Bedienungsanleitung Emphaser EA480 (Seite 15 von 36) (Deutsch, Englisch)

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5. CROSSOVER ADJUSTMENTS

5.1 SELECTING THE OPERATION MODE

You must select and set the appropriate operation mode before you can attempt any of the crossover

frequency adjustments. This setting depends on the speaker system connected to the amplifier. Select

the appropriate operation mode as follows:

➡ Select HIGHPASS, if the speaker system is a component-, coaxial- or triaxial- type.

➡ Select BANDPASS in case of a kickbass system, or a subwoofer system.

Selecting the appropriate operating mode for each channel pair makes sure, that the speakers con-

nected to the amplifier outputs will only receive filtered signals, so the speakers will only have to oper-

ate in the frequency band they can reproduce best.

Note: If you own a head-unit, that features an integrated DSP controlled active crossover, it is recom-

mended to use the DSP based crossovers of the headunit. In this case, you have to set the operation

mode slide switch(es) to FULL(range)!

5.2 HIGHPASS CROSSOVER FREQUENCY ADJUSTMENT

For satellite speakers, you always select the “HPF” mode, to cut off the bass content in the music signal.

Highpass filtering will take away unnecessary mechanical and electrical ‘strain’ from the connected

coaxial or component speaker systems, as they cannot reproduce strong and low bass signals any-

way. Depending on the actual cone surface, voice-coil diameter and the rated power handling of the

installed ‘satellite’ speakers, it is recommended to set the high-pass cross-over frequency point between

50 and 150Hz, using the „HPF“ potentiometer.

FRONT DOOR SATELLITE SPEAKER SYSTEM („HPF” MODE) HP CROSSOVER FREQUENCY

13 cm 2-way Component System 80 - 110Hz

16 cm 2- or 3-way Component System 50 - 80Hz

REAR SATELLITE SPEAKER SYSTEM („HPF” MODE) HP CROSSOVER FREQUENCY

13 cm 2-way Coaxial or Component System 100 - 120Hz*

16 cm 2-way Coaxial or Component System 100 - 120Hz*

6x9” or 7x10” Triaxial Speaker System 100 - 120Hz*

* When a subwoofer is part of the audio system install.

5.3 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT

Select “BPF”, to activate the lowpass filter of the integrated electronic crossover.

Note: Before you attempt to adjust the lowpass crossover frequency, you must set the subsonic highpass

filter control (when “BPF” mode is selected) to its lowest position (10 Hz).

Note: For the 2- and 4-channel amplifier models, the bandpass (“BPF”) mode will engage the HPF

potentiometer as subsonic highpass.

The LOWPASS cut-off frequency setting depends on some variables, and each vehicle is different! As

a rule of thumb, settings in a range between 60 to 90 Hz will render best sonic results. This setting is

mostly a matter of taste, and should therefore be ‘played by ear’.

Note: In general, setting the lowpass crossover frequency 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.

EA 2-4-5 CH Manual (EDF).indd 15 01.03.2006 9:30:23 Uhr

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