Specifications
This section provides
a
guided tour of the
9120
that takes you step-by-step through the basic functions
and operations of the unit. We recommend that you read through this section while actually operating
the
9
120
in order to better understand the unit and
to
get accustomed to its various functions.
Making
Connections
and
Setting
Up
the
9
120
Connect the AC adapter.
Connect the
AC
adapter
to the 9120, and plug it into the
outlet.
Do
NOT
turn on the power yet.
Connect the sound source and the amplifier/speaker
system to the
9120.
First, connect the output of the sound source (keyboard,
synthesizer,
tape
recorder, etc.) to the
INPUT
jack(s) of
the 9120.
Next, connect the
OUTPUT
jacks of the 9120 to the
amplification system or mixer.
When using a mono
signal, connect it to the either of
L
or
R
terminal; when
using stereo signals, connect both outputs of the 9120 to
the amplification system.
I I
Key
board
Mixer
Amplifier
Connection
Examples
1
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Mixer
Connection
Examples
2
3.
Turn on the power of the devices in the following order:
1)
The sound source or sources which are connected to
the 9120.
2)
The 9120.
3)
The amplifier/speaker or mixer system.
This order is important to prevent speaker damage. To
turn off the equipment, reverse the order of the above
steps.
Now that you've completed all of the connections and
turned on the unit, you will have to match the level
settings of the 9120 to those of the connected sound
source and amplification system.
Begin
by
setting the sound source to the optimum
playback level.
While playing the connected sound source, adjust the
input gain level.
Use the input level gain switches
on
the rear panel if
necessary
to
bring an excessively low or high signal into
the proper range, then adjust the level from the front
panel.
Adjust the input level of the 9120 so that the
INPUT
LED(s) are lit in amber as much as possible. (In
particular, to prevent distortion, turn down the input
if
the
red LED is lit too often or continuously.)
Adjust the OUTPUT BALANCE control.
If
you're using the 9120
as
part of an effect send/retum
loop with a mixer, the output balance should
be
set to
EFFECT.
(The direct/effect balance can then
be
adjusted
on the mixer.) If you're connecting the 9120 directly
to
an arnplifier/speaker system, you should adjust the
desired direcveffect balance on the 9120.
Adjust the level
of
the amplifierlspeaker system or
mixer. Adjust the OUTPUT LEVEL control on the
9120
as well until you come up with the optimum
settings.
Use the output level gain switches on the
rear
panel if
necessary
to
bring an excessively low or high signal into
the proper range, then adjust the level from the front
panel.
--
-
6
Section
11:
Setting
Up
and Using the
9120