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SPEAKER IMPEDANCE & POWER WIRE INFO
It is recommended that you follow the optimum speaker / subwoofer impedance info sug-
gested below.
EA-D500 → CH 1/2 and 3/4 4 ohm stereo | CH 5 4/2 ohm mono
AMPLIFIER MOUNTING
Attention! For your own safety, disconnect the negative battery terminal (GND) or
remove the main fuse in the positive power cable near the car battery, before you
start any wiring work!
Before you proceed to install this EMPHASER amplifier, it is recommended to map out the
complete system and the respective wiring required. Consider all additional electrical re-
quirements and accessories, such as power cables, interconnect cables etc., to complete
the install. Please note that - because of possible interference problems with the existing
car electrics and electronics - especially the routing of the signal cables and the chassis
ground connection will have a profound impact on the trouble-free (noise free!) operation
of the amplifier.
The mounting location should be carefully selected and in the interest of passive driver
and passenger safety, the amplifier must be securely mounted. Make sure that there
is no wiring harness, fuel tank etc. behind or below the mounting surface that may be
damaged by the drilling of the holes for the amplifier mounting screws. After installation,
there should be a clearance of at least 5cm to all sides including the top of the amplifier
heatsink. Make sure the unit is not exposed to direct sunlight, humidity, water, oil or spill of
other fluids that may enter the amplifier.
Once the location where the amplifier will be mounted is defined, use the unit as a tem-
plate for the marking of the mounting holes with pencil or felt-tip marker. The mounting
holes should be pilot-drilled, using a 2,5mm drill bit. Bolt the amp down.
Important! There must not be a direct contact of the amplifier heatsink, bottom
panel or any other metal part of the amplifier to the vehicle metal panel! Electrical
ground-loops will cause audible hum!
WIRE WIRE ROUTING
MAIN POWER WIRES
We recommend a minimum main power cable cross-section (5m total length) of 10 mm²,
for both the positive and the ground wires. Following these recommendations guarantees
a trouble-free operation of your amplifier, as well as full power output.
Run the positive main power cable („B+“) directly from the positive terminal of the car bat-
tery to the amplifier. For protection of your car audio system against electrical fire hazards,
resulting from a short-circuit of the main power cable to chassis ground a main fuse holder
must be inserted within the first 30 cm of the positive main power cable. The applicable
fuse value must be matched to the limitations of your main power cable AND the current
draw of the amplifier – therefore choose an appropriate fuse value.
Attach the ground cable to the amplifier. In most cases it will be best to keep the ground
cable („GND“) as short as possible, i.e. to find a chassis contact very close to the amplifi-
er. The ground power wire must have the same cross-section as the positive power cable.
The contact point where the ground wire is attached to, must be solid and clean, i.e. free
from rust or paint! Tighten both power input terminals of the amplifier, and double check
for perfect fit of both main cable leads!
OPTIONAL PLUG & PLAY WIRES
From your Emphaser dealer you can purchase several car-specific Plug&Play cables for
best installation comfort. Before you start with the installation with such a cable, make
sure you know the security code of your headunit (if applicable). Remove the headunit
from the dashboard and disconnect the main wire. Find a place for the EA-D500 and con-
nect the optionally available car-specific wire to the amp. Connect the wire to the headunit.
Install the headunit back in the dashboard.
LOUDSPEAKER WIRES
For longer distances to the speakers, it is best to use 1.5 mm² or 2.5 mm² speaker cables
to avoid a loss of power or risk degradation of the signal quality.
Once the speaker cables have been routed, connect them to the dedicated connector.
Maintain correct polarity („+“ to „+“; „-„ to „-„).
Close the electrical circuit by attaching the ground wire to the battery and switch on your
head unit. The green status LED should turn on. If the status LED does not illuminate or
the red protect LED lights up, your installation is wrong! Immediately turn off your head-
unit and carefully re-check all installation and wiring steps!
