Audio System X 120.2 D, X 75.4 D Owner's Manual

High-Performance

Car- amplifier

designed and engineered by audio system Germany

owner‘s manual

X 75. 4 D

X 120.2 D

the sound

R

since 1988

X 120.2 D

X 75.4 d.

Congratulation on your purchase of your new X Series amlifier.

- 2-Channel High-Power Full-Range Digital amplifier

- Stable into 2 ohm stereo per channel and 4 ohm bridged mode

- Variable switchable Low Pass Filter from 50 to 300 Hz

- Variable switchable High Pass Filter from 25 to 175 Hz

- Input Sensitivity: variable 200 mV maximum to 8 V minimum

- Multi-Way Protection Circuitry: overheating, overcurrent, short circuitry and
speaker DC protection

- Operating Voltage : DC 10 ~ 16 V power input

- Wired Remote Control RTC (optional)

- High-Power-Input (normally originial radio) with automatically „Turn-On“

- Adaptercable HLAC and rca hi (optional)

- 4-Channel High-Power Full-Range Digital amplifier

- Stable into 2 ohm stereo per channel and 4 ohm bridged mode

- Variable switchable Low Pass Filter from 50 to 3500 Hz

- Variable switchable High Pass Filter from 50 to 3500 Hz

- Input Sensitivity: variable 200 mV maximum to 8 V minimum

- Multi-Way Protection Circuitry: overheating, overcurrent, short circuitry and
speaker DC protection

- Operating Voltage : DC 10 ~ 16 V power input

- Wired Remote Control RTC (optional)

- High-Power-Input (normally originial radio) with automatically „Turn-On“

- Adaptercable HLAC and rca hi (optional)

IMPORTANT: Before installation your power amplifier, we recommend to read the
ownder´s manual carefully and to follow the instructions regarding connection and
fitting exactly.

ATTENTION: Pay attention to advices and instructions of the car manufacturer.
IMPORTAN: Ihr Kaufbeleg dient als Garantienachweis für etwaige Reparaturen

oder Austausch. Bewahren Sie Ihren Kaufbeleg, Bedienungsanleitung und
Originalver-packung auf.

ATTENTION: Use of sound components can impair your ability to hear necessary
traffic sounds and may constitute a hazard while driving your automobile.

Audio SystemGermany accepts no liability for hearing loss, bodily injury or
property damage as a result of use or misuse of our products.

We recommend installing the equipment by an authorized service center or dealer. A
professional fitting and connection is the requirement for further warranty and perfect
sound.

features

2

X 120.2 D / X 75.4 D.

3. +12 V Power connection

Connect the +12 V contact of the amplifier with the supply cable via a fuse directly to the
vehicle battery. Keep in mind, that the length of the cable from fuseholder to vehicle battery
has to be a maximum of 30 cm.
Requirement for a perfect function of the amplifier is a qualitative high end fuse holder as well
as a suitable cable cross section (AWG sice 8 - 6). This fuse protects the amplifier and the
vehicle against the possibility of a short circuit in the power cable.

4. Remote connection

Connect the REM-terminal of the amplifier to the remote-output (automatic 12 V antenna­output) of the head unit. Therefore use a 0,5 - 1,5 mm power cable.

a) Take care of a professional attachement. Pay attention, that no electrical cable, gas
tank, hydraulic breakes or other components get damaged.
b) There has to be enough cooling and air circulation. Avoid the installation in small
closed boxes or close to heatening parts.
c) Protect the amplifier from fluids, wetness, heat and foreign material as well as from
other influences.

d) The amplifier is only to be built into vehicles with a 12 V DC power supply.
e) Never install the power supply cable with other original wires of the vehicle

(gas cables), fan motors, brand control moduls etc.
f) Install the signal cable (cinch cable) as well as the speaker cable far away of the
power cables to avoid troubles with the music signal.

g) The cables of your amplifier have to be installed, so that there is no danger of binding,
squeezing or breaking.

+12V

REM

GND

BATTERY

GROUND

ATTENTION:

1. Battery disconnection
First disconnect the power supply of the
vehicle. This works out the best by
removing the ground cable of the battery.

2. Ground connection

Connect the GND (ground) connection of
the amplifier with the car chassis. Keep
this cable as short as possible (not longer
than 50 cm) and use a suitable cross
section (AWG sice 8 - 6).
Make sure, that the connection with the
vehicle chassis is free of paint, dirt and
dust.

remote connection

HEAD UNIT

fuse

Max .
30 cm

3

POWER CONNECTIOn

Please follow the instructions during the installation of your amplifier:

Achtung