Figure 6. Installing the RAM2 amplifier
module to the optional RM2 rack mount
adapter.
Figure 5. Installing the metal support to
the RAM2 amplifier module for placement
on a solid aurface.
sheetrock. Also note that the enclosure flange
is wider and taller than the hole and requires
about 20 millimeters (3/4”) of smooth wall sur-
face around all sides of the hole.
When you have found a good location,
check that the template is level and trace the
hole onto the wall with a pencil along the out-
line of the template. If you are not sure that the
chosen part of wall is free from obstructions,
you can start by making a smaller hole at the
center of the marked area through which you
can probe the inside of the wall. Use a dry-
wall saw and make the first cut at a 45° angle
toward the center of the hole so you can put
the cut piece back in if the location is unsuita-
ble. If you find no obstructions, you can make
the final cut along the marked lines.
If you have already connected the RAM2
amplifier units to the decoder or other signal
source, select the loudspeaker enclosure that
has the same ID number as the amplifier it will
be driven by. Connect the loudspeaker cables
as described above in chapter “Cabling”.
Lift the AIW25 enclosure into the hole and
turn the Phillips 2 screws in each corner of
the front baffle clockwise so that the mount-
ing tabs rotate outwards. Continue tighten-
ing the screws until the sheetrock is firmly
clamped between the mounting tabs and the
enclosure flange. If necessary, a secondary
support line can be attached to the tab on the
top side of the enclosure.
Connecting the RAM2
amplifier
The RAM2 amplifier is designed to be con-
nected to a line level output of a preamplifier,
Surround Sound processor or other low level
source. NOTE! Never connect the RAM2 to a
loudspeaker level output of a power amplifier!
Check that the amplifier’s serial number
matches that of the AIW25 loudspeaker
enclosure which it will power. If the loud-
speaker enclosures are not yet installed,
make a note of which amplifier is connected
to each channel so you can find the correct
AIW25 loudspeaker cabinet for every ampli-
fier. Connect the 12 V remote control cables
and loudspeaker cables as described above
in chapter “Cabling”.
The RAM2 has two parallel 10 kOhm input
connectors: a balanced female XLR and an
unbalanced RCA. There is also a male XLR
connector that can be used for daisy-chain-
ing several systems together. For long cable
connection lengths (>10 m or >30 ft) a bal-
anced line connection is recommended as
it offers better immunity to external interfer-
ence. However, the RCA connection method
is more commonly available and usually
works as well for shorter connection lengths
in less electrically noisy environments. Do
not use both inputs at the same time. Consult
your Genelec dealer for the choice of signal
cables.
Space requirement for the
RAM2 amplifier
The dual 40 W power amplifiers of a RAM2
unit generate a considerable amount of heat
when used at full power. To avoid overheat-
ing, ensure that there is good airflow around
the amplifier and no external heat sources
close to it. We recommend installing the
RAM2 into a well ventilated equipment rack
using its dedicated RM2 rack mount kit which
allows airflow through the ventilation holes
on the bottom and top of the amplifier box.
The amplifier must always be installed in an
upright position, never flat on its side.
Sufficient cooling for the amplifier must be
arranged at all times. As a general rule, the
ambient temperature around the amplifier
must not exceed 35 degrees Celsius (95°F).
The ventilation openings on the amplifier
box must not be blocked and a free space of
1 U (=1.75" or 45 mm) must be left above the
amplifier when installed. This space must be
sufficiently ventilated to maintain the temper-
ature below the aforementioned maximum
level.
If the RAM2 amplifier is placed on a
shelf or other solid surface, the metal sup-
port provided with the amplifier must be
attached to the lower part of the amplifier
front panel with an M4 screw. This improves
the stability of the amplifier and provides
sufficient clearance for air circulation below
the amplifier.
Mounting the RAM2 amplifier
to an equipment rack
We recommend that you use the Genelec
RM2 rack mount adapter when installing the
RAM2 amplifier in an equipment rack. Make
sure that the space above and below the
RAM2 is uncluttered and there is a space
of 100 mm (4”) or more behind the ampli-
fier. The space behind the amplifier must be
well ventilated. If the temperature inside the
rack is likely to rise close to RAM2’s maxi-
mum ambient temperature of 35° C (95° F),
we recommend installing ventilation fans to
ensure that the thermal protection is not acti-
vated prematurely.
Attach the RAM2 to the RM2 rack mount
with two M4 screws provided with the rack
mount kit. The screws go through the holes
on the front panel of the amplifier. Each RM2
can take eight RAM2 amplifiers. Blanking
plates are provided to cover empty spaces in
the rack if fewer RAM2’s are installed.
Setting the input sensitivity
The input sensitivity of each loudspeaker
can be made to match that of the decoder
or other source by use of the input sensitiv-
ity control on the amplifier’s front panel. A
small screwdriver is needed for the adjust-
ment. The manufacturer default setting for
this control is -6 dBu (fully clockwise) which
gives SPL of 100 dB @1m with -6 dBu input
level. Note that to get the full output level of
100 dB SPL per unit, an input level of +4
dBu (1.22 V) is needed in this setting. Most
pre-amplifiers are capable of this output
level.
