Genelec AIW25 Active In-Wall Loudspeaker Operating Manual

Operating Manual
Genelec AIW25
Active In-Wall Loudspeaker
Genelec AIW25 Active In-Wall Loudspeaker
The Genelec AIW25 Active In-Wall loudspeaker system consists of a two-way
loudspeaker enclosure and a matched
remote amplifier module, RAM2. It has been
designed to the same rigorous standards as
Genelec’s high-performance HT series active
Home Theater loudspeakers. No other inwall loudspeaker in this size class can match
the low distortion, neutrality and high sound
pressure capability of Genelec AIW25. The
AIW25 can be used in the most demanding
applications, like the main L-C-R array of a
Home Theater system, critical Stereo listening or rear/side channels of a medium sized,
state-of-the-art Home Theater.
A Genelec AIW25 set includes the following
items. Check that nothing is missing or damaged in transit. If there is a problem with the
product, contact your local Genelec dealer.
AIW25 loudspeaker enclosure.
Grill insert
AIW25 cardboard cut-out template
Loudspeaker painting mask
RAM2 amplifier unit
Mains power cable
Two M4 Phillips 2 screws
This Operating Manual
Genelec recommends that you use the services of an authorized installation specialist or other competent and experienced
installation company for the installation of
the AIW25 system. Ask your local Genelec
dealer for recommended installation companies in your region.
Matching loudspeakers and
Each AIW25 loudspeaker has been factory
calibrated for optimum performance with the
RAM2 amplifier it is shipped with. Never mix
these matched amplifier-loudspeaker systems in the installation process. The matching
units are marked with the same ID number.
Loudspeaker placement
Genelec AIW25 loudspeakers are equipped
with Genelec’s proprietary Directivity Control Waveguide™ (DCW™). One of the main
characteristics of the DCW™ technology is
that the loudspeakers give a very even and
consistent frequency response over a large
listening area. A secondary function of the
DCW™ is to reduce the off-axis radiated
sound energy, thereby minimizing the reflections from the side walls, floor and ceiling.
This results in a precise and stable sound
If the AIW25 loudspeakers are used in an
application where their capability for precise
sound imaging is needed, such as the front
channels of a Surround Sound system or a
Stereo system, we recommend that the loudspeakers are placed as far away from corners or other walls and reflective surfaces as
possible. The loudspeakers should be placed
symmetrically in relation to the listening position and there should be no obstructions
between the loudspeaker and the listener.
This guarantees clear dialogue in films and a
good sound stage image with music. Figure
2 shows a Left-Center-Right arrangement
that works well both as Surround Sound front
channels and a Stereo pair.
If you prefer a diffuse sound field, which
is less critical to the listening position and
gives only a vague sense of direction, for
instance in a rear/side channel setup in a
Home Theater system, you may actually
benefit from the acoustical reflections from
nearby boundaries. In this case, place the
loudspeakers close to the ceiling or another
wall, or have them face away from the listening position, so that the proportion of
reflected sound increases.
Figure 3. Connecting the loudspeaker cable
Figure 1. RAM2 amplifier back panel view
Cable gauge
Max. length
2,0 mm2 (14 AWG)
30 m (100 ft)
3,3 mm2 (12 AWG)
40 m (130 ft)
5,3 mm2 (10 AWG)
60 m (200 ft)
Table 1. Recommended cable thicknesses for
different lengths of cable
Figure 2. Front loudspeaker placement
The RAM2 amplifier unit has separate
power amplifiers for the tweeter and woofer.
Accordingly, a 4-conductor cable needs to
be run between the amplifier and the loudspeaker enclosure. Two cable connectors
are supplied with the loudspeaker system,
a six-pole connector to fit the connector on
the amplifier and a four-pole connector to fit
the respective input on the top of the loudspeaker enclosure.
Attach the cables to the green connectors provided with the kit. Be sure to maintain correct polarity when connecting the
cables and be extra careful not to mix the
tweeter and woofer cables. The correct pin
sequences are marked on the amplifier and
loudspeaker enclosure. Starting from the
top, the first two poles on the amplifier connector are for the 12 V remote control voltage, pole 3 for tweeter -, pole 4 for tweeter
+, pole 5 for woofer - and pole 6 for woofer
+. Respectively, the pole sequence on the
loudspeaker connector is 1 tweeter -, 2
tweeter +, 3 woofer - and 4 woofer +. Secure
the cable to the strain relief tie next to the
loudspeaker connector.
