Operating Manual
AOW312B
Genelec AOW312B
Active On-Wall Loudspeaker
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to the wall with suitable screws for carrying
the loudspeaker's weight of 43 kgs (95 lbs).
The maximum tilt angle for the loudspeaker
enclosure is 5 degrees. Do not install the
enclosure horizontally.
thicknesses. The whole cable should have
an outside diameter of 8 to 20 mm (5/16" to
13/16") to fit in the Speakon connector.
Alternatively, pre-terminated lengths of
cable are available from Genelec.
an external switch or relay type control. Do
not connect two remote controls to the loud-
speaker at the same time. Activate the func-
tion by turning the "REMOTE CONTROL" dip
switch to "ON". Note that the remote control
function overrides the “AUTOSTART” dip
switch function.
The mounting brackets are pre-drilled for
enclosure alignment angles of -15°, 0° and
+15°. If necessary, you can drill new holes to
the brackets for exact loudspeaker alignment.
The rubber isolators provided must be placed
between the brackets and loudspeaker enclo-
sure.
Be sure not to mix the amplifier/loud-
speaker pairs when installing multiple loud-
speakers at the same time. Each amplifier and
loudspeaker packed together are calibrated
together for optimal performance and marked
with the same identification number.
Setting the tone controls
The acoustic response of the system should
be adjusted to match the acoustic environ-
ment. The adjustment is done by setting the
five tone control switch groups ‘bass tilt’, ‘bass
roll-off’, ‘bass level’, ‘mid level’and‘treble level’
on the amplifier front panel. The manufactur-
er’s default settings for these controls are ‘All
Off’ to give a flat anechoic response. Figure 8
shows the effect of the controls on the ane-
choic response. Always start adjustment by
setting all switches to the ‘OFF’ position.Then
set only one switch per group to the ‘ON’ posi-
tion to select the response curve required. If
more than one switch is set to ‘ON’ (within
one switch group) the attenuation value is no
longer accurate.
Before connecting up, ensure that the mains
switch is off. Check that the mains voltage
selector on the amplifier back panel is correctly
set to your local voltage. Audio input is made
via a 10 kOhm balanced XLR connector, but
unbalanced leads may be used as long as pin
3 is grounded to pin 1 of the XLR (see Figure
7). Once connection has been made, the loud-
speakers are ready to be powered-up.
It is recommended that the surroundings
of the loudspeaker are covered with about
10 cms (4") of rockwool or similar damping
material. If the loudspeaker is covered with
a cloth, it must be acoustically transparent
and a free space of at least 2 cm (3/4") left
between the front baffle and the cloth.The
reflex port of the loudspeaker enclosure is
located on the left side of the enclosure (see
Figure 2). The airflow from the port must not
be obstructed, and a free space of at least 5
cm (2") is required before the port.
Access to the
front panel controls
The decorative front panel of the RAM4
amplifier is held in place by guide pins and
two magnets. To remove the panel, pull it
straight out.
The RAM4 amplifier is shipped with a pair
of rack ears to provide fitting into a 19" rack
and a set of feet for placement on a shelf or
table.
Maintenance
The air filter on the left side of the RAM4
amplifier must be cleaned every six months.
Remove the decorative front plate and pull
the filter out. Check the filter and replace it
with a new one if any damage or brittleness
can be found. If the filter is in a good condi-
tion, carefully clean it with compressed air.
No other serviceable parts are to be found
within the loudspeaker enclosure or the
amplifier unit. Any maintenance or repair
should only be undertaken by qualified serv-
ice personnel.
Setting the input sensitivity
Adjustment of the input sensitivity of each
RAM4 amplifier can be made to match the
output of the decoder or other source, by
use of the input sensitivity control on the
amplifier front panel. A small screwdriver is
needed for the adjustment. The manufac-
turer default setting for this control is -6 dBu
(fully clockwise) which gives an SPL of 100
dB @1m with a -6 dBu input level. To get the
full output level from the AOW312B an input
level of +10 dBu is needed at this setting.
Sufficient cooling for the RAM4 amplifier
must be ensured. The cooling fan on the
amplifier back panel draws air through the
filter on the left side panel and blows the
warmed air to the space behind the ampli-
fier. The airflow must not be obstructed. Note
also that the space behind the amplifier must
either be ventilated or sufficiently large to
dissipate heat so that the ambient tempera-
ture does not rise above 35 degrees Celsius
(95°F).
