Genelec G One, G Two Operating Manual

G One & G Two

Operating Manual
Käyttöohje

Operating Manual

G One and G Two

Active Loudspeakers

General description

Genelec G One and G Two are compact two way
active loudspeakers designed to designed to pro­duce broad bandwidth sound with high output and
low coloration.

Positioning the loudspeaker

Each loudspeaker is supplied with an built-in ampli­fier unit, signal cables, 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 to the central line of the room and
the loudspeakers at equal distance from the walls.

2 English

Connections

Before connecting up, ensure that the power switch
on the signal source is set to OFF.

Audio input is via an unbalanced RCA connec­tor. Only line level audio signal from a preamplifier,
computer sound card or similar signal source can
be connected, never a high power signal from the
speaker terminals of a power amplifier. Once the
connections have been made, the loudspeakers
are ready to be switched on.

Autostart function

The signal sensing Autostart function of the loud­speakers powers them up when playback begins.

WARNING

ELECTRICSHOCK HAZARD.DONOT OPEN.DONOT SUBJECT
TOWATER ORMOISTURE. NOUSER SERVICEABLEPARTS
INSIDE.REFER SERVICINGTO QUALIFIEDPERSONNEL.
USEEARTHED MAINSCONNECTION ONLY.

AVERTISSEMENT

RISQUEDE CHOCÉLECTRIQUE. NEPASOUVRIR.NE PAS
EXPOSERÀL'EAUOUL'HUMIDITÉ. AUCUNCOMPOSANT À
L'INTÉRIEURREMPLAÇABLE PARL'UTILISATEUR.ADRESSER
TOUTERÉPARATIONÀUNPERSONNEL QUALIFIÉ.CET
APPAREILDOITÊTRERACCORDÉÀLA TERRE.

REFLEX PORT

THREADS FOR
CEILING AND
WALL MOUNTS

292-8030W

1

0

ON OFF

LEDOFF
TABLETOP
BASS-2 dB

-4dB

-6dB

INPUT

292-6020BT-6

GTwo

Active Loudspeaker

MAINSINPUT
50/60Hz50W 230V~

MADEIN FINLAND
www.genelec.com

SERIALNUMBER

Figure 1. Control and connector layout on the rear panel of a G Two.

TONE CONTROLS

CONNECTOR PANEL
(HORIZONTAL)

Iso-Pod™TABLE
STAND

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Loudspeaker Mounting Position Tabletop Bass

Flat anechoic response

Free standing in a damped room

Free standing in a reverberant room

Near to a wall

Near field on a reflective surface

In a corner or a cabinet

Table 1: Suggested tone control settings for different acoustical environments

OFF OFF

OFF OFF

OFF -2 dB

OFF -6 dB

ON (-4 dB @ 200 Hz) -2 dB

OFF -6 dB

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.

Switching off the power indica­tor LED (G Two only)

The power indicator LED of the G Two can be
switched off by turning the “LED OFF” switch on
the back panel to “1”.

Setting the tone controls

The frequency response of Genelec G One and G
Two can be adjusted to match the acoustic envi­ronment by setting the tone control switches on the
rear panel. The controls are “Tabletop” and “Bass”.
Table 1 shows some typical settings in various
situations. Figures 2 and 3 show the effect of the
controls on the frequency response.

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Tabletop

This switch is recommended to be switched to “1”
when the loudspeakers are placed on a table or
similar surface, such that there is a reflective surface
between the loudspeaker and the listener. Such a
placement typically causes a boost at certain bass
frequencies, which the “Tabletop” function is de­signed to compensate for.

Bass

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

-2 dB, -4 dB and -6 dB. The -6 dB attenuation is se­lected by setting both “Bass” switches to “1”.

The factory setting for all tone controls is “0” to
give a flat anechoic frequency response. Always
start adjustment by setting all switches to “0” posi­tion. Measure or listen systematically through the
different combinations of settings to find 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 between the drivers around the
crossover frequency.

Maintain symmetry

Check that the loudspeakers are placed symmetri­cally and at an equal distance from the listening
position. If possible, place the system so that the
listening position is on the centerline of the room
but not exactly at the center of the room. Place the
loudspeakers are at an equal distance from the
centerline and also at an equal distance from the
listening position.

Minimize reflections

Acoustic reflections from objects close to the loud­speakers like desks, cabinets, computer monitors
etc. can cause unwanted blurring of the sound im­age and also cause frequency response problems.
These can be minimized by placing the loudspeak­er clear of any hard surfaces.

Minimum clearances

Sufficient cooling for the amplifier and function­ing of the reflex 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”) behind, above and on both sides
of the loudspeaker. The space adjacent to the am­plifier must either be ventilated or sufficiently large
to dissipate heat so that the ambient temperature
does not rise above 35 degrees Celsius (95°F).

Mounting options

The G One and G Two offer several mounting op­tions: The Iso-Pod™ (Isolation Positioner/Decou­pler™) vibration insulating table stand allows tilting
the loudspeaker for correct vertical alignment. On the
base of the loudspeaker is a 3/8” UNC threaded hole
compatible with a standard microphone stand. On
the rear there are threaded holes for Omnimount®
brackets. G One also has threaded holes for Sanus
and VESA brackets.

Maintenance

No user serviceable parts are to be found within the
amplifier unit. Any maintenance or repair of the unit
should only be undertaken by qualified service per­sonnel.

Safety considerations

Although the G One and G Two 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 qualified service personnel.

• The loudspeaker must not be opened.

• 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 producing sound
pressure levels in excess of 85dB, which may
cause permanent hearing damage.

• Free flow of air behind the loudspeaker is
necessary to maintain sufficient cooling. Do not
obstruct airflow around the loudspeaker.

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