Use a good quality 4-conductor cable and
make the cable runs as short as possible.
See Table 1 for recommended cable gauges.
The connectors accept a cable up to 6 mm2
(9 gauge) thick.
If you are installing the AIW25 enclosure
to an existing wall, examine the walls thoroughly for the shortest and least obstructed
cable route. Be careful to avoid cutting or
drilling into electrical wires, ventilation or
water pipes. These are often visible in the
attic, basement or crawl space below the
floor. All of this is of course much easier
when the installation takes place in an unfinished wall where the wall structure is still
open. In both cases it is a good idea to route
the loudspeaker cables away from electric,
video or phone cables, which might induce
hum into the loudspeaker system.
Painting the loudspeakers
The loudspeaker enclosure flange and the
metal mesh grill can be spray painted to
match the wall colour. Do not paint the
loudspeaker front baffle and drivers, or try
to paint the grill while it is attached to the
loudspeaker. Paint the enclosure and the
Figure 4. Screws for tightening the
mounting tabs are located at each corner
of the front baffle
grill separately with a thin spray. Do not use
brushes or rollers. Be careful to avoid clogging the grill with paint.
Attach the cardboard painting mask on
the loudspeaker front baffle before spraying
the loudspeaker to protect the drivers and
front baffle from smearing.
Installing the AIW25
loudspeaker enclosure
For new construction installs, we recommend planning the loudspeaker placement
at an early stage and using the optional
Genelec New Construction Brackets (order
code 272-0030) for marking the desired locations. The brackets can be nailed or screwed
to the studs to show the drywall installers the
places where holes for the loudspeakers are
to be located.
When installing the enclosure in an existing wall, use the cardboard wall cut-out template to find the best location. The template
also shows the position of the loudspeaker
drivers and acoustic axis, so you can easily
find the placement that brings them to the
optimum position as outlined in chapter
“Loudspeaker placement”.
Examine the wall structure carefully to find
a clearly unobstructed location for the loud-
speaker. The loudspeaker enclosure requires
a minimum of 98 millimeters (3 27/32”) of free
depth measured from the outer surface of the
sheetrock. Also note that the enclosure flange
is wider and taller than the hole and requires
about 20 millimeters (3/4”) of smooth wall
surface 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 outline 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 drywall 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 unsuitable. 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”.
Loosen the screws on the four mounting
tabs on the AIW25 enclosure a few turns to
allow the tabs to turn.
Lift the AIW25 enclosure into the hole and
turn the screws clockwise so that the mounting tabs rotate outwards. Continue tightening 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
The RAM2 amplifier is designed to be connected 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 loudspeaker enclosures are not yet installed,
make a note of which amplifier is connected
to each channel so you can find the correct AIW25 loudspeaker enclosure for every
amplifier. Connect the 12 V remote control
cables (not applicable in Europe) and loud-
Figure 5. Installing the metal support to
the RAM2 amplifier module for placement
on a solid aurface.
speaker 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-chaining several systems together. For long cable
connection lengths (>10 m or >30 ft) a balanced line connection is recommended as
it offers better immunity to external interference. 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 overheating, 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
Figure 6. Installing the RAM2 amplifier
module to the optional RM2 rack mount
the temperature below the aforementioned
maximum level.
If the RAM2 amplifier is placed on a
shelf or other solid surface, the metal support 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 amplifier. The space behind the amplifier must be
well ventilated. If the temperature inside the
rack is likely to rise close to RAM2’s maximum ambient temperature of 35° C (95° F),
we recommend installing ventilation fans
to ensure that the thermal protection is not
activated 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 sensitivity control on the amplifier’s front panel. A
small screwdriver is needed for the adjustment. 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 preamplifiers are capable of this output level.
