0. INSTALLATION
For safety reasons, the amplifier has to be mounted properly and fixed to
the car body. Please fix the device using the screws that come with your
product. Be careful when drilling holes, there might be wires, fuel lines or
the gas tank behind a wall! Never drill holes when you do not know what´s
behind. Never install signal wires close to power cables to avoid hum and
alternator noise is being induced.
1. CONNECTIONS
Before you make any connections, always disconnect the battery!
1.1 First of all, connect the RCA cables coming from the radio/headunit
to the respective inputs of your amplifier. Always run signal cables in
a distance to power cables and the vehicle´s factory wires to avoid
induction of noise.
1.2 Now the speaker wires must be connected to the respective speaker
terminals. Please make sure to use speakers with the correct impedance!
Also make sure to connect all speakers with correct polarity to avoid
phase problems which can spoil the sound of the whole system.
1.3 Connect the BLC to the amplifier.
1.4 Next step is the ground connection. Check for a good grounding point
using your vehicle´s chassis. Make sure that this point has good
electrical contact! Some parts of the chassis might only be glued and
have no contact to battery (-). Run all ground cables of the system
to this point to avoid alternator whine and other noise.
1.5 As the next connection the +12 V cable has to be connected to the
(+) terminal of the battery. Always be careful not to run this cable
around sharp edges, the insulation might be damaged. For holes
always use grommets!
Always use an in-line fuse in the +12 V power cable in max. 12"
from the battery´s + terminal (value must meet the current
1.6 The last connection is the remote wire. The headunit must always be
turned off during this connection, as it might be damaged when
remote output is shorted to ground!
Now you can reconnect the battery and insert the main fuse into the power
cable fuse holder.
CAUTION: Both, the +12 V and the ground cable, must have
sufficient diameter!
XETEC
proposes the following minimum gauges:
Total output power of the system:
Up to 100 W:
6 mm
2
Up to 1000 W:
35 mm
2
Up to 250 W:
8 mm
2
Up to 1200 W:
40 mm
2
Up to 500 W:
10 mm
2
More than1200 W:
50 mm
2
Up to 750 W:
25 mm
2
Weaker Cables will reduce the performance of your system significantly,
and may cause damage to your amplifiers. Weak cables also will heat-up!
CAUTION
Always replace fuses with same value. Higher values may cause damage
to your amplifier, battery or car!
2. FIRST POWER-ON
2.1 Adjust all level controls to minimum.
2.2 Turn on the radio at low volume.
2.3 Increase the volume and adjust the front speaker’s volume.
2.4 Now adjust the level ratio between front and rear speakers and
subwoofer (BLC).
XETEC
recommends the following crossover frequencies:
16 cm front speaker:
16 cm rear speaker:
Highpass 80-100 Hz
Highpass 100-120 Hz
13 cm front speaker
16 cm rear speaker:
Highpass 100-140 Hz
Highpass 120-150 Hz
13 cm front speaker:
10 cm rear speaker:
Highpass 120-200 Hz
Highpass 150-200 Hz
16 cm midbass: Bandpass 80/150 Hz (= Highpass 80 Hz + Lowpass 150 Hz),
Composystems then are run with Highpass 150-180 Hz!
Subwoofer: Lowpass 70-100 Hz, Subsonic 20-35 Hz
2
requirements of the whole sound system, minimum value is 60 A).
Содержание Gravity MK2 5G-900
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