XETEC GRAVITY MK2 Series User manual

XETEC GRAVITY MK2 SERIES G-500 / G-1200
Congratulations for buying this XETEC product and thank you for your
confidence!With this XETEC amplifier you have purchased an innovative
and professional high-end product, which will enable you to enjoy your
musicon averyhigh quality levelformany years.Wehaveespecially focused
on electronic as well as product design to give you a product that will
accompany you for many years,as our products are always one step ahead
and will still be modern for many years.
XETEC products represent the experience our engineers have made through
many years assisted by car audio magazines as well as professional installers.
Please read these instructions very carefully,to avoid unnecessary trouble
and defects.
In case of trouble, please contact your local dealer or check our website
www.xetec.de for troubleshooting.There we also offer up-to-date tech-
tips and technical support for you.
The XETEC G-500 / G-1200isastate-of-the-art mono caraudiosubwoofer
amplifier,especially developed for top quality subwoofers.A perfect choice
are the XETEC subwoofers.
The versatility and many adjustment options make the G-500 / G-1200
an allround genius to drive one or more subwoofers.
SPECIAL FEATURES
•Remote BLC:The XETEC Bass Level Controller enables you to adjust
your subwoofer level from the dash.Use of aVCA (Voltage Controlled
Amplifier circuit) makes this option a high end feature.
•Parametric EQ:The built-in Parametric Equalizer was engineered for
correction of the vehicle´s own acoustic properties and thus can enhance
the sound quality significantly.
•The subsonic filter is able to filter out very low frequencies, which can
hardly be heard,but need a lot of energy. So cone excursion is reduced
and energy is saved which now can be used for the audible
spectrum of the music.The sound becomes clearer and more stable.
•Phase adjust can be used to get the subwoofer acoustically back to the
front systems by compensation of the delay between front speakers
and subwoofer.
•Protection circuits:Overload,Short-circuit, DC,Overheat.
SAFETY
•Before you make any connection, the battery must be
disconnected!
•Amain fuse must be installed into the +12 V wire within the
first 12" from the + terminal of the battery (insurance
regulation!).
•Please note that a minimum speaker impedance of 2 Ohms
must be maintained. Do not connect speakers with lower
impedance in normal as well as in bridged mode!
•Make sure that you do not use defective speakers and
subwoofers. They can cause damage to your amplifier!
The fuses inside the amplifier only protects the device itself,not the battery
and the car!
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CAUTION
This product is capable of conducting very high sound pressure
levels, and can thus be harmful to your health. Prolonged exposure
to high volume levels can cause hearing loss! Please use restraint
on the volume control. XETEC wants you to enjoy your amplifier
for a long time to come, and we do not take responsibility for
hearing loss nor other health problems.

0. INSTALLATION
For safety reasons, the amplifier has to be mounted properly and fixed to
the car´s 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 The BLC (remote Bass Level Controller)isconnectedwiththetelephone
wire now.
1.3 Now the speaker wires must be connected to the respective speaker
terminals.Please makesuretousespeakerswiththecorrectimpedance!
Also make sure to connect all speakers with correct polarity to avoid
phase problems which can spoil the sound of the whole system.
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 re-
quirements of the whole sound system, minimum value is 60 A).
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´s 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 100W: 6 mm2
Up to 250W: 8 mm2
Up to 500W: 10 mm2
Up to 750W: 25 mm2
Up to 1000W: 35 mm2
Up to 1200W: 40 mm2
More than 1200W: 50 mm2
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-UP
2.1 Adjust all level controls and the BLC 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 volume ratio between front and rear speakers and
subwoofer.
XETEC recommends the following crossover frequencies:
16 cm front speaker Highpass 80-100 Hz
13 cm front speaker: Highpass 100-140 Hz
13 cm front speaker: Highpass 120-200 Hz
16 cm rear speaker: Highpass 100-120 Hz
13 cm rear speaker: Highpass 120-150 Hz
10 cm rear speaker: 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
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