Setting the room response
The acoustic response of the system may
have to be adjusted to match the acoustic
environment and personal taste. See Table
2 for suggested room response control settings in differing acoustic environments. If the
sound is found subjectively too bright, set
‘TREBLE TILT’ to “ON” (-2 dB), if too bass
heavy, you can choose between three attenuation levels (-2, -4 or -6 dB) by switching on
the corresponding ‘BASS TILT’ switch.
The "BASS ROLL-OFF" switch activates
an 85 Hz high-pass filter, which can be used
for matching the loudspeaker response
to a correspondingly low-pass filtered
The manufacturer default settings for all
controls are ‘All Off’ to give a flat response
in half space, i.e. when the loudspeaker has
been installed in a wall. Always start adjustment by setting all switches to the ‘OFF’
position. The "BASS TILT" switches are not
cumulative. If more than one switch is set to
‘ON’ the attenuation value is not accurate.
Using Autostart and Remote
Control functions
functions described in this chapter are not
available on units sold in Europe.
In daily use, the RAM2 amplifier can be
switched to Standby mode to save energy
by activating the signal sensing Autostart
function or by using a 12 V trigger voltage
from the decoder. These functions are not
available in units sold in EU countries. If the
system is left unused for several days, we
recommend that you power it down using
the RAM2’s main power switch or a central
power switch if one has been installed.
The Autostart function is activated by turning switch 2 (AUTOSTART) on the amplifier
front panel to “ON”. Autostart turns the amplifier to “STANDBY” mode if there is no signal
present for about 30 minutes. When the signal
returns the amplifier switches on immediately
and the loudspeaker functions normally.
Bass Tilt
Treble Tilt
Half space factory default setting
0 dB (All OFF)
0 dB (All OFF)
Well damped (dead sounding) room
0 dB (All OFF)
0 dB (All OFF)
Normal room
0 dB (All OFF)
Highly reflective (live sounding) room
-2 dB ON
Double corner (wall/wall or wall/ceiling) placement
-2 dB ON
0 dB (All OFF)
Triple corner (wall/wall/ceiling)
-4 dB ON
0 dB (All OFF)
Table 2. Suggested Tone Control settings for some typical situations
If you are using a 12 V trigger type
remote control to switch the RAM2 between
“STANDBY” or “ON” modes (see chapter “Connecting the RAM2 amplifier”), turn
switch 1 (REMOTE CONTROL), on the
amplifier panel to “ON”. This activates the
remote control function. In this setting the
remote control will override the Autostart
function. If you want to use Autostart, turn
the “REMOTE CONTROL” switch to “OFF”.
Status indicator LED
The status indicator LED on the RAM2
changes colour to indicate amplifier status.
If the LED is yellow, it indicates that the
amplifier is in “STANDBY” mode. When the
amplifier is switched to “ON” mode, the LED
changes to green colour.
Automatic protection circuits
The AIW25 system has protection circuits
against loudspeaker driver thermal overload
and amplifier overheating. The protection
system resets automatically so the user only
has to turn the input level down to ensure
that it does not reactivate.
Driver thermal overload protection protects the drivers from damage caused by
prolonged overdriving with excessively high
or distorted signal. If this occurs, the circuit
automatically reduces playback volume. To
avoid this, lower the listening volume if the
sound becomes harsh and distorted at high
sound pressure levels.
When activated, the amplifier thermal
protection mutes the amplifier for very short
periods of time, making the sound harsh
and distorted. Let the amplifier cool down
and check that there is sufficient clearance around the amplifier for cooling (see
chapters “Space requirement for the RAM2
amplifier” and “Mounting the RAM2 amplifier
to an equipment rack” above). If the problem persists, consult your Genelec dealer or
Home Theater Installation company for an
improved cooling solution for your equipment cabinet or rack.
There are no user serviceable parts within
the loudspeaker or the amplifier. Any maintenance or repair should only be undertaken
by qualified service personnel.
Safety considerations
• Do not expose the loudspeaker or amplifier to water or moisture. Do not place any
objects filled with liquid, such as vases on or
near them.
• Do not place naked flame sources like
lighted candles on or near the loudspeaker
or amplifier.
• Servicing and adjustment must only be
performed by qualified service personnel.
• Opening the amplifier is strictly prohibited
except by qualified service personnel.
