EMPHASER EA490-200 Installation & Operating Manual page 11

EA490200 Manual 28.07.2000 16:11 Uhr
the resulting excess heat generation inside the amplifier will cause the ther-
mal protection circuitry to shut-off the amplifier.
Use rubber grommets when running cables through any metal or sharp
plastic to prevent accidental shorting or shearing. Make sure the cables do
not interfere with normal operation of the vehicle.
Especially the music signal cables (RCA interconnects) should be kept far
away from any potential sources of electrical interference e.g. electronic
vehicle management systems (engine computers, relays etc.) fuel pumps, wi-
ring harnesses etc.!
2.6.2 Carefully run the audio signal and remote switching ca-
bles and the remote bass control cable from the head-unit
or dashboard to the amplifier. The audio signal cables should be rou-
ted completely separate from the power cables. Use only double or triple shiel-
ded quality cables!
Connect the remote (turn on/turn off) lead to the respective output/input of
the head-unit and the amplifier. If your head-unit does not have a separate
remote lead you may also use the antenna remote output. Now you can
connect the audio cable to the respective outputs on the head-unit and the
inputs of the amplifier.
Mount the remote "Sub Level CONTROL" unit in a convenient position on
or under the dashboard and connect the cable between the remote control
unit and the amplifier ("SUB LEVEL CONTROL INPUT").
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2.6.3 Connect the loudspeaker wires as shown in fig. 3. Use
good quality speaker wires of minimum 1,5mm
section. Start with loosen the allen screws of the respective screw terminals.
When stripping the wires for connection, remove approximately 8mm of the
insulation and insert the bare ends into the corresponding speaker terminal
output on the amplifier. Be sure to follow correct polarity of each wire.
Tighten the allen screws of the amplifier.
2.6.4 Run the positive power cable („+12 V") directly from
the positive terminal of the car battery to the amplifier. To pro-
tect your car audio system and your entire car against electrical fire hazards
from a short-circuit of the main power cable with chassis ground, you must
insert a main fuse (holder) within the first 30cm of the battery. The fuse type/va-
lue should be matching the limitations of your main power cable and the re-
quirements of your car audio system, in case of the EA490-200, the mini-
mum vakue is 60 Ampere! Do not insert the main fuse until the entire instal-
lation is completed!
2.6.5 Now you route the ground cable to the amplifier. Try to
find a GND contact very close to the amplifier. The ground power cable must
have the same cross-section as the positive power cable. It is recommen-
ded to use a corrosion-resistant gold-plated power ring between the ground
cable and the chassis ground point. The contact point on the car chassis
should therefore be solid and clean, i.e. free from rust or paint etc. A bad
- preferably 2,5mm cross-
2 2
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