User Manual • A Tour of the SUB 212 Amplifier & Electronics • Page 9
sub 212
| 400-watt active subwoofer
-18
-15
-24
-12
-9
-6
-3
OFF
0
180
PHASE
MUTE
AUTO
OFF
Replace Only With Same
Rating and Type
WARNING:To reduce the risk of fire or electrical shock,
do not expose this equipment to rain or moisture.
Do not remove cover. No user serviceable parts inside.
Refer servicing to qualified personnel.
blue sky international
70 Sea Lane
Farmingdale,
New York, 11735
USA
www.a bluesk y.com
designed in the USA
made in China
!
DO NOT OPEN
RISK OF ELECTRIC SHOCK
CAUTION
REF
ON
AVIS: RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
115/230 50/60 Hz 800W
T 4AL 250V FOR 230V INPUT
T 8AL 250V FOR 115V INPUT
VOLTAGE
SELECTOR
WARNING:
SET VOLTAGE
SWITCH BEFORE
TURNING ON
R
RIGHT
IN
RIGHT
OUT
LEFT
OUT
LEFT
IN
SUB
IN
SUB
OUT
SUB
GAIN
1
2
3
6
5
7
8
9
4
11
12
10
13
14
15
1.
RIGHT XLR IN - These XLR inputs should be connected to the left /
right output of your console or digital workstation. The inputs are
electronically balanced. Do not connect more than one source
to these inputs. Refer to page 6 for more information [System
Signal Flow & Connections].
2.
RIGHT XLR OUT- These XLR outputs should be connected to the
inputs of your left / right nearfield or mid-field monitors. The
outputs are electronically balanced. Refer to page 6 for more
information [System Signal Flow & Connections].
3.
LEFT XLR IN - These XLR inputs should be connected to the left /
right output of your console or digital workstation. The inputs are
electronically balanced. Do not connect more than one source
to these inputs. Refer to page 6 for more information [System
Signal Flow & Connections].
4.
LEFT XLR OUT- These XLR outputs should be connected to the
inputs of your left / right nearfield or mid-field monitors. The
outputs are electronically balanced. Refer to page 6 for more
information [System Signal Flow & Connections].
5.
SUB IN - This XLR input can be connected to either the subwoofer
output of an external bass-management controller, or the “daisy-
chain” output of a SUB 212. This input is full-bandwidth (up to
approximately 200Hz) and does not use a low pass filter.
6.
SUB OUT- This balanced XLR output can feed additional
subwoofers for increased bass performance and should be
connected to the SUB IN of an additional SUB 212. The output
contains the summed low passed subwoofer output and the SUB
IN audio.
7.
MUTE Switch - This switch is used to activate the automatic
mute circuit built into the subwoofer. When the automatic mute
circuit is activated, the system will automatically mute both the
subwoofer and satellite outputs when no signal is present for
15 minutes. This mode also reduces power consumption at idle.
Once a signal is present again, the system will automatically turn
on.
8.
PHASE - This switch is used to change the phase response of the
subwoofer only. When this switch is in the 0 position, it is in-phase
with the signal going to the nearfield or mid-field monitors. When
this switch is in the position marked 180, it is 180 degrees out-of-
phase with the signal going to the nearfield or mid-field monitors.
The PHASE setting on the SUB 212 should typically be set to
0, especially when the SUB 212 is used with Blue Sky SATs.
However, there may be times, depending on the speakers used
with the SUB 212 or because of certain acoustic conditions, that
the phase setting needs to be set to 180, so as to get proper
summation between SAT and SUB. The only way to be absolutely
sure which setting is appropriate for your studio is to use an
acoustic analyzer.
9.
SUB GAIN - This knob controls the input sensitivity of the
subwoofer amplifier only. When set to the reference position a
200mV signal at the input equals 100dB output at a meter.
10.
Rear Power LED - This power LED indicates the SUB 212 is
powered ON.
11.
AMPLIFIER HEATSINK- The heatsink provides essential cooling to
the amplifier inside the SUB 212. Please ensure that proper air
circulation is available for proper cooling.
12.
VOLTAGE SELECTOR SWITCH- This switch can be set to either
115 Volts or 230 volts. Prior to powering this unit, please confirm
that the Voltage selector switch, located on the back of the
subwoofer, has been set to the correct voltage setting. If you
are unsure of the type of power that is supplied to your home /
studio, consult your product dealer or local power company. If
your changing the Voltage, please also confirm the proper fuse is
installed [see number 14].
13.
POWER SWITCH - Controls the power to the amplifier and all
internal electronics.
14.
FUSE - Replace with same rating and type for your local voltage
rating. For 115V applications use a 8 Amp T 250V and for 230
Volt applications use a 5 x 20mm, 4 Amp, T 250V fuse (“T” =
Time Delay or SloBlo type fuse).
15.
IEC RECEPTACLE - Check voltage selector switch before
connecting power. Connect to 115 Volt AC / 60Hz power source,
rated for 800 WATTS or 230 Volt / 50Hz rated for 800 WATTS.
SUB 212
USER MANUAL • 7 • A TOUR OF THE SUB 212 AMPLIFIER & ELECTRONICS
