front baffle and the cloth.The reflex port of
the loudspeaker cabinet is located on the left
side of the cabinet (see Figure 1). The airflow
from the port must not be obstructed, and a
free space of at least 5 cm (2") is required
before the port.
Connections
Each loudspeaker is delivered with two
Speakon cable connectors. There is one
Speakon output on the amplifier and two
Speakon cable inputs (one on each side) on
the cabinet. Use only one input at any time.
The inputs may not be used for daisy-chain-
ing several loudspeakers or connecting two
amplifiers to a single loudspeaker.
Measure the required length of cable and
solder the connectors on it. Pins 1- and 1+
carry the signal for the tweeter, pins 2- and
2+ for the mid range driver and pins 3- and 3+
for the woofer. Pins 4- and 4+ are not used.
See Table 1 below for recommended cable
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.
Be sure not to mix the amplifier/loudspeaker
pairs when installing multiple loudspeakers
at the same time. Each amplifier and loud-
speaker delivered in the same box are marked
with the same identification number and cali-
brated together for optimal performance.
Sufficient cooling for the amplifier must
be ensured. Leave at least ten centimeters
(4 inches) free space above and below the
amplifier to ensure cooling. The space adja-
cent to the amplifier must either be ventilated
or sufficiently large to dissipate heat so that
the ambient temperature does not rise above
35 degrees Celsius (95°F).
There are no fans in the amplifier unit so
it may be mounted in the listening room near
the lodspeaker cabinet using a short cable.
Before connecting up, ensure that the mains
switch is off. Check that the mains voltage
selector is correctly set to your local voltage.
Audio input is made via a 10kOhm balanced
XLR connector, but unbalanced leads may be
used as long as pin 3 is grounded to pin 1 of
the XLR. Once connection has been made, the
loudspeakers are ready to be powered-up.
Setting the input sensitivity
Adjustment of the input sensitivity of each
loudspeaker can be made to match the
output of the decoder or other source, by use
of the input sensitivity control on the amplifier
panel. A small screwdriver is needed for the
adjustment. The manufacturer default set-
ting 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 AOW312 an input level of +10 dBu
is needed at this setting.
Autostart and remote control
The AOW312 is equipped with an “Autostart”
function, which automatically 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 to “OFF”. A two-colour LED on
the amplifier panel indicates the ampli-
fier status: green for “on” and yellow for
“standby”.
The amplifier mode can also be switched
by a remote control unit connected to the
respective inputs on the amplifier. Two pairs
of connectors are provided, 1 and 2 for a
12 V DC type remote control, and 3 and 4 for
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 on the amplifier panel to "ON". Note
Figure 2. Amplifier panel layout of the AOW312.
-1
-2
-3
-4 dB
-5
-6
MUTE
SERIAL
NUMBER
WARNING
NEVER OPERATE THIS EQUIPMENT WITHOUT A PROPER
EARTHED MAINS CONNECTION.
IT IS FORBIDDEN TO UNDO ANY SCREWS ON THIS EQUIPMENT.
SERVICING AND ADJUSTMENT MUST ONLY BE CARRIED OUT
BY QUALIFIED SERVICE PERSONNEL.
DO NOT EXPOSE TO WATER OR MOISTURE.
THIS EQUIPMENT IS CAPABLE OF PRODUCING SOUND
PRESSURE LEVELS IN EXCESS OF 85dB WHICH MAY CAUSE
PERMANENT HEARING DAMAGE.
ENSURE THAT THE CORRECT VOLTAGE IS SELECTED BEFORE
CONNECTING TO THE MAINS SUPPLY.
ELECTRIC SHOCK HAZARD!
MAINS INPUT
50 / 60 Hz
300 Watts
115 / 230 V
ON
˜
PIN 1 = GROUND
PIN 2 = + INPUT
PIN 3 = - INPUT
MAINS
VOLTAGE
SELECTOR
2
3
20Hz
100Hz
20Hz
250Hz
-8
INPUT SENSITIVITY
REQUIRED FOR
100dB SPL@1m.
