Specifications

ground contact reduces the voltage, resulting in reduced power output and

high distortion.

2.6.6 Close the electrical circuit by inserting the main fuse.

After turning-on the head-unit, the „Power/Protection” LED of the amplifier

should light-up green. If the LED is red, the installation is faulty, turn the head-

unit off immediately and re-check steps 2.6.1 to 2.6.5. The same applies if

the amplifier LED does not light up at all.

3.1 Cross-Over Settings

The EA490-200 is a concept amplifier, therefore the actual speaker outputs

will receive HPF or LPF filtered amplified signals, and the speakers will only

have to work in the frequency bands they will reproduce best. Before the re-

spective sensitivity levels of the individual amplification systems can be set, it

is advisable to set the system appropriate cross-over frequencies for all spea-

ker systems.

Satellite High-Pass Frequencies (Front & Rear „FREQ. Hz”)

It is recommended to set the high-pass cross-over frequency between 50 and

250 Hz using the „FREQ. Hz” controls. The appropriate setting should be de-

termined by ear. The two most important factors for the individual adjustment

will be the reproduction of the mid-bass frequencies and the power-handling

of the satellites (cone excursion of the mid/woofers!). If the satellite cross-over

frequency is too low, the mid-bass reproduction will be increased, but the po-

wer-handling will decrease at the same time. If the cross-over frequency is

set too high, the mid-bass reproduction will become 'thin', while the power-

handling of the satellite speakers will increase. Try to find the settings that will

suit your personal listening preferences and the physical and electrical capa-

bilities of your equipment best.

As a general rule you can get good results around the following High-Pass

Recommendations:

ont Satellite Speaker System („FRONT FREQ.”) X-Over Freq.

10 cm/4” Coaxial or Separate Component System 90 Hz

13 cm/5” Coaxial or Separate Component System 80 Hz

16 cm/6” Coaxial or Separate Component System 70 Hz

Rear Satellite Speaker System („REAR FREQ.”)

X-Over Freq.

10 cm/4” Coaxial or Separate Component System 100 Hz

13 cm/5” Coaxial or Separate Component System 120 Hz

16 cm/6” Coaxial or Separate Component System 130 Hz

EA490200 Manual 28.07.2000 16:11 Uhr Seite 14