Infinity BU-120 Owner's Manual page 10

Figure 5. Method when
using single subwoofer.
Figure 6. Method when
using two subwoofers.
10 BU Series Powered Subwoofers – Owner' s Manual
C
ONNECTING
The subwoofer may be connected to your system using the HIGH-LEVEL INPUTS (4) on the
plate located on the rear panel of the subwoofer. Use speaker wire, maintaining proper polarity
(+ to + and – to –). Attach the speaker wire to the left and right HIGH-LEVEL INPUTS on the
subwoofer and the other ends to the proper left and right OUTPUTS on your amplifier or
receiver (see Figure 5).
If you plan to use two subwoofers (one for the left and the other for the right channel) connect
wires from the left and right OUTPUT on your power amplifier or receiver and attach the other
ends to the corresponding HIGH-LEVEL INPUTS on each subwoofer. Observe polarity
(see Figure 6).
SUBWOOFER
PLATE
SUBWOOFER
Y S
OUR UBWOOFER
AMPLIFIER
OUTPUTS
LEFT RIGHT
+ – – +
+ L – – R +
Low-Level In
SPKR
In
L
SPKR
R
Out
AMPLIFIER
OUTPUTS
LEFT RIGHT
+ – – +
+ L – – R +
SPKR
In
SPKR
Out
RIGHT
SUBWOOFER
PLATE
( .)
CONT
Crossover
Power
Frequency
Phase
50 150
+ L – – R +
SPKR
In
SPKR
Out
LEFT
PLATE