OPERATION MODEOPERATION MODE
Before you power up your amplifi er, you must select and set the appropriate operation mode fi rst. The operation Before you power up your amplifi er, you must select and set the appropriate operation mode fi rst. The operation
mode is set, depending on the speaker system connected to the corresponding channel pair of the amplifi er. For mode is set, depending on the speaker system connected to the corresponding channel pair of the amplifi er. For
example select the Highpass (HPF) setting of the CROSSOVER slide-switch, if the speaker system driven by the example select the Highpass (HPF) setting of the CROSSOVER slide-switch, if the speaker system driven by the
corresponding channel pair is a component-, coaxial- or triaxial- type. Or else, set the operation mode switch to corresponding channel pair is a component-, coaxial- or triaxial- type. Or else, set the operation mode switch to
Lowpass/Bandpass (LPF/BPF), if the channel pair is intended to drive a subwoofer system. Highpass or Lowpass Lowpass/Bandpass (LPF/BPF), if the channel pair is intended to drive a subwoofer system. Highpass or Lowpass
fi ltering allows the connected loudspeakers to work in the frequency bands they can reproduce best, reducing fi ltering allows the connected loudspeakers to work in the frequency bands they can reproduce best, reducing
mechanical stress.mechanical stress.
HIGHPASS CROSSOVER FREQUENCY ADJUSTMENTHIGHPASS CROSSOVER FREQUENCY ADJUSTMENT
For satellite speakers, set the operation mode slide switch to the “HPF position and then adjust the Highpass For satellite speakers, set the operation mode slide switch to the “HPF position and then adjust the Highpass
crossover frequency point, using the potentiometer, to set a desired x-over frequency. Depending on the effective crossover frequency point, using the potentiometer, to set a desired x-over frequency. Depending on the effective
cone surface and the power handling of the installed ‘satellite’ speaker system, it is recommended to set the x-over cone surface and the power handling of the installed ‘satellite’ speaker system, it is recommended to set the x-over
frequency in between 50 to 150Hz. This setting must be determined by ear, since it represents a compromise where frequency in between 50 to 150Hz. This setting must be determined by ear, since it represents a compromise where
either midbass reproduction or power handling has to be sacrifi ced! either midbass reproduction or power handling has to be sacrifi ced!
Note: If the Highpass crossover frequency is set too low, the speakers will be mechanically overdriven by low volume Note: If the Highpass crossover frequency is set too low, the speakers will be mechanically overdriven by low volume
levels. If this frequency is adjusted at a point too high, too much mid/bass is cut off and the music played back will levels. If this frequency is adjusted at a point too high, too much mid/bass is cut off and the music played back will
sound thin.sound thin.
ADJUSTMENT OF THE INTERNAL CROSSOVER
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