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Setup
fl
Open Control
Panel
To gain access
to
the RA 1
amplifier
series top
mount
setting
control
panel
carefully remove
the four
screws and lift
the face
plate
up.
□
When you're finished with the control
panel mindfully put
the
face plate
back together
with
the four
screws.
Make
sure
not to
over
tighten
.
Settings
The illustrations below describe the various
controls.
Refer to
the illustration that matches your amplifier.
©
LEVEL Adjustment
The level control purpose is to match the output of your source signal to the
amplifier. Refer to the
section
C for detailed instructions.
@
X-OVER
Switch
This
switch will set
the amplifier to have a full frequency
output
or to filter out
high
or
low
frequencies.
@
Frequencies Adjustment
The Low Pass Filter
will cut
off the frequencies
above
the
setting.
The High Pass
Filter
will cut
off the frequencies below the setting.
©
SUBSONIC Switch
The Subsonic Switch
will cut off
the frequencies below the setting
.
®
BASS
BOOST
A
The Bass EQ
control will
increase the power output
at
45Hz for more pronounced
bass. Exercise
caution when
using this
control. Increase
the level in
small
amounts until distortion is noticed
,
then back
off
a
little.
RA1-300.1
/
RA1-750.1
A
ef
M'
N
-
MAX
RA 1-280.4
!'
:
~
.
®-.
BA5
_!.
E0
X-OVER
"@
X•OVE~
Q
HPF LPF
008 9o8
FULL
2
RA 1-150.2
® - _
a
"!;:_
EO
X•OVER
'@
H,-,:
L .. F
FULL
2
00B
. . . .
RA1-710.5
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