Crossover Adjustments; Selecting The Operation Mode; Highpass Crossover Frequency Adjustment; Lowpass Crossover Frequency Adjustment - EMPHASER EA450-250 Einbau- Und Bedienungsanleitung

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 ope-
rate 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 sig-
nal. Highpass filtering will take away unnecessary mechanical and electrical 'strain' from the connec-
ted coaxial or component speaker systems, as they cannot reproduce strong and low bass signals
anyway. 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 bet-
ween 50 and 150Hz, using the „HPF" potentiometer.
Front Door Satellite Speaker System („HPF" MODE)
13 cm 2-way Component System
16 cm 2- or 3-way Component System
Rear Satellite Speaker System („HPF" MODE)
13 cm 2-way Coaxial or Component System
16 cm 2-way Coaxial or Component System
6x9" or 7x10" Triaxial Speaker System

5.3 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT

Select "BPF", to activate the lowpass filter of the integrated electronic crossover.
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 cross-over 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.
10
HP Cross-Over Frequency
80 - 110Hz
50 - 80Hz
HP Cross-Over Frequency
100 - 120Hz
100 - 120Hz
100 - 120Hz