• Always use a mains power connection
and cable with protective earth. Failing to do
this may lead to personal injury.
• Note that the amplifier is not completely
disconnected from the AC mains service
unless the mains power cord is removed
from the amplifier or the mains outlet.
• Switch off the mains power from the
amplifier if the system is not used for long
periods of time.
This equipment is capable of delivering
Sound Pressure Levels in excess of 85
dB, which may cause permanent hearing
This product is supplied with a two year
guarantee against manufacturing faults or
defects that might alter the performance of
the unit. Refer to supplier for full sales and
guarantee terms.
AIW25 Operating Manual
Figure 7. The main dimensions of the AIW25 loudspeaker enclosure
Figure 8. The main dimensions of the RAM2 amplifier
Lower cut-off frequency, –3 dB
≤ 68 Hz
Upper cut-off frequency, –3 dB
> 20 kHz
Free field frequency response
Maximum short term sine wave acoustic
output on axis in half space, averaged from
100 Hz to 3 kHz
Maximum peak acoustic output per pair with
music material
Self generated noise level in half space at 1 m
on axis (A-weighted)
40 W at 8 Ohm load
40 W at 8 Ohm load
70 Hz – 18 kHz (± 2.5 dB)
Bass amplifier short term output power
Treble amplifier short term output power
(Long term output power is limited by driver
unit protection circuitry)
@ 1 m > 100 dB SPL
Amplifier system THD at nominal output
≤ 0.08 %
Mains voltage
100, 120 or 230 V
@ 1 m > 110 dB SPL
Power consumption (average)
Full output
10 VA
80 VA
≤ 10 dB
Recommended loudspeaker cable gauge
Harmonic distortion at 85 dB SPL
at 1 m on axis
Freq: 70…200 Hz
> 200 Hz
< 3%
< 0.5 %
130 mm (5") cone
19 mm (3/4") metal dome
Loudspeaker enclosure
3.7 kg (8.1 lb)
2.2 kg (4.8 lb)
Loudspeaker enclosure max. height
Loudspeaker enclosure max. width
Loudspeaker enclosure max. depth
Cutout height
Cutout width
Minimum free depth measured from the
surface of the wall
Amplifier height
Amplifier width
Amplifier depth*
0.8 to 5.0 mm2
(18 to 10 AWG)
Standby/On switching by signal sensing Autostart function or +12 V DC
remote control is not available in units sold in Europe.
360 mm (143/16”)
267 mm (101/2”)
104 mm (43/32”)
334 mm (135/32”)
240 mm (97/16”)
98 mm (327/32”)
177 mm
54 mm (21/8”)
260 mm (10 /4”)
*Note that the cable connectors require at
least 100 mm (4”) of space behind the
XLR female input, balanced 10 kOhm
RCA female input, unbalanced 10 kOhm
“LINK OUT” XLR male output, balanced
10 kOhm
pin 1 gnd, pin 2 +, pin 3 pin +, ring gnd
pin 1 gnd, pin 2 +, pin 3 -
Input level for 100 dB SPL output at 1 m
-6 dBu
Input Sensitivity adjustment range
+6 dBu to -6 dBu
Crossover frequency, Bass/Treble
3.0 kHz
Treble Tilt control operating range
0 to –2 dB @ 15 kHz
Bass Tilt control operating range in –2 dB
From 0 to -6 dB @ 100 Hz
Bass Roll-Off control
-6 dB @ 85 Hz
The ‘CAL’ position is with all tone controls set to ‘off’ and the input sensitivity control to maximum (fully clockwise).
Genelec Document D0064R001b. Copyright Genelec Oy 3.2017. All data subject to change without prior notice
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FIN-74100, Iisalmi, Finland
Beijing Genelec Audio Co. Ltd.
Natick, MA 01760, USA
Ellipsvägen 10B
Phone +358 17 83881
B33-101, Universal Busines Park
Phone +1 508 652 0900
Box 2036, S-127 02 Skärholmen
Fax +358 17 812 267
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Phone +46 8 449 5220
100015 Beijing, China
Fax +46 8 708 7071
Phone +86 0 5823 2014, 400 700 1978
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