GROUND ZERO GZIA 2.135 2-Channel Amplifier Owner’s Manual

2-KANAL VERSTÄRKERGZIA 2.135Owner´s ManualIRIDIUM SERIES

Features

  • High-quality class A/B amplifier
  • 2 ohms stable in stereo mode
  • 4 ohms stable in bridged mode
  • Variable high pass filter
  • Variable low pass filter
  • High-level input with auto-on function
  • Adjustable input sensitivity
  • Turn-on delay
  • Thermal protection
  • Short protection
  • Overload protection
  • Optionally available bass level remote control (GZTA Bassremote)

Mounting instructions

  • As a precaution, it is recommended to disconnect the vehicle’s 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 the main fuse holder with a fuse value matching the recommendation for your amplifierNote: 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 with a fuse of identical quality and value
  • Never drill holes to the vehicle´s gas tank, brake lines, 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.

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.

Recommended wiring

Speaker wires min 1.5 mm² / 15 AWG
Power supply wires min 10 mm² / 8 AWG

GROUND ZERO products are engineered in Germany

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Controls & Features

1 Speaker terminal Tom conned the speaker wiresMin. load in stereo mode: 2 ohms/channelMin. load in bridged mode: 4 ohms
2 Power terminal + 12V: To be connected to the positive terminal of the batteryREM: 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 &alit to the negative terminal of the battery)
3 Fuse(s) If necessary to replace a defective fuse, it’s strongly recommended to use a fuse with the identical value
4 High pass filter To adjust the required crossover point. Frequencies below the selected crossover point will be filtered (40 Hz to 3000 Hz)
5 Low pass filter To adjust the required crossover point. Frequencies above the selected crossover point will be filtered (30 Hz to 250 Hz)
6 Mode switch To set up the crossover for the required use of the amplifierFLAT: entire frequency range will be reproducedHPF: only mid/high frequencies will be reproducedLPF: only low frequencies will be reproduced
7 Sensitivity control Controller to adjust the input sensitivity
8 Line input (RCA) Input sockets to conned RCA wiresImportant note: High-level and RCA inputs should never be used simultaneously! This may cause serious damage to the amplifier
9 High-level input Head units without RCA pre-amplifier output signal can be connected using the high-level input to conned 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 unusedImportant note: High-level and RCA inputs should never be used simultaneously! This may cause serious damage to the amplifier
10 Status indication POWER (green) ok (correct operation)

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PROTECT (red) error (protection mode)

11 Remote wire socket Tom conned the optionally available boss level remote control

Specifications

Model GZIA 2.135
Amplifier type 2 channel class AB
RMS Power @ 4 n CEAStandard CEi42006-A 2x 85 W (I% il-D+Nlj
RMS Power @ 2 n CEAStanchrd CEA-2006-A 2x 135 W (1%THD+14)
RMS Power @ 4 Din bridged mode CEASt:Mold CEA-2006-A 260 W (1%THD+14) 300 W [1016THD+N)
Low pass filter 30 FE — 250 Hz (12 dB/oct)
High pass filter 40 Hz — 30001-12 (12 d8foc1)
Frequency response 10 tit – 30 kHz (± 3 dB)
Signal to noise ratio (SNR) > 99 d8
Total harmonic distortion (THD+N) < 0.02%
Damping factor > 150
Input sensitivity 200 mV— 6 V
Fuse(s) 2x 15A
Dimensions WxHxD (heatsink/overall) 192 x 49 x 214/242 mm
Dimensions WxHxD (heatsink/overall) 7.56 x 1.93 x 8.43/9.53′

Troubleshooting guide

Symptoms

Check/ Cause

Action

No audible sound Does the POW lead turn green? Check protection fuse(s) of the amplifier (harness) Check remote wire connection (RCA input mode) Check +12 Volt power supply wire connection Check ground wire connection
Did the PROTECT lead turn to red? Check for speaker shod or amplifier overheating
The device does not turn on The power supply of the amplifier? Check per wire or connections
Remote wire-powered? (RCA input mode Check remote wire connection to the head unit
No sound on one channel Is Speaker wiring undamaged? Check for short circuit or open connections
The input signal on each RCA lead? Reverse left and right RCA inputs to check the audio input signal
The 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

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

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

References

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