LOWPASS CROSSOVER FREQUENCY ADJUSTMENT
LOWPASS CROSSOVER FREQUENCY ADJUSTMENT
Set the operation mode switch to its “LPF” position, to drive a subwoofer system.
Set the operation mode switch to its “LPF” position, to drive a subwoofer system.
The Lowpass crossover frequency should be played by ear as well, i.e. since this crossover frequency point is mostly
The Lowpass crossover frequency should be played by ear as well, i.e. since this crossover frequency point is mostly
a matter of personal taste and also depends on the vehicle itself and the subwoofer connected to the amp. As a rule
a matter of personal taste and also depends on the vehicle itself and the subwoofer connected to the amp. As a rule
of thumb, settings in a range between 60 to 90 Hz will render best sonic results. In general, setting the Lowpass
of thumb, settings in a range between 60 to 90 Hz will render best sonic results. In general, setting the Lowpass
crossover frequency point too low, will result in a weak and muddy sounding bass, while setting this crossover
crossover frequency point too low, will result in a weak and muddy sounding bass, while setting this crossover
frequency too high will result in a ‘booming’ bass sound and reduced low end extension.
frequency too high will result in a ‘booming’ bass sound and reduced low end extension.
INPUT GAIN CONTROL ADJUSTMENT
INPUT GAIN CONTROL ADJUSTMENT
Before you adjust the input gain level of the amp, to get the best signal to noise ratio from your amp / headunit
Before you adjust the input gain level of the amp, to get the best signal to noise ratio from your amp / headunit
combination, you must set all tone controls (Bass, Mid, Treble, Loudness etc.) and the fader on the headunit to the
combination, you must set all tone controls (Bass, Mid, Treble, Loudness etc.) and the fader on the headunit to the
neutral or center positions.
neutral or center positions.
Now turn all input gain controls of the installed amplifi ers anti-clockwise to their minimum positions and ALWAYS
Now turn all input gain controls of the installed amplifi ers anti-clockwise to their minimum positions and ALWAYS
start with the channel pair, that drives the subwoofer system (if applicable).
start with the channel pair, that drives the subwoofer system (if applicable).
SUBWOOFER CHANNEL
SUBWOOFER CHANNEL
Set the volume control of your head-unit to approximately ¾ of full volume, while playing a dynamic track with
Set the volume control of your head-unit to approximately ¾ of full volume, while playing a dynamic track with
good bass content. Slowly increase the input gain control of the channel pair on the amp, driving the subwoofer(s),
good bass content. Slowly increase the input gain control of the channel pair on the amp, driving the subwoofer(s),
by turning the input LEVEL potentiometer clockwise until you can just hear distorted sounds. Reduce the main volume
by turning the input LEVEL potentiometer clockwise until you can just hear distorted sounds. Reduce the main volume
level of your head-unit to a medium listening level and continue to set the remaining input gain levels.
level of your head-unit to a medium listening level and continue to set the remaining input gain levels.
SATELLITE CHANNELS
SATELLITE CHANNELS
Slowly increase the input gain control of the remaining channel pair, for example the section that drives the front
Slowly increase the input gain control of the remaining channel pair, for example the section that drives the front
door installed speaker system, by turning the LEVEL control clockwise until you reach a good tonal balance with a
door installed speaker system, by turning the LEVEL control clockwise until you reach a good tonal balance with a
slight emphasis of the bass range. Finally turn up the input level gain of all remaining channel pairs if applicable, to
slight emphasis of the bass range. Finally turn up the input level gain of all remaining channel pairs if applicable, to
reach a good balance of the front, rear and subwoofer playback levels in your car. You’re done!
reach a good balance of the front, rear and subwoofer playback levels in your car. You’re done!
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