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Powered Subwoofer BU-2 – Owner’s Manual
CONNECTING YOUR SUBWOOFER
There are several ways to connect your BU-2 subwoofer. Read this section carefully to
determine which method is best suited for your installation.
The BU-2 may be fed directly with a low-level signal taken from your preamplifier’s output by
using the second set of output jacks on the rear of your preamplifier (see Figure 3a). If your
preamplifier has only one set of outputs you may use two (2) “Y” connectors (see Figure 3b) to
connect your subwoofer. Use standard shielded leads terminated at each end with male RCA
connectors. Connect one end of each stereo pair of leads to your preamplifier’s left and right
outputs and connect the other end to the corresponding left and right LOW-LEVEL INPUTS (1)
on the subwoofer.
If you are using a tube preamplifier and the connecting leads will be longer than 10 feet
(3 meters), we recommend not using the above connection method. A tube preamplifier may
not be able to handle the capacitance introduced by leads over 10 feet in length. Instead, try
using the high-level connection methods listed on page 7.
T
URN
O
FF
A
LL
P
OWER
...
I
MPORTANT
!
Figure 3a. Low-level signal
can be used from your preamp's
output by connecting second
set of output jacks to the
rear of your amplifier.
BU-2
SUBWOOFER
PLATE
LEFT
RIGHT
L
L
R
R
OUTPUTS
TO SATELLITE
SPEAKER AMPLIFIER
(Preamp with two
sets of outputs)
POWER
AUTO
POWER
ON OFF
HIGH LEVEL INPUT
+R –L +
HIGH LEVEL OUTPUT
–
+R –L +–
LOW LEVEL
INPUT
L
R