Connections
Safety considerations
Autostart and remote control
The RAM4 amplifier unit is equipped with
an “Autostart” function, which automati-
cally turns the amplifier to “standby” mode
if an input signal has not been detected
for approximately thirty minutes, and back
to “on” mode when the signal returns. The
function can be deactivated by turning the
“AUTOSTART” dip switch on the back panel
of the amplifier to “OFF”.
Each loudspeaker is delivered with two
Speakon 8-pole cable connectors. There is
one 8-pole Speakon output marked LOUD-
SPEAKER CONNECTOR on the amplifier
and two inputs (one on each side) on the
loudspeaker enclosure. Use only one of these
inputs at any time. The inputs may not be
used for daisy-chaining several loudspeakers
or connecting two amplifiers to a single loud-
speaker. The 4-pole Speakon output (LED
CONNECTOR) on the amplifier is not used
with the AOW312B.
Although the AOW312B loudspeaker and
RAM4 amplifier have been designed in
accordance with international safety stand-
ards, to ensure safe operation and to main-
tain safe operating conditions, the following
warnings and cautions must be observed:
1. Servicing and adjustment must only
be performed by qualified service
personnel. The amplifier must not be
opened.
The amplifier mode can also be switched by
a remote control unit connected to the respec-
tive inputs on the amplifier back panel. Two
pairs of connectors are provided, 1 and 2 for a
12 V DC type remote control, and 3 and 4 for
2. Do not use the amplifier with an
unearthed mains cable or unearthed
mains connection as this may lead to
personal injury.
Measure the required length of 8 pole cable
and secure the connectors on it pin to pin.
See Table 1 below for recommended cable
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Figure 3. AOW312B loudspeaker
enclosure top view.
Figure 4. AOW312B loudspeaker
enclosure top view at 15° angle.
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)
Figure 1. AOW312B loudspeaker
enclosure front view.
Figure 2. AOW312B loudspeaker
enclosure side view.
Table 1. Recommended cable thicknesses for
different lengths of cable
Cable
Screen
RCA
XLR
(Source)
(Speaker)
Figure7. RCA to XLR cable
Figure 5. RAM4 amplifier rear panel layout.
Figure 6. RAM4 amplifier front panel layout.
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3. This loudspeaker is capable of
producing sound pressure levels in
excess of 85 dB, which may cause
permanent hearing damage.
AUDIO PRECISION AOW312 ANEC
LEVEL(dBr)
vs FREQ(Hz)
04 AUG 06
90
85
80
4. A free flow of air through the amplifier is
necessary to maintain sufficient cooling.
Do not obstruct airflow through the
amplifier
BASS TILT
90
85
80
5. To prevent fire or electric shock, do not
expose the unit to water or moisture. Do
not place any objects filled with liquid,
such as vases on or near the
BASS LEVEL
TREBLE LEVEL
90
85
80
BASS ROLL-OFF
MIDRANGE LEVEL
1k
loudspeaker or the amplifier.
6. Note that the amplifier is not completely
disconnected from the AC mains service
unless mains plug or appliance coupler
of the amplifier is disconnected
20
100
10k
20k
Figure 8: The curves above show the effect of the ‘bass’, ‘mid’ and
‘treble’ level controls, and the ‘bass tilt’ and ‘bass roll-off’ controls
on the free field response of the AOW312B, measured at 2 m.
from the mains outlet. Ensure that the
plug or appliance coupler of the
amplifier is readily operable and easily
accessible for doing this.
AUDIO PRECISION AOW312 ANEC
LEVEL(dBr)
vs FREQ(Hz)
04 AUG 06
100
95
90
85
80
75
70
65
60
0
Guarantee
15
This product is supplied with a two year guar-
antee against manufacturing faults or defects
that might alter its performance. Refer to sup-
plier for full sales and guarantee terms.
30
45
100
95
90
85
80
20
100
1k
10k
20k
Figure 9: The upper curve group shows the horizontal directivity
characteristics of the AOW312B in its vertical configuration
measured at 2 m. The lower curve is a 1/6 octave power
response measurement, derived from 144 individual directivity
measurements.
