Genelec AIC25 Active In-Ceiling Loudspeaker Operating Manual

AIC25
Operating Manual
Genelec AIC25
Active In-Ceiling Loudspeaker
Genelec AIC25 Active In-Ceiling Loudspeaker
The Genelec AIC25 Active In-Ceiling 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
In-Ceiling loudspeaker in this size class can
match the low distortion, neutrality and high
sound pressure capability of Genelec AIC25.
Unpacking
A Genelec AIC25 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.
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AIC25 loudspeaker enclosure.
Grill insert
AIC25 cardboard cut-out template
Loudspeaker painting mask
RAM2 amplifier unit
Mains power cable
Two M4 Phillips 2 screws
This Operating Manual
Installation
Genelec recommends that you use the services of an authorized installation specialist
or other competent and experienced instal-
lation company for the installation of the
AIC25 system. Ask your local Genelec dealer
for recommended installation companies in
your region.
Matching loudspeakers and
amplifiers
Each AIC25 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.
Cabling
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 (not
active in units sold in EU), 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 AIC25 enclosure
to an existing construction, examine the
ceiling thoroughly for the shortest and least
obstructed cable route. Be careful to avoid
cutting or drilling into electrical wires, ventilation or water pipes. All of this is of course
much easier when the installation takes
place in an unfinished building where the
ceiling 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.
BALANCED SIGNAL
INPUT CONNECTOR
BALANCED LINK
OUT CONNECTOR
MAINS INPUT
UNBALANCED SIGNAL
INPUT CONNECTOR
COMBINED CONNECTOR, PIN SEQUENCE FROM TOP:
1. REMOTE 1(NOT ACTIVE IN UNITS SOLD IN EUROPE)
2. REMOTE 2 (NOT ACTIVE IN UNITS SOLD IN EUROPE)
3. TWEETER 4. TWEETER +
5. WOOFER 6. WOOFER +
Figure 1. RAM2 amplifier back panel view
Figure 3. Screws for tightening the
mounting tabs are located at the edge of
the baffle
The loudspeaker enclosure flange and the
metal mesh grill can be spray painted to
match the surrounding 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
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 AIC25
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 272-0039) for marking the desired
locations. The brackets can be nailed or
screwed to the studs to show the ceiling
panel installers the places where holes for
the loudspeakers are to be located.
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. Connecting the loudspeaker cable
Painting the loudspeakers
Cable gauge
When installing the enclosure in an existing ceiling, use the cardboard ceiling 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 desired position
Examine the ceiling structure carefully
to find a clearly unobstructed location for
the loudspeaker. The loudspeaker enclosure requires a minimum of 160 millimeters
(6 4/ 16”) of free depth measured from the
outer surface of the sheetrock. Also note
that the enclosure flange is wider than the
hole and requires about 20 millimeters (3/4”)
of smooth ceiling surface around the hole.
When you have found a good location,
check that the template is level and trace the
hole onto the ceiling with a pencil along the
outline of the template. If you are not sure
that the chosen part of ceiling 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 ceiling. 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 three mounting
tabs on the AIC25 enclosure a few turns to
allow the tabs to turn.
Lift the AIC25 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 wire can be attached to the tab next
to the connector.
Connecting the RAM2
amplifier
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 AIC25 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 AIC25 loudspeaker enclosure for every
amplifier. Connect the 12 V remote control
cables (not applicable in EU) 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-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
the temperature below the aforementioned
maximum level.
Figure 4. Installing the metal support to
the RAM2 amplifier module for placement
on a solid aurface.
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
Figure 5. Installing the RAM2 amplifier
module to the optional RM2 rack mount
adapter.
gives SPL of 100 dB @ 1 m 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.
Setting the room response
controls
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 subwoofer.
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 ceiling. 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
“AUTOSTART” and “REMOTE CONTROL”
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. 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.
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”.
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 environment
0 dB (All OFF)
ON
Highly reflective (live sounding) room
-2 dB ON
ON
Double corner (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
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.
Maintenance
There are no user serviceable parts within
the loudspeaker or the amplifier. Any maintenance or repair should only be undertaken
by qualified service personnel.
Status indicator LED
Safety considerations
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.
• 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.
Automatic protection circuits
The AIC25 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
WARNING!
This equipment is capable of delivering
Sound Pressure Levels in excess of 85
dB, which may cause permanent hearing
damage.
Guarantee
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.
AIC25 Operating Manual
Figure 6. The main dimensions of the AIC25 loudspeaker enclosure
SYSTEM SPECIFICATIONS
AMPLIFIER SECTION
AIC25
40 W at 8 Ohm load
40 W at 8 Ohm load
Amplifier system THD at nominal output
≤ 0.08 %
Mains voltage
100, 120 or 230 V
@ 1 m > 110 dB SPL
Power consumption (average)
Idle
Full output
10 VA
80 VA
≤ 10 dB
Recommended loudspeaker cable gauge
≤ 68 Hz
Upper cut-off frequency, –3 dB
> 20 kHz
Free field frequency response
70 Hz – 18 kHz (± 2.5 dB)
Maximum short term sine wave acoustic
output on axis in half space, averaged from
100 Hz to 3 kHz
@ 1 m > 100 dB SPL
Maximum peak acoustic output per pair with
music material
Self generated noise level in half space at 1 m
on axis (A-weighted)
Harmonic distortion at 85 dB SPL
at 1 m on axis
Freq: 70…200 Hz
> 200 Hz
< 3%
<1%
Drivers
Bass
Treble
130 mm (5") cone
19 mm (3/4") metal dome
Weight
Loudspeaker enclosure
Amplifier
3.0 kg (6.6 lb)
2.2 kg (4.8 lb)
Dimensions
Loudspeaker enclosure max. diameter
Loudspeaker enclosure max. depth
284 mm (113/16”)
158 mm (63/16”)
Amplifier height
Amplifier width
Amplifier depth*
AIC25
Bass amplifier short term output power
Treble amplifier short term output power
(Long term output power is limited by driver
unit protection circuitry)
Lower cut-off frequency, –3 dB
Cutout diameter
Minimum free depth measured from the
surface of the ceiling
Figure 7. The main dimensions of the RAM2 amplifier
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.
CROSSOVER SECTION
AIC25
Connectors:
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
257 mm
160 mm (64/16”)
Crossover frequency, Bass/Treble
3.0 kHz
Treble Tilt control operating range
0 to –2 dB @ 15 kHz
177 mm (631/32”) (4U)
54 mm (21/8”)
260 mm (101/4”)
Bass Tilt control operating range in –2 dB
steps
From 0 to -6 dB @ 100 Hz
Bass Roll-Off control
-6 dB @ 85 Hz
(101/8”)
*Note that the cable connectors require at
least 100 mm (4”) of space behind the
amplifier
The ‘CAL’ position is with all tone controls set to ‘off’ and the input sensitivity control to maximum (fully clockwise).
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Genelec Document D0064R002b. Copyright Genelec Oy 3.2017. All data subject to change without prior notice
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