Aquatic AV AQ-AC520 User Manual

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SETTING THE GAIN
After completing the installation, follow these steps to set the Gain Control and

then perform the Final System Checks.

1. Turn the Gain Control all the way counter-clockwise.

2. Turn the vehicle’s Ignition Switch to the ON position. Then turn the

ON/OFF Switch on the source units to the ON position. Set all Tone or

Equalization Controls to “flat” positions and turn Loudness off.
3. Play a CD or Tape and set the Volume Control at 75% of full level.

Note: If the system uses an equalizer, set its frequency controls to “flat”

positions.
4. Slowly increase the Gain Control. Stop when you hear a slight distortion of

audio.

SETTING THE CROSSOVER
The Aquatic AV AQ-AC520 features fully adjustable front and rear crossovers.

To set the crossovers, follow these steps.
1. Using the X-Over Mode Switch, select the desired mode - LP for Low Pass,

HP for High Pass and OFF for Full Range.
2. Using the Freq (Hz) Selection Control, select the desired frequency. If the

desired frequency exceeds the range of the Freq (Hz) Selection Control, press

the Crossover Frequency Multiplier Switch to increase the value by a multiplier

of 10.

•For example, 55Hz x 10 = 550Hz or 550Hz x 10 = 5.5kHz.
3. Repeat steps 1 and 2 for both the front and rear crossovers.

SETTING THE BASS BOOST
1. Initially set the Bass Boost control to its full left position (i.e. 0dB).

2. Listen to a variety of music styles (e.g. Rock, Rap, etc.) and slowly increase

the Bass Boost control until a noticeable increase in low bass response is

perceived.
3. Slowly adjust the Bass Boost control (up or down) to realize the best bass

response.
CAUTION: If you hear a “pop” (due to speaker over-excursion), lower the

Bass Boost to prevent speaker damage. If the system sounds muddy and

distorted (due to amplifier clipping), lower Bass Boost to avoid shutdown from

overheating.

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