Settings for Best Performance
INSTALLATION INSTRUCTIONS
3
NA180.2 / NA360.4 / NA710.5 / NA540.6
General:
At this point you are ready to get more specific on the settings for your amplifier.
Filter Adjustments (Crossover)
High:
-When in High Pass operation, this setting acts as a low frequency cut off for your system reproduction. The point that you set it at cuts off any
frequencies from reproduction beyond this point. The 12 o’clock position is a great starting point. EXAMPLE: If you adjust the Frequency to 100Hz,
the amplifier will not play frequencies below 100Hz but will play frequencies from 100Hz to the highest frequency the amplifier is capable of
reproducing.
Low:
The Low Pass adjustment acts as a ceiling and doesn’t allow frequencies to the right of the desired setting to be reproduced. Turning the Frequency
all the way to the right is a great starting point. EXAMPLE: If you adjust the Frequency to 120Hz, the amplifier will not play frequencies above 120Hz
but will play frequencies from 120Hz to the lowest frequency your amplifier can reproduce.
Flat:
The Flat adjustment bypasses the crossover and allows all frequencies to be sent from the amplifier to your speakers and subwoofers.
Bass EQ:
This setting is a fixed bass boost at 45Hz that is variable. NA710.5 is 0-10dB on the 5th channel while the NA180.2/NA360.4/NA540.6 are 0-9dB.
This feature provides impact to your bass, but if not adjusted correctly, it can be over used and cause damage to your speakers and amplifiers. It is
best to slowly turn this setting clockwise until the desired punch is felt. It is not recommended to exceed the 12 o’clock position unless listening at a
low volume or a low recording quality as this can result in high distortion and possibly clipping.
Level Control Setup:
Ensure that the Level is turned completely to the left prior to turning the system on. Next you should insert a CD or cassette that you are familiar with
to use as a reference, and turn the head unit volume control to about 80% of its full setting. The system sound level will of course be very low, and
the following procedures will help you to match the amplifier input sensitivities properly to the head unit output signal level.
It is important to match the amplifier
LEVEL
input sensitivity to the Radio/CD output sensitivity. This can be located in the Radio/CD manual.
If the Radio/CD output sensitivity is 2 volts, then adjust the amplifier
LEVEL
input to 2 volts.
If you are not sure what the Radio output sensitivity is, follow these general guide lines:
Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control. If at any point your amplifier goes into protection,
you will need to turn the Level to the left a bit and then try again. If you reach a point where the output does not increase, stop turning the Level
control to the right as the amplifier/speaker combo has reached its maxx output in this application.
Summary of Contents for NAUTIC NA180.2
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