EM Phaser EBS108A, Installation & Operating Manual

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Connect the +12V power cable to the red wire of the Plug & Play connection harness.
To protect your vehicle against shorting and resulting fire hazards, you must insert a main-
fuse holder within the first 30 cm of cabling in the engine compartment.
Connect the ground cable to the black cable of the Plug & Play connection harness. Choose a
ground point in the vehicle, not too far away from the amp terminal. The ground contact-point
must be solid and clean, e.g. free from rust or paint etc.
Low Level - RCA Interconnects
For best sound quality and noise immunity use shielded or twisted-pair RCA interconnects.
Note that RCA interconnects should be routed away from electrical devices or power cables
of the vehicle.
Connect the RCA plugs to the preamp line outs of your head unit and to the input of the Plug
& Play connection harness.
•
Don’t use both types of signal inputs at the same time!
High Level – speaker signal inputs
If your head unit does not offer RCA line outs, you must wire up the audio inputs to the exi-
sting loudspeaker wiring. Connect the wires of the Plug & Play connection harness to the
corresponding speaker wires as follows:
White to the left(+)
white/black to the left(-)
grey to the right(+)
grey/black to the right(-)
•
Don’t use both types of signal inputs at the same time!
If the amplifier is controlled by speaker signal inputs, the amp will be turned on and off by
using the DC offset of the music signal.
Remote wire
If your head unit offers a REM or P.CNTR out, route a wire back to the amp module and con-
nect it to the blue cable of the Plug & play connection harness.
Remote control wire
Chose a convenient mounting location for the remote control, that offers easy access for ad-
justment. With mounting location selected, you must run the control wire to the amp module
and connect the plug to the REMOTE port on the amplifier panel.
Commissioning
With the wiring completed, reconnect the negative battery lead. Switch on your head unit.
The green status LED of the amplifier should turn on. If the red LED lights up, re-check all
connections because something was not wired up properly.
3. ADJUSTMENTS ON THE REMOTE CONTROL
INPUT - Input sensitivity
For best sound quality and dynamics, correct input sensitivity adjustment of the amp module is
mandatory. The input gain is responsible for signal to noise ratio and the maximum distortion
free bass output of the active subwoofer.
•
ATTENTION: Before you start any adjustment on the amp module, set all tone controls of
your head unit to their neutral or flat position, e.g. BASS, TREBLE and Loudness as well as
User EQ presets.
Set the X-OVER potentiometer to approx. 120 Hz.
Set the GAIN in the anti-clockwise position. Turn up the volume of your head unit to about 75%
of max. output. Slowly increase the GAIN potentiometer setting by turning the knob clockwise,
until you hear a balanced sound with sufficient bass.
PHASE
Now check both slide switch positions of the
PHASE control. Compare the bass reproduc-
tion on the driver’s seat resulting from each
position of the switch. One setting, i.e. either
0° or 180° will give you more bass, a better
(more precise) bass or even both. This is the
correct setting that shall be kept.
LOW Pass – Crossover frequency
Finally, you can fine tune the low pass cut-off
frequency on the amp module. To fine adjust
the upper bass reproduction of your subwoo-
fer, turn the X-OVER potentiometer out of
its 120 Hz position clock or anti-clock wise.
BASS BOOST
Control potentiometer to adjust the bass boost
in the 45 Hz range. Adjustment range goes
from 0dB (no boost) to 12dB (12times higher
amplifier output).