EC Declaration of Conformity
This is to certify that the Genelec AOW312B Active On-Wall
Loudspeaker conforms to the following standards:
Safety:
EN / IEC 60065:1998 6th Edition
EMC:
EN 55020 : 2002 + A1 : 2003
EN 55013: (2001)
EN 61000-3-2 (2000)
EN 61000-3-3 (1995)
The product herewith complies with the requirements of
The Low Voltage Directive 73/23/EEC, EMC Directive
89/336/EEC and 93/68/EEC
Signed:
Ilpo Martikainen
Position:
Date:
Chairman of the Board
12-May-2008
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AOW312B Operating Manual
system specifications
amplifier section
aoW312B
aoW312B
Lower cut-off frequency, -3 dB
<35 Hz
Bass amplifier short term output power
Midrange amplifier short term output power
Treble amplifier short term output power
180 W (4 Ohm load)
120 W (8 Ohm load)
120 W (8 Ohm load)
Upper cut-off frequency, -3 dB
>22 kHz
Free field frequency response of system
37 Hz - 21 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 >116 dB SPL
Long term output power is limited by driver unit protection circuitry.
Maximum long term RMS acoustic output in same @ 1 m >107 dB SPL
conditions with IEC-weighted noise (limited by
driver unit protection circuit)
Slew rate
80V/µs
Amplifier system distortion at nominal output
THD
SMPTE-IM
CCIF-IM
DIM 100
<0.05%
<0.05%
<0.05%
<0.05%
Maximum peak acoustic output per pair in half
space with music material
@ 2 m >123 dB
Self generated noise level in free field @ 2 m
on axis
<15 dB (A weighted)
Signal to Noise ratio, referred to full output
Bass
Midrange
Treble
>100 dB
>100 dB
>100 dB
Harmonic distortion at 95 dB SPL at 1 m on axis:
freq. <100 Hz <1%
freq. >100 Hz <0.5%
Drivers
Bass
Midrange
Treble
Mains voltage
100/200 V or 115/230 V
nominal 10%
305 mm (12") cone
130 mm (5") cone
25 mm (1") metal dome
Voltage operating range
Power consumption
Idle
Full output
Weight
Loudspeaker
Amplifier
50 W
300 W
43 kg (95 lb)
12 kg (27 lb)
Loudspeaker dimensions
Height
Width
Depth
1500 mm (59 1/16")
400 mm (15 3/4")
175 mm (6 7/8")
Amplifier dimensions
Height
Width
Depth
133 mm (5 1/4") (3 U)
483 mm (19")
350 mm (13 4/5")*
*Note that the cable connectors require
additional >100 mm (4") space behind the
amplifier
crossover section
aoW312B
Input connector XLR female
pin 1 gnd
pin 2 +
pin 3 -
Input impedance
10 kOhm
Input level for 100 dB SPL output @1 m
Input level for maximum short term output
variable from +6 to -6 dBu
variable from +22 to +10 dBu for 116 dB
SPL @1 m
Subsonic filter
Ultrasonic filter
18 dB/octave below 35 Hz
12 dB/octave above 25 kHz
Crossover frequency
Bass/Mid
Mid/Treble
420 Hz
3.2 kHz
Crossover acoustical slopes
18 - 24 dB/octave
Crossover level control operating range in
1 dB steps
Bass
from 0 to -6 dB
from 0 to -6 dB
from 0 to -6 dB
Mid
Treble
Bass roll-off control in 2 dB steps
Bass tilt control in 2 dB steps
from 0 to -8 dB @35 Hz
from 0 to -8 dB @80 Hz
The 'CAL' position is with all tone controls
set to 'off' and input sensitivity control to
maximum.
Genelec Document D0075R001a Copyright Genelec Oy 5.2008. All data subject to change without prior notice
International enquiries:
In Sweden please contact
Genelec Sverige
In the U.S. please contact:
Genelec, Inc., 7 Tech Circle
Natick, MA 01760, USA
Phone +1 508 652 0900
Fax +1 508 652 0909
In China please contact:
Genelec, Olvitie 5
Beijing Genelec Audio Co. Ltd.
Jianwai SOHO, Tower 12, Room 2306
39 East 3rd Ring Road
FIN-74100, Iisalmi, Finland
Phone +358 17 83881
Fax +358 17 812 267
Ellipsvägen 10B
P.O. Box 5521, S-141 05 Huddinge
Phone +46 8 449 5220
Fax +46 8 708 7071
Chaoyang District
Email [email protected]
Email [email protected]
Beijing 100022, China
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