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2.4 FLUSH MOUNTING OF THE
SPEAKER
Although the 1034B may be used suc-
cessfully as a free standing speaker, flush
mounting is strongly recommended for
acoustical reasons. Flush mounting im-
proves the bass response and efficiency
and also enhances the midrange tran-
sient and frequency response.
The speaker has its acoustical axis mid-
way between the midrange and treble
drivers. This axis should be used as the
listening and measuring axis of the sys-
tem. (See Fig 2.1 and Fig 2.2)
The listening position should be between
2 ... 3.5m (6½ ... 11½') from the speakers.
The speaker should be aimed so that the
Fig 3. Speaker mounting.
Fig 3. Speaker mounting.
Fig 3. Speaker mounting.
Fig 3. Speaker mounting.
Fig 3. Speaker mounting.
Side view (top), Plan view (bottom).
Side view (top), Plan view (bottom).
Side view (top), Plan view (bottom).
Side view (top), Plan view (bottom).
Side view (top), Plan view (bottom).
Fig 5. Eliminating discontinuities.
Fig 5. Eliminating discontinuities.
Fig 5. Eliminating discontinuities.
Fig 5. Eliminating discontinuities.
Fig 5. Eliminating discontinuities.
vertical acoustical axis of the two speak-
ers meet midway between the standing
and seated listening position (1.4m - 4'7"
from the floor). This allows the correct
frequency response to be received by a
standing or seated person. The speakers
should not be mounted too high as this
increases the required vertical tilt of the
speaker and reduces the optimum listen-
ing area.
The ceiling, side walls and especially the
rear wall should be acoustically absor-
bent at low frequencies. The speaker
mounting wall should be acoustically hard
and therefore reflective. The speaker
mounting wall should be angled so that
the speakers are correctly aimed. Great
care should be taken over how the
speaker is mounted into the wall.
Fig 4. Speaker mounting details.
Fig 4. Speaker mounting details.
Fig 4. Speaker mounting details.
Fig 4. Speaker mounting details.
Fig 4. Speaker mounting details.
Fig 6. Recess for loudspeaker connec-
Fig 6. Recess for loudspeaker connec-
Fig 6. Recess for loudspeaker connec-
Fig 6. Recess for loudspeaker connec-
Fig 6. Recess for loudspeaker connec-
tors. (Front view)
tors. (Front view)
tors. (Front view)
tors. (Front view)
tors. (Front view)
Note the following:
• A space 50...100 mm (2..4") wide can
be left around the speaker.
• Cover the space around the speaker
with a facing panel, this should be fixed to
the wall. Leave a gap of about 5..10 mm
(¼..½") between the speaker and the
panel. Fill this gap with a soft rubber
gasket to allow for possible cabinet move-
ment.
• Ensure that the speaker cables can
reach the rear of the speakers.
• If a light (e.g. wooden) wall is used, the
speaker cabinet should be mounted on
vibration isolators, with a resonant fre-
quency of around 2...8Hz, to prevent
vibrations from being transmitted to the
wall and impairing the low frequency
performance. The space around the
cabinet should be filled with absorbent
mineral wool or foam plastic. The walls
must be well braced.
• For a solid wall (e.g. concrete), the
speaker may be directly mounted to the
wall without vibration isolators. The space
around the cabinet should be filled with
mineral wool or sand bags.
Discontinuities in the speaker mounting
wall will cause diffraction, which leads to
inferior frequency response and stereo
imagery, so:
• Ensure that the cabinet is flush with the
surface of the wall.
• If a decorative cloth frame is used to
cover the wall, make sure that the edges
adjacent to the speaker are less than 20
3
mm (
/
) deep. The cloth must be very
4"
thin Tricot or acoustically transparent
material, otherwise the high frequency
response of the system will be adversely
affected. GENELEC approved cloth
grilles are available.
2.5 RECESS FOR LOUDSPEAKER
CONNECTORS
The speaker connector cable extends
100 mm (4") from the rear panel of the
loudspeaker. Therefore, a space at least
100 mm (4") deep must exist to allow for
the cable behind the loudspeaker. The
dimensions of the recess should be at
least 100x140x75 mm (4"x5
shown in Fig. 6. Note that the connectors
are positioned off-centre. Therefore, if the
loudspeaker is rotated for a left and right
channel, the recess will be at different
heights on the left and right side. This
occurs when the speakers are mounted in
the horizontal configuration.
1
/
"x3"), as
2
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