EMPHASER EA490 Spezifikationen PDF herunterladen (Seite 8)

fig. 1

■ ,,2-CH INPUT MODE” is used with head units featuring only

one pair of RCA stereo pre-outs usually the rear pre-outputs (L&R). In

this case, the amplifier will be switched into „2-CH” mode (DIP switch up, see

fig. 1). This mode will let the amplifier distribute the incoming signal evenly

between front and rear channels, plus the subwoofer channel. In „2-CH” input

mode the front/rear fader option of the head-unit is de-ac-

tivated; i.e. the relative levels between the front and rear satellite speaker

system have to be set on the amplifier. The subwoofer channel always re-

mains unaffected by the front/rear satellite setting..

SUB LEVEL CONTROL

INPUT

SUBWOOFERREAR SPEAKERS FRONT SPEAKERS

R L

50Hz

250Hz

R L

FRONT

+12VGND

4-CH

2-CH

FREQ.

LEVEL

RIGHT

LEFT

FRONT INPUTS

REAR INPUTS

(2-CH INPUT)

REAR

RIGHT

LEFT

125

40Hz

120Hz

SUB FREQ.

INPUT MODE

50Hz

250Hz

125

FREQ.

LEVEL

250Hz

4-CH

2-CH

INPUT MODE

125

FREQ.

RCA Inputs

from

head-unit

Dip Switches

Up for „2-CH”

INPUT MODE

2.1 Installation Plan

Before you proceed any further with the installation of the EA 490-200 am-

plifier, it is recommended to map out the complete audio system and the re-

quired wiring. Consider all electrical requirements, as well as safe mounting

of the amp unit, sufficient ventilation, convenient accessibility of all fuses and

gain/frequency knobs. Please note that - because of possible interference

problems with the existing car wiring and electronics - especially the routing

of the RCA signal cables and the chassis ground connection will have a pro-

found influence on a trouble-free operation of the overall system. For opti-

mum performance of this amplifier, it is recommended to use quality instal-

lation material.

If you have no or little experience with car audio installations, we strongly re-

commend to consult your nearest authorized EMPHASER dealer/installer.

2.2 Selecting Operating Modes

(„2-CH/4-CH INPUT MODE” switch)

The EA 490-200 offers two basic operating modes, depending on the num-

ber of input channels used from the head-unit. Note: If your head-unit

features a separate subwoofer RCA pre-out, it should not be

used!

EA490200 Manual 28.07.2000 16:11 Uhr Seite 8

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