2.3 SPEAKER IMPEDANCE & POWER WIRE INFO
3. 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 requirements and accesso-
ries, 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, humid-
ity, 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 template for the
marking of the mounting holes with pencil or felt-tip marker. The mounting holes should be pilot-drilled,
using a 2,5mm or 3mm 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! Electrical ground-
loops can result in audible hum!
The heat dissipation capacity of this amplifier line has been designed to cope with low impedance
loads. However, EMPHASER laboratories recommend to stay at or above the suggested impedance
ratings listed below:
EA2160s
➡ 4 ohms mono / 2 ohms stereo
EA2220s
➡ 2 ohms mono / 1 ohms stereo
EA4160s
➡ 4 ohms mono / 2 ohms stereo
Note: EMPHASER laboratories recommend a minimum main power cable cross-
section (5m total length) of 20 to 50 mm², for both the positive and the ground
wires.
These recommendations guarantee trouble-free operation of your amplifier, giving you full power
output.
