Owner's Manual

Setup
The illustrations below describe the various controls. Refer to
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The gain control purpose is to match
the output of your source signal to the
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detailed instructions.
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or low frequencies. The NA1-400.2 offers
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The Boost Switch will increase the signal
12dB at 45Hz. Be aware this setting can
cause distortion if the gain is not set
properly.
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turned down (counter clockwise).
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turned down. Make sure the source unit controls; balance, fader, bass and
treble are all set to center or “0” adjustment. Make sure that the green LED on
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3. Play a clean musical selection of which you are very familiar. CD is preferred.
Do not use radio signals for level setting. Hit play and start turning the volume
of the source unit up.
4. Stop increasing the source unit volume when you reach 3/4 (about 75%) or until
you hear speakers begin to slightly start producing distortion.
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the level down (counter clockwise) until the distortion is eliminated. Small
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Settings
A
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is properly adjusted to match the signal
output level of your source unit.
THIS IS NOT A VOLUME CONTROL!
Level Setting
B
GAIN
MIN MAX
1
3
3
2
2
1
1
3
4
5
NA2-400.1
NA2-400.2
2
1
2
1
X-OVER
HP
OFF
LP
INPUT
L
R
LEVEL HP LP
9V 0.2V 15Hz 300Hz 50Hz 300Hz
LEVEL
9V 0.2V
FRONT
X-OVER
HP
OFF
LEVEL
9V 0.2V
REAR
X-OVER
HP
OFF
INPUT
F
RONT
L
R
REAR
L
R
BOOST
0dB 12dB
INPUT
L
R
LEVEL
9V 0.2V
LPF
50Hz 150Hz
SUBSONIC
15Hz 50Hz
NA2-320.4
NA2-500.5
1 3 4
5
1
2
5
GAIN Adjustment
X-OVER Switch
BOOST Switch
The Low Pass Filter will cut off the
frequencies above the setting. The High
Pass Filter will cut off the frequencies
below the setting.
The Subsonic Filter will cut off the
frequencies below the setting. If using
with a subwoofer the settin should be kept
between 15-25Hz.
3
4
Frequencies Adjustment
SUBSONIC Adjustment