Alto DYNAMATE Manuel de l'utilisateur - Page 8

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User Interface

Output Gain Controls:

Use these controls to match the optimum pre-amp input level of your amplifier or active crossover.

DYNAMATE MAX Output level: 9.5 V

Input/Output Gain Setting: Proper setting of the input and output levels is important in achieving the best signal-to-noise

ratio. Use of test tones and an oscilloscope will greatly assist in setting the optimum gain levels. For this reason, system

setup is best left to a professional car audio installer.

However, if you need to get up and running without professional help, follow these steps and you won't go far wrong.

Select Preset 09.

Set the ALTO's Output Gains to their 12 o'clock positions.

Turn the Input Gain controls fully counter-clockwise (minimum gain).

Turn the volume control on your CD player to about 75%.

Turn your amplifier input gains to a low setting (say 25%).

Now play some music and increase the ALTO's Input Gains until you see the red dots (next to each digit on the display)

begin to flash occasionally on musical peaks. This will in most cases be the optimum setting for the input gains. Note that

setting the volume control of your CD player at 75% rather than maximum is done to ensure that the signal output from

the player is pure and undistorted.

Pause the music. Now set the ALTO's Output Gains to about their 3 o'clock position (i.e. 75% of maximum) and set your

amplifier input gains to their Minimum Gain position (i.e. where the amp gives its lowest output level).

Note that the maximum output level from the ALTO processor exceeds 9 volts.

Play some music and gradually increase your amplifier's gain controls until you reach your preferred maximum listening

level, or where you begin to hear any stress from the speakers. If the music sounds distorted with the amp gains at

minimum, reduce the Output Gains on the ALTO unit.

LTO