REFER TO
OPERATING MANUAL
FOR MAXIMUM SPL.
SIGNAL INPUT
INPUT SENSITIVITY
-6
1
dBu
+6
+2
+4
-4
-2
0
BASS
TILT
BASS
ROLL-OFF
-2
-4 dB
-6
-8
OFF
ON
-2
-4 dB
-6
-8
OFF
ON
-2
0
-6
-4
ALL OFF
dB
-2
-8
-6
-4
0
dB
ALL OFF
CAL POSITION
ALL TONE CONTROLS : OFF
INPUT SENSITIVITY : -6dBu
20Hz
400Hz
3kHz
20kHz
FOR A FLAT FREE FIELD RESPONSE SET ALL
TONE CONTROLS TO OFF.
FOR ACCURATE OPERATION ONLY ONE
SWITCH IN EACH TONE CONTROL GROUP
SHOULD BE ON AT A TIME.
REFER TO THE OPERATING MANUAL FOR
SUGGESTED TONE CONTROL SETTINGS.
BASS
LEVEL
-1
-2
-3
-4 dB
-5
-6
MUTE
OFF
ON
0
-1
-2
-3
-4
-5
-6
dB
BASS
TREBLE
LEVEL
MID
LEVEL
OFF
ON
-1
-2
-3
-4 dB
-5
-6
MUTE
OFF
ON
TREBLE
MID
LEVEL CONTROLS
USING THE TONE CONTROLS
MADE IN FINLAND
www.genelec.com
MAGNETICALLY SHIELDED
GND
EXTERNAL
SWITCH
OR RELAY
12 V DC
REMOTE
2
3
4
1
+
REMOTE CTRL
AUTOSTART
POWER LED
STANDBY LED
REMOTE
CONTROL
OFF
ON
DO NOT USE BOTH
REMOTE CONTROL
TYPES AT THE
SAME TIME.
SWITCH THE REMOTE
CONTROL DIP SWITCH
ON WHEN USING
REMOTE CONTROL.
REMOTE CONTROL
OVERRIDES
AUTOSTART FUNCTION.
AUTOSTART SETS
THE AMPLIFIER TO
STANDBY MODE
WHEN THERE
IS NO SIGNAL.
CONNECTOR
PIN NO.
3
EXTERNAL SWITCH
4
OR RELAY
REMOTE CONTROL
TYPE
1 +
2 GND 12 V DC REMOTE
PIN 1 HIGH: ON
PIN 1 LOW: STANDBY
AMPLIFIER MODE
CONTACT CLOSED: ON
CONTACT OPEN: STANDBY
HT312A ACTIVE HOME THEATER SYSTEM
ON
TREBLE,MIDRANGE
AND BASS LEVEL
SWITCHES
BASS TILT AND
ROLL-OFF
SWITCHES
INPUT
SENSITIVITY
ADJUSTMENT
SIGNAL INPUT
CONNECTOR
MAINS VOLTAGE
SELECTOR, MAINS
CONNECTOR
AND SWITCH
REMOTE CONTROL
AND INDICATOR LED
SWITCHES
REMOTE CONTROL
CONNECTORS
400 (15 3/4")
220 (8 21/32")
47 (1 27/32")
1652 (65 1/32")
1672 (65 13/32")
1500 (59 1/16")
1360 (53 17/32")
ACOUSTIC
AXIS
181 (7 1/8")
175 (6 7/8")
246 (9 11/16")
15
°
Figure 1. Cabinet dimensions of the AOW312. The acoustic
axis is located at the indicated height on the centerline of the
loudspeaker cabinet.
Figure 3. AOW312 loudspeaker
cabinet top view.
Figure 4. AOW312 loudspeaker
cabinet top view at 15° angle.
Cable gauge
Max. length
2,0 mm
2
(14 AWG)
30 m (100 ft)
3,3 mm
2
(12 AWG)
40 m (130 ft)
5,3 mm
2
(10 AWG)
60 m (200 ft)
Table 1. Recommended cable thicknesses for
different lengths of cable
