Genelec Speaker AOW312B User Manual

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 levelandtreble 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  
Beijing 100022, China  
Phone +86 0 5869 7915, Fax +86 10 5869 7914 Email [email protected]  
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