GROUND ZERO GZFA 2.100 Ferrum Series 2 Channel Amplifier Owner’s Manual

FERRUM SERIES
2-CHANNEL AMPLIFIER
GZFA 2.100
Owner´s manual
(AWV2.1)

Common features

• High-quality class A/B amplifier
• 2-ohms stable in stereo / 4-ohms stable in bridged mode
• Variable low pass filter
• Adjustable bass boost function
• High-level input with auto-on function
• Adjustable input sensitivity
• Turn-on delay & thermal protection circuit
• Wired remote control

General mounting instructions

• 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 service  partners of your vehicle´s manufacturer! Please ask your service partner first before disconnecting the battery!

• 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
  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 enough for the required current!

• If necessary, replace a defective fuse by a fuse with identical quality and value

• Never drill holes to the vehicle´s gas tank, brake lines, to wirings or any other important vehicle parts!

• Never pass wires over sharp edges or vehicle parts due 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, enough air supply for cooling must be provided. Never cover the surface of the amplifier´s heatsink entirely

• The amplifier should NEVER 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.

• Some amplifiers offer a high-level input option, however if a pre-amplified output (RCA) is available (at the head unit), it is strongly recommended to make  use of them.

• Connections of RCA wires and loudspeaker cables as well as switching of any switches must be done while the amplifier is turned off

Specifications

(1% THD+N)
Output power (RMS) @ 2 Ω CEA-2006-A| 2x 85 W
(1% THD+N)
Max. bridged power @ 4 Ω| 1x 200 W
(10% THD+N)
Low pass filter| 40 Hz – 250 Hz
(12 dB/oct)
High pass filter (subsonic)| n/a
Frequency range| 15 Hz – 22 kHz
Signal-to-Noise ratio (SNR)| > 93 dB
Overall distortion (THD+N)| < 0.1%
Input sensitivity| 200 mV – 4 V
Rec. speaker wiring| ≥1.5 mm² / 16 AWG
Recommended power wiring| ≥10 mm² / 8 AWG
Fuse(s)| 30A
Dimensions| 180 x 53 x 237
7.09” x 2.09” x 9.33”

Controls & Features

1| Speaker terminal| To connect the speaker wires
(min. load 2 ohms in stereo mode / 4 ohms in bridged mode)
---|---|---
2| Power terminal| +12V To be connected to the positive terminal of the battery
REM To be connected to the remote output of the head unit*
(‘not required in high-level mode)
GND To be connected to the vehicle’s ground (or directly to the negative terminal of the battery)
3| Fuse(s)| Recommendation: A defective (blown) fuse needs to be replaced by a fuse with identical value and quality
4| High-level input| Head units without RCA pre-amplifier output signal, can be connected using the high-level input to connect the speaker output of the head unit directly. If used, the amplifier turns on automatically (auto-on feature).The remote input of the power supply terminal remains unused
Important note: High-level and RCA inputs should never be used simultaneously’ This may cause serious damage to the amplifier
5| Line input (RCA)| Input sockets to connect RCA signal wires
Important note: High-level and RCA inputs should never be used simultaneously’ This may cause  serious damage to the amplifier
6| Line output (RCA)| Output sockets offering full range audio signal for a further amplifier
7| Sensitivity control| Controller to adjust the input sensitivity
8| Low pass filter| To adjust the required crossover point. Frequencies above the selected crossover point will be filtered (40 Hz to 250 Hz)
9| Bass Boost control| To adjust the bass boost level ( 0 — +12 dB)
10| Crossover switch| To activate the low pass filter (LPF). In FULL position the whole frequency range will be reproduced.
11| Remote socket| To connect the wired remote control (GZCS REMOTE)
12| Status indication| POWER (green) ok (correct operation)
PROTECT (red) error (protection mode)

Trouble shoo4ing guide

the amplifier (harness) Check remote wire connection (RCA input mode) Check + 12 Volt power supply wire connection Check ground wire connection
Did the PROTECT LED turned to red?| Check for speaker short or amplifier overheating
Device does not turn on| Power supply of the amplifier?| Check power wire or connections
Remote wire powered? (RCA input mode)| Check remote wire connection to the head unit
No sound on one channel| Speaker wiring undamaged?| Check for short circuit or open connections
Input signal on each RCA lead?| Reverse left and right RCA inputs to check the audio input signal
Device turns off at medium / high volume| Load impedance of each speaker correct?| Check if each speaker load impedance matches the technical specifications of the amplifier
Status LED turned on red| Temperature protection circuit active| Decrease head unit’s volume / wait for cooling
Speaker wires short / speaker damaged| Check speaker / wires and insulate if necessary

Terms of warranty

The limited warranty for this product is covered by GROUND ZERO´s regional distribution partners and their terms and conditions. For further information contact your local retailer or distributor.

Impedance calculation

Safety instruction / Manufacturer´s declaration

Safety Instructions: Do not expose the device to extreme temperatures, fire, high humidity or direct contact with liquids.
Do not use the device if it has been damaged or exposed to liquids. Keep the device, packaging and accessories away from children and pets to prevent accidents and suffocation.
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.

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!

GROUND ZERO products are engineered in Germany
GROUND ZERO – international sponsor

Ground Zero GmbH
Erlenweg 25, 85658 Egmating, Germany
Tel. +49 (0)8095/873 830 Fax -8310
www.ground-zero-audio.com

http://www.ground-zero-audio.com

References

• Ground Zero Audio – Car Audio Products

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