop”, “Treble”, “Bass” and “Low
Bass”. Table 1 shows some typical settings
in various situations. Figures 3, 5 and 7 show
the effect of the controls on the frequency
response.

Tabletop

It is recommended to activate this switch to

‘ON’ when the loudspeakers are placed on a
table, desk or similar surface to minimise the

eect of such reective surfaces between the

loudspeakers and the listener.

Such a placement typically causes a
boost in one region of the bass spectrum.
The “Tabletop” control compensates for this
unwanted sound colouration.

Treble

The “Treble” adjustment allows modifying the
high frequency response of the loudspeaker.
The G Three has one setting, -2 dB for

smoothening down an excessively bright
sounding system, the G Four and G Five
provide two attenuation levels, -2 dB and -4
dB and one boost setting, +2 dB.

Bass

The “Bass” control offers three attenuation
levels for the bass response in frequencies
below 1 kHz, usually necessary when the
loudspeakers are placed near room boundaries
or other situations when the bass sounds too
dominant. The attenuation levels are -2 dB,

-4 dB and -6 dB. On the G Three, the -6 dB
attenuation is selected by setting both “Bass”
switches to “ON”.

Low Bass

The Low Bass control provides bass
attenuation at the lowest frequencies of the
loudspeaker’s bass reproduction. This may
be necessary if these deep bass frequencies
sound disproportionally strong. The G Three
has one setting, -4 dB and the G Four and G
Five provide three attenuation levels: -2 dB, -4
dB and -6 dB.

The factory setting for all tone controls
is “0” to give a flat anechoic frequency
response. Always start adjustment by setting
all switches to “OFF” position. Measure or
listen systematically through the different

combinations of settings to nd the best tonal

balance.

Mounting considerations

Align the loudspeakers correctly

Always place the loudspeakers so that they are
aimed towards the listening position. Vertical
placement is preferable, as it minimizes
acoustical cancellation problems around the
crossover frequency.

Maintain symmetry

Check that the loudspeakers are placed
symmetrically, and at an equal distance
from nearby walls. The distance between
the listening position and each loudspeaker
should also be identical. If possible, place the
system so that the listening position is on the
centerline of the room but not in the middle of
the front-back room dimension.

Minimize reflections

Acoustic reections from objects close to the

loudspeakers like desks, cabinets, shelves,
computer monitors etc. can cause unwanted
blurring of the sound image. These can be

Table 1. Suggested tone control settings in some typical situations

Loudspeaker Mounting Position Treble Bass Low Bass Tabletop

Flat anechoic response None None None None

Free standing in a damped room None -2 dB None None

Free standing in a reverberant room None -4 dB None None

Near the listener on a table or other

reective surface

None -2 dB None

ON (-4 dB @

160/200 Hz)

In a corner None -4 dB -4 dB None

Figure 1. The back panel layout of the G Three

MADEIN FINLAND

SERIALNUMBER

Thisdevice complieswithFCC Part15andCanadian
ICES-003radio frequencyClassBemissionrequirements.
Refertooperatingmanualfor fullinformation.

292-G3BT

MAINS INPUT

50/60Hz60W

100-240 V~

www.genelec.com

RCAINPUT

XLRINPUT

ON

OFF

LOWBASS -4dB

TABLETOP

TREBLE-2 dB

BASS

-4dB

-2dB

-6dB

G Three

Active Loudspeaker

ISS

LEDOFF

LEVEL-10dB

292-8030W

AVERTISSEMENT:RISQUEDECHOC ÉLECTRIQUE.NEPAS
OUVRIR.NE PASEXPOSERÀL'EAUOU L'HUMIDITÉ.AUCUN
COMPOSANTÀL'INTÉRIEURREMPLAÇABLE PARL'UTILISATEUR.
ADRESSERTOUTE RÉPARATIONÀUNPERSONNELQUALIFIÉ.
CETAPPAREILDOITÊTRE RACCORDÉÀLATERRE.
LAITEON LIITETTÄVÄSUOJAKOSKETTIMILLAVARUSTETTUUN
PISTORASIAAN.
APPARATETMÅTILKOPLES JORDETSTIKKONTAKT.
APPARATENSKALLANSLUTAS TILLJORDATUTTAG.

WARNING:ELECTRIC SHOCKHAZARD.DONOTOPEN. DONOT
SUBJECTTO WATERORMOISTURE. NOUSERSERVICEABLE
PARTSINSIDE.REFERSERVICING TOQUALIFIEDPERSONNEL.
USEEARTHED MAINSCONNECTION ONLY.

REFLEX PORT

THREADS FOR
CEILING AND
WALL MOUNTS

TONE CONTROLS

CONNECTOR P

ANEL

(HORIZONTAL)

Iso-Pod™TABLE
STAND

minimized by placing the loudspeaker clear of

reective surfaces.

Minimum clearances

Sufficient cooling for the amplifier and

functioning of the reex 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
listening room with a minimum clearance of 5
centimeters (2 in) behind, above and on both
sides of the loudspeaker. The space adjacent

to the amplier must either be ventilated or

suciently large to dissipate heat so that the

ambient temperature does not rise above 35
degrees Celsius (95°F).

Mounting options

G Three, G Four and G Five offer several
mounting options: The Iso-Pod™ (Isolation
Positioner/Decoupler™) vibration insulating
table stand allows tilting the loudspeaker for
correct vertical alignment. There are three
mounting points for the Iso-Pod™ on the back
of the loudspeaker cabinet allowing vertical
and symmetrical horizontal positioning. On
the base of the loudspeaker is a 3/8” UNC
(M10 on the G Four and G Five) threaded hole
compatible with a standard microphone stand.
On the rear there are two sets of threaded holes
for Omnimount® and König & Meyer brackets.

Maintenance

No user serviceable parts are to be found

within the amplier unit. Any maintenance or

repair of the unit should only be undertaken by

qualied service personnel.

Safety considerations

Although these products have been designed
in accordance with international safety
standards, 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 qualied 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 compromise
electrical safety.

• Do not expose the loudspeaker to water
or moisture. Do not place any objects

lled with liquid, such as vases on the

loudspeaker or near it.

• This loudspeaker is capable of producing
sound pressure levels in excess of 85
dB, which may cause permanent hearing
damage.

• Free ow of air behind the loudspeaker is

necessary to maintain sucient cooling. Do

not obstruct airow 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 amplier or the mains outlet.

WARNING!
This equipment is capable of producing sound
pressure levels in excess of 85 dB, which may
cause permanent hearing damage.

Compliance to FCC rules

This device complies with part 15 of the FCC
Rules. Operation is subject to the following
conditions:

• This device may not cause harmful
interference, and

• This device must accept any interference
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 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 dierent from that to which the

receiver is connected.

• Consult the dealer or an experienced
radio/TV technician for help.

Modications not expressly approved by the

manufacturer could void the user’s authority to
operate the equipment under FCC rules.

Guarantee

This product is guaranteed for a period
of two years against faults in materials or
workmanship. Refer to supplier for full sales
and guarantee terms.