EM Phaser EA2500D, Инструкция по установке и эксплуатации

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7. ADJUSTMENT OF THE CONTROL FUNCTIONS
Rear Satellite Speaker System („HP” enabled, 3/4-CH) HP Cross-Over 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
SELECTING A CROSSOVER FREQUENCY POINT FOR KICKBASS SPEAKERS
For a front door installed 16cm kickbass system - consisting of one up to four 16cm kickbass speaker
units per door - the OPERATION MODE switch of channels 3 & 4 of the EA475-350d must be set to
BP. The cross-over frequency point settings should be chosen according to the recommendations below:
Kickbass Speakers System („LP/BP” enabled, 3/4-CH) HI PASS LOW PASS
1 x 16cm kickwoofer unit per front door 100 - 110Hz 200 – 300Hz
2 x 16cm kickwoofer units per front door 90 - 100Hz 200 – 300Hz
3 x 16cm kickwoofer units per front door 80 - 100Hz 200 – 300Hz
LOWPASS CROSSOVER FREQUENCY ADJUSTMENTS FOR SUBWOOFERS
Select the switch position LP or BP, to activate the lowpass filter of the integrated electronic crossover.
Before attempting the sonically best lowpass crossover frequency point, you have to set the subsonic
highpass filter control to its lowest position (10Hz), so it will not interfere with the lowpass crossover
frequency adjustment.
Close the electrical circuit by inserting the main fuse. Now switch on your head unit. The OPERATING
LED of the amplifier should light-up. If the LED lights up red, your installation is faulty! Turn off the
head-unit and carefully re-check all previous installation steps!
The LOW PASS cut-off frequency point setting depends on the amplitude response and the frequency
extension of the installed subwoofer system. 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 ‘play-
ed by ear’. Turn up the input gain control to “noon” position on the corresponding channel pair, and
turn on your head unit. Now set the desired lowpass frequency by adjusting the LOW PASS frequen-
cy control knob. 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.
SUBSONIC CROSSOVER FREQUENCY ADJUSTMENT FOR SUBWOOFERS
When driving a subwoofer in lowpass operation mode, you can adjust the subsonic highpass crosso-
ver depending on the size, tuning principle and power handling of the connected subwoofer system.
The higher the subsonic crossover frequency is set, the higher the mechanical power handling of the
connected subwoofer system will be. The trade-off is reduced low end extension. Try to set the subso-
nic (HIGHPASS) frequency to fit your own taste and requirements, in a way you reach a good com-
promise of power handling and good low end extension.
EM Digital 4/5-CH Manual 2004 26.03.2004 11:39 Uhr Seite 14