Ground Zero 12.300X-II User manual

GZ BASS KIT 12.300X-II
Owner´s manual
(AWV2.0)
Features
•High-quality vented subwoofer
•Efficient Aero ventilation port
•30 cm / 12” subwoofer
•IMPP cone with 3D-honeycomb structure
•GZ design push terminal
•Mono class A/B amplifier
•Stereo RCA input
•Stereo high-level input with auto-on function
•Adjustable input sensitivity
•Adjustable low pass filter
•Adjustable bass boost control
•Wired remote control
(GZTA Bassremote available separately)
•Owner´s manual enclosed
General installation note
•As a precaution, it is recommended to disconnect the vehicles battery before mounting the amplifier. (Note: For new
vehicles, disconnecting the battery might cause various errors in your vehicle´s electric system that can be cleared only
by authorized personnel of your vehicle´s manufacturer!)
•The power supply wire (+12 V) has to be protected within max. 20 cm / 8” by a main fuse holder with a fuse value
matching the recommendation for your amplifier or internal fuse value
(Note: If there is more than one amplifier connected using this power wire, the main fuse value must be equal to the
sum of the recommended fuses of all connected devices. However, make sure the diameter of your power wire will be
sufficient for the required current!)
•If necessary, replace a defective fuse by a fuse with identical quality and value
•Never drill a hole to the vehicle´s gas tank or brake lines, to wirings or any other important vehicle parts!
•Never pass wires over sharp edges or vehicle parts to avoid any kind of damage
•Keep the wiring away from the antenna and electronic devices contributing to radio reception
•Lay the power supply wiring always separated from speaker wiring to avoid disturbance
•The amplifier contains a temperature protection circuit that turns the device off in case of overheating. After a certain
cooling time, it will turn on automatically. To avoid heat build-up, sufficient air supply for cooling must be provided.
Never cover the surface of the amplifier´s heatsink entirely
•The amplifier should not be mounted onto a vibrating part or surface such as a subwoofer enclosure. This might lead
to malfunction due to loosened electrical parts inside the amplifier.
•This amplifier has got a high-level input option, however if a pre-amplified output (RCA) is available (from head unit), it
is strongly recommended to make use of it.

GZ BASS KIT 12.300X-II
Connections and controls
1
Speaker terminal
To connect the speaker wire (of the subwoofer)
2
Power terminal
GND Ground connection
REM Remote connection (not necessary when high-level input is used)
BATT +12 Volt connection
3
Fuse
Replace a defective fuse by a fuse with identical quality and value (30A)
4
High-level input
To connect your head unit (if not equipped with a low-level RCA output)
Connect this input to the speaker outputs of your head unit. The amplifier automatically
turns on (Auto On). The remote needs not to be connected
IMPORTANT!
Do not use the high-level input and the RCA input simultaneously. This may lead to
serious damage of the amplifier. Use either the RCA or the high-level input, only
5
RCA input
To connect the low-level input signal (RCA)
IMPORTANT!
Do not use the high-level input and the RCA input simultaneously. This may lead to
serious damage of the amplifier. Use either the RCA or the high-level input, only
6
RCA output
To connect an additional amplifier (RCA)
7
Gain (level) control
To adjust the input sensitivity
8
Mode switch
To select the crossover mode
LPF Low frequencies (below selected crossover point) will be reproduced
FULL Full range reproduction
9
Low pass control
To set the crossover frequency. Set the filter switch to the LOW position. Adjust the
variable LPF frequency to the desired frequency using the controller
10
Bass Boost control
To adjust the low bass increase (Bass Boost) at 45 Hz (0 – 6 dB)
11
Status indication
GREEN Amplifier is in operation mode
RED Amplifier is in protection mode
12
Remote control
connector
To connect the separately available remote control GZTA Bassremote

GZ BASS KIT 12.300X-II
Subwoofer specifications
Model
GZBK 12XBR-II (subwoofer)
Type
30 cm / 12” vented subwoofer (with Aero port)
Power handling
300 W
Impedance
4 ohms
Volume (net)
40 Liter / 1.41 cu.ft.
Dimensions
W x H x D at top/bottom (mm/inch)
520 x 360 x 250 / 350 mm
20.47“ x 14.17“ x 9.84 / 13.78“
Amplifier specifications
Model
GZBA 1.300X
Type
Mono class A/B amplifier
Power output @ 4 ohms
(14.6V) / RMS
1 x 200 W
Power output @ 4 ohms
(14.6V) / max
1 x 300 W
Low pass filter
40 – 250 Hz
Bass Boost
0 – 6 dB (@ 40 Hz)
Frequency response
15 Hz – 20 kHz
Input sensitivity
200 mV – 6.7 V
Auto-On @ High-level input

Fuse
1 x 30A
Dimensions / heatsink only
W x H x L (mm/inch)
180 x 53 x 236 / 7.09” x 2.09” x 9.29”
Trouble shooting guide
Symptoms
Inspect
Check
No sound
Is the POWER LED illuminated?
Check the fuses of the amplifier
Make sure that remote lead is connected
Check the +12 Volt connection
Check the ground connection
Is the diagnostic LED illuminated?
Check for speaker short or overheating
Amp not switching on
Power and ground wiring
Check the power and ground wiring
Remote wire
Check the connection of the head unit
Amplifier switches off
at medium or high levels
Check speaker load impedance
Make sure that the recommended speaker
load impedance is observed
Protection LED is on
Temperature shut down
Turn the head unit´s level down
Switch the head unit off
Check the installation
Speaker wires short
Separate and insulate the speaker wires

GZ BASS KIT 12.300X-II
Terms of warranty
The limited warranty for this product is covered by Ground Zero´s local distribution partners and their terms and
conditions. For further information contact your local retailer or distributor.
Respect the Music
Listening to music can be emotional, impressive, relaxing or enjoyable. At that, it doesn´t really matter what kind of
music is the personal favorite, whether it´s Instrumental, Jazz, Electro, Latin, Classic, Rock or any other music direction.
However, audio reproduction quality at each desired volume is elementary. Some music styles require higher levels
while others prefer the soft tones.
GROUND ZERO considers all the different wishes of customers during the development of new products. Along with
this, the target is to create the most realistic sound, to transfer the soul of the music and the intention of the performer.
Summarized to one phrase: RESPECT THE MUSIC!
Safety instructions
Safety instructions: Keep all parts of the content and the packaging away from children and pets to avoid accidents and
the risk of suffocation. Permanently extreme levels of over 85 dB can lead to irreparable damage to the hearing. Music
systems with high amplifier output power can reach levels of 130 dB or more. Extreme levels can also hinder the
perception of important traffic noises and distract from what is happening on the road. Ground Zero GmbH and its
sales partners expressly assume no responsibility for hearing damage, physical damage or any damage to property or
consequential damage resulting from improper or careless use or improper installation of its products. In particular, any
claims are forfeited through the use under competitive conditions.
Manufacturer‘s declaration: Herewith Ground Zero GmbH declares that this product complies with the directive
2014/30/EU (EMC) and further declares that this product is in conformity with the rules of the EU directives (including
all applicable amendments) 2011/65/EU RoHS2 and 2001/95/EC General Product Safety directive. The full text of the
Declaration of Conformity (EU) is available at the following internet address: www.ground-zero-audio.com.Electronic
products contain valuable raw materials and must not be disposed of with normal household waste. At the end of its
service life, please bring the device to your local recycling facility.
GROUND ZERO products are developed in Germany
GROUND ZERO - international sponsor
Ground Zero GmbH
Erlenweg 25, 85658 Egmating, Germany
Tel. [phone] Fax -8310
www.ground-zero-audio.com