1. Exceeding the maximum input of the
analog input
2. Reaching close to the digital input
maximum (high likelihood of digital
clipping)
3. Overload of drivers or amplifier, or
clipping in the power amplifier
4. An error detected in the AES/EBU
audio data
If a red warning light appears on the monitor
enclosure, turn the source level down.
Ensure that there are no bit errors in the
AES/EBU digital audio data transmission.
Flush Mounting the
Monitor Enclosure
Flush mounting offers acoustical benefits.
No cabinet edge diffraction will occur. Low
frequency reflections from the wall behind
the monitor can be avoided. The monitor’s
acoustical axis (Figure 1) should point to
the seated listening position. The wall in
which the monitors are mounted should be
stiff and heavy. The monitors should not be
mounted too high (maximum tilt angle < 15
degrees).
A space 50 to 100 mm (2 to 4 in) wide
can be left around the monitor but this
space should be covered with a panel in
the front. Leave a gap of 5 to 10 mm (¼ to
½ in) between the monitor and the panel. Fill
this gap with a soft rubber gasket (see figure
14). The monitor should be mounted on
vibration isolators. The resonant frequency
of movement for the mounted monitor
should be between 2 to 8 Hz.
An empty cavity in the wall should be
filled with absorbent mineral wool or foam
plastic. A wooden wall structure must be
heavily braced (see figure 11). In a solid
(e.g. concrete) wall structure, the space
around the cabinet should be filled with
absorbent mineral wool or sand bags (see
Figure 12).
Ensure that the cabinet is flush with the
surface of the wall. If a decorative cloth
frame is used the edges adjacent to the
monitors must be less than 20 mm (3/4
in) deep. The cloth must be acoustically
transparent. Genelec-approved cloth
grilles are available.
Figure 6. Flush mounting the speaker in
a wall constructed of wood
Figure 7. Flush mounting the speaker in
a wall constructed of concrete
Figure 8. Flush mounting the speaker
in a wall constructed of a combination
of materials.
CONCRETE
STRUCTURE
VIBRATION
ISOLATORS
f ~ 2-8 Hz
MULTI-LAYERED WALL
(WOOD, CONCRETE, BRICKS)
VIBRATION
ISOLATORS
f ~ 2-8 Hz
CONCRETE WALL
SAND
BAGS
VIBRATION
ISOLATORS
f ~ 2-8 Hz
HEAVY WOODEN WALL
ABSORBING
MATERIAL
RAM-L Amplifier
Power Button
The power button in the middle of the
RAM-L amplifier front panel controls several
functions.
A short press of the power button turns
RAM-L on or off. Turning on, the power
button light flashes rapidly, and lights
on steadily when the turn-on has been
completed.
Testing modes are explained later in this
manual.
Setting ISS™
The Intelligent Signal Sensing™ (ISS™)
puts the monitor to a power-saving
stand-by mode automatically. The factory
setting for ISS is "OFF." The ISS can be
activated using the GLM software (see
Figure 5). When ISS is active, if no audio
signal is sensed during the selected time,
the monitor powers down. The monitor will
power up again once a signal is detected.
The ISS setting is applied to all ISS-enabled
monitors in the currently selected Setup.
Front Panel Light Functions
The green light on the DCW of a 1238AC
enclosure indicates normal operation. A
yellow light indicates certain activities when
the GLM control software is used. The light
turns red in an overload condition. The
overload light is activated by several events:
FACING PANEL
FIXED TO THE WALL
(50-100 mm / 2-4")
RUBBER GASKET
(5-10 mm / ¼-½")
SPEAKER
WALL
Figure 9. Covering the gap between
the wall and the monitor enclosure.
