Identification Of Controls And Connecting Ac Power; Connecting Your Subwoofer - Infinity BU-2 Owner's Manual

IDENTIFICATION O FCONTROLS ANDCONNECTING A CPOWER
@
@
@
lnfin
NOT 8t.NTABLE FOR tN-WALI.MO_JNTING (_
@ @ @
Figure 2
Refer
to Figure
2
to identify
the controls of you'/-
subwoofer's internal amplifier:
O Auto Power: on/off switch for auto-sensing of audio signal
O
-High Level Input and Output terminal strips
@ Low Level Input jacks: connect to preamplifier outputs "
@ Volume Control: controls volume of subwoofer
Phase: reverse/normal switch to flip audio signal polarity
Frequency: controls upper comer roll-off point
@ AC Power:.on/off switch for ac power to amplifler
Turn off your entire audio system prior to connecting your
subwooi_er. Make sure the subwoofer's ON/OFF switch is in
the "OFF" position. If using an unswitched ac outlet on your
receiver or amplifier is not possible, connect your subwoofer to
an unswitched ac wall ot_tlet.
When the Auto Power switch is set to ON (and AC Power
is also ON), the BU-2's auto-sensing circuit will automatically
turn the subwoofer on when music or voice signals are
detected. When audio is absent, the BU-2 will stay in the "on"
mode (as indicated by a green LED) for approximately
8 minutes before the auto-sensing circuit shuts down the
system (as indicated by a red LED). To defeat this feature, set
Auto Power to OFF and use the AC Power switch to turn
on/off the BU-2.
CONNECTING Y OURSUBWOOFER
OUTPUTS
(Preamp withtwo I
L .(_)_)R sets ofoutputs)
I
" ". ............. ... TO SATELLITE
.......... " ....... "" SPEAKERAMPLIFIER
L(_)(_ R
I
_. o_o
i •
LEFT
RIGHT
@ . .-.'-_ @ !-
.=. 5r.,e •
• []
,e. -t ÷
lib k,=_ =rp= I_i
I!l!j;iLl!J!l!l!l!!Ll!jn,rr
Figure 3a
• 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 Figure3a). If
your preamplifier has only one set of outputs you may u_e 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 LE'_EL
INPUTS (1) on the subwoofer.
NOTE: 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 5.
3