Bu2 Controls And Their Function - Infinity BU2 Technical Manual

Powered Subwoofer
1
POWER
STANDBY
RED
2
1. Auto Power - This Auto On/Off switch controls
whether the BU2's Automatic turn-on circuit is
active. When this switch is ON, the BU2 will turn
itself on, indicated by a green LED, when it is
plugged in and receiving a signal. When the BU2
has not received a signal for 8 - 10 minutes, the
unit will revert to the STANDBY mode, indicated by
a red LED. When this switch is OFF, the unit
switches to the STANDBY mode and will stay OFF,
regardless of input signal. THIS IS NOT A TRUE
AC POWER SWITCH AS IT DOES NOT
DISCONNECT THE AMPLIFIER FROM THE
AC LINE.
2. Standby LED - The LED will light green when the
unit is plugged in and is receiving signal. When in
standby mode (when the Auto mode is active but
the subwoofer is receiving no signal) the LED is
red.
3. High Level Inputs - These High Level Inputs are for
receivers that do not have line-level "pre-amp out"
or "subwoofer out" jacks. When a pair of main or
satellite speakers are attached to the OUTPUT

BU2 CONTROLS AND THEIR FUNCTION

HIGH LEVEL INPUT
R L
AUTO
POWER
ON OFF
R L
HIGH LEVEL OUTPUT
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD-DO NOT OPEN.
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR.
LISTED
MODEL BU2
773L
P/N WF-100i
120V~60Hz 230W
AUDIO
EQUIPMENT
NOT SUITABLE FOR IN-WALL MOUNTING
LOW LEVEL
INPUT
VOLUME
PHASE
CONTROL
L
REV NOM
R
MIN MAX
terminals, they are driven the full range of
frequencies as generated by the music source
(receiver, amplifier, etc.)
4. Low Level Input - These left and right Line Level
Inputs are normally used when the receiver/
processor has line-level "pre-amp out " or
"subwoofer out" jacks. If a single cable mono
or subwoofer source is connected to the BU2, a
Y-cable must be connected to the subwoofer for
full output.
5. Frequency - The Frequency adjustment determines
the upper corner roll-off point for the BU2.
6. Phase - This controls the switch from the reverse to
normal in audio signal polarity.
7. Volume Control - This controls the volume level
of the subwoofer.
8. AC Power - This switch, present on the 230v version
only, connects the AC line voltage to the BU2;
normally it is left in the ON position.
3
4
FREQUENCY
Hz
80
60 120
180
5
50 200
6
7
POWER
8
ON
230v ONLY
OFF
BU2
2