User`s manual
REAR
PANEL
CONNECTIONS·
DETAILED
EXPLANATION
Your new subwoofer
is
equipped with both speaker-level and line-level inputs. Use the
RCA/Phono type "INPUT" jacks when connecting your subwoofer
to
a pre-amp, signal
processor, or line-level crossover. The
"SPEAKER
LEVEL
INPUT" jacks connect directly to the
speaker outputs of
an
integrated amplifier
or
receiver. Your amplifier section will notice
no
additional loading effects when
you
use these inputs because of
their
high impedance.
Note:
Do
not use both the RCA/Phono "INPUT" connections and
"SPEAKER
LEVEL
INPUT"
connections simultaneously.
Low-Pass
Crossover
Both sets of inputs sum the left and right channels together
and
the resulting signal is passed
through
an
adjustable low-pass crossover before being amplified.
The
crossover control allows
you
to adjust the upper limit of the subwoofer's frequency response
from
40
to
1
20
Hz.
The
subwoofer's response will begin rolling off above the frequency
you
set this control to. [See note
above about frequency limits.)
You
should set the crossover frequency
to
obtain a smooth and seamless transition from the
subwoofer
to
the main speakers
in
your system.
Do
this
by
listening
to
the
blend between your
satellites and subwoofer using familiar material.
If
your main speakers are smaller units with
limited low frequency output,
you
may wish
to
choose a higher frequency [such as
100
-120
Hz)
than
you
would with larger speakers which have
greater
low frequency output.
With
larger
speakers,
you
might
start
with this control set lower, such as
70
Hz.
Subwoofer
Direct
Subwoofer Direct
is
the leftmost setting
on
the low-pass crossover knob and will allow
frequencies
up
to
200
Hz
into the subwoofer.
If
you
are not using
an
external crossover,
we
recommend
that
you
use the
one
provided within the subwoofer
for
optimum performance.
Caution!!!
To
avoid damage
to
your main amplifier,
be
sure to maintain
correct
polarity when making
all
connections.
Red
[positive) to red, and black [negative)
to
black.
Be
sure
that
all
connections
are tight,
and
that
there are
no
loose strands or frayed wires.
Power
Switch
The
master power switch
is
located
on
the middle left half of the unit. This rocker style switch
is
the main
on/off
for the unit. This switch should
be
set to position 1 for
on
[up), 0 for off [down).
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Optimum
User's
Manual
. 9