Controls and Connections 7
Right Out / Left Out
Should only be used if con-
necting this sub between
a pre-amp and amplifier.
Connect to the Left In/Right
In on the amplifier. The High
Pass: Out control filters the
output from these connections.
Sub Out
For systems utilizing multiple
subwoofers. Connect Sub Out
to the LFE Input or Right In /
Left In on additional sub(s).
LFE In
Connect to LFE Out on your
A/V processor. The subwoofers
Low Pass Filter control does
not effect this connection.
Crossover settings for LFE In
are controlled through the A/V
processor.
Right In/Left In
Connect to Main-Out or Pre-
Out on your receiver/pre-amp.
Grotto i’s Low Pass Filter con-
trol effects the signal received
through these inputs.
Speaker Level In
This set of binding posts pro-
vides a place to connect the
subwoofer using standard
speaker cable. Grotto i’s Low
Pass Filter control effects the
signal received through these
inputs.
Status Light
The Grotto i is equipped with a
multi-color LED to indicate the
current status of the woofers.
The following list explains the
meaning of the different colors:
No color:
No power. The
subwoofer is not plugged in,
or the fuse has blown.
Green:
Play mode. This indi-
cates the subwoofer detects
an audio signal and has auto-
matically switched into play
mode.
Yellow:
Standby mode. This
indicates the Power switch is
set to Standby, or the sub has
detected no audio signal for
more than forty minutes and
has automatically switched
into standby mode.
Red:
Initializing or Safe
mode. This indicates that the
subwoofer is initializing. This
also indicates if the subwoofer
temperature has exceeded
nominal operating range. If
the subwoofer overheats,
please allow it to cool and
reset it by unplugging the unit
and plugging it back in.
AC Power Connection & Fuse
Figure 3 .
Rear connection panel.
Connections
