Ground Zero GZDSP 4.60ISO Service Manual

DSP-SERIES

AMPLIFIER

MANUAL

GZDSP 4.60ISO

• 4-channel ISO Plug & Play amplifier with integrated signal processor (DSP)

• For vehicles with ISO connectors (without active OEM sound system)

• 4-channel high-level input (via ISO harness with auto-on function)

• 4-channel line output (RCA)

• AUX input (RCA)

• TOSLINK input (sampling rate up to 24-bit/96kHz)

• Plug for optional wireless interface (for music streaming)

• 8-channel signal processor (DSP) - Cirrus Logic single core 32-bit/192 kHz

• Realtime setup of all functions (via PC)

• Simple handling one-page graphical user interface (Windows compatible)

• Channel separated parametric equalizer (6x 31 band / 2x 11band)

• Channel separated time alignment (0-15 ms / 0-510 cm)

• Adjustable crossover (HPF / LPF / BPF) in the range of 20 Hz to 20 kHz

• Selectable crossover slope (6 to 48 dB/Oct)

• Selectable phase shift for each channel (0˚ or 180°)

• Memory for 10 user presets (selectable with optional remote control)

• Two optional remote control available (one with LED display or one with LCD color display

with touch screen to adjust main and subwoofer level, select one of the presets and the input mode

• Power and status indicator (protection circuit)

• High temperature / short circuit / overload protection circuit)

Feature list

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- 3 -

Important safety notes and installation instructions

Audio connections

ISO harness connection

Note about the vehicle´s ISO plug pinout

Note about the current requirement

PC software installation

Connecting the unit with a Windows PC

8-9

USB port selection

Wrong COM port error message

Software user interface

Channel selection

Channel configuration (level adjustment and time alignment)

Application example (time alignment)

Adjustment of the crossover

Frequency chart and equalizer

File dropdown menu

Preset memory saving and loading

Remote setting / Application examples of the GZDSP 4.60ISO

Technical specifications

Error diagnosis

Warranty conditions

Package contents

• 1 x GZDSP 4.60ISO amplifier

• 1 x Universal ISO harness

• 1 x USB cable (A- to Mini-B connector) 1.5 m / 4.92 ft

• 1 x 4-channel line output harness

• 1 x AUX input harness (incl. remote connection)

• 1 x CD-ROM incl. PC software and driver package (for Windows)

• Owner´s manual (German and English)

Optionally available:

• Remote control unit

• Interface

GZDSP BT-Box with connecting cable (for wireless music streaming)

GZDSP Remote with LED display incl. connection wire GZDSP Touch-Remote with color LCD display incl. connection wire

Table of contents

Channel matrix 13

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WARNING!

• screwdriver

• electric drill, 3 mm / 0.12“ carbide drill bit

• mounting screws

• Disconnect the vehicle battery before starting the installation! (Note the vehicles operating manual)

• Never drill any holes into the fuel tank, brake pipes, wiring or any other sensitive parts of the vehicle!

• Keep the installed wires away from any sharp edges!

Required parts and tools for the installation

IMPORTANT!

High powered audio systems in a vehicle are capable of generating "Live Concert" levels of sound pressure.

Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, operation of a

motor vehicle while listening to audio equipment at high volume levels may impair your ability to hear external sounds such as horns, warning signals or emergency vehicles! This may lead to potential traffic hazards. In the

interest of safety, consumer electronics recommends listening at lower volume levels while driving.

Select a suitable location that is convenient for mounting, is accessible for wiring and has an ample room for air circulation and cooling.

The unit must not be covered or mounted close to heat emitting objects. Because of the high operation temperature (up to 80°C), it is

important to ensure sufficient distance to any heat-sensitive object . Especially the distance between GZDSP 4.60ISO and any plastic part or

electronic component should be at least 3 cm (1.18”).

You may use the unit as a template to mark the mounting holes, then remove it and drill the marked holes. Finally mount the unit with the

mounting screws.

Choose a mounting position where all electric wires are protected from being damaged by sharp edges, heat or other conditions. +12 Volt

DC electrical connections must be fused on the battery side. Make sure your head-unit and all other devices wil l remain turned off while

connecting parts of the system. If it is necessary to replace any fuse make sure to use only an equivalent one. Using inferior fuses may cause

serious damage to your unit, wiring or even your cars electric. Any kind of damage traced back on disregard of these notes will not be

covered by the warranty!

Selecting a mounting position

Mounting the Unit

Caution

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LINE OUT socket

To connect the included 4-channel RCA line out harness delivering the audio signal of channel E/F 2

MAIN INPUT socket

To connect the included ISO harness for power and high-level input as well as speaker output

POW & PRT stat us indicator

The amplifier is in operation mode as soon as the POW indicator turns on. When the amplifiers 4

REMOTE socket

To connect one of the optionally available remo te-control units GZDSP Remote

GZDSP Touch-Remote

OPTICAL INPUT socket (TOSLINK)

To connect a digital audio source using the optical signal (SPDIF / stereo PCM) Attention: If the digital audio source has no level control, we strongly recommend using one of the available remote-control units. Otherwise the audio reproduction will be app lied at max level!

PC CONNECT (MINI USB socket) and status indica tor

To adjust the audio setting the unit must be connected to a PC using the included USB cable

AUTO TURN ON switch

Selects the turn-on mode. When ON has been selected the amplifier will turn on automatically as

BT BOX socket

To connect the wireless audio interface GZDSP BT-Box or remote control GZDSP Touch-Remote –

AUX INPUT socket (REM IN/OUT)

To connect the 2-channel RCA AUX harness for an additional audio source.AUX can be se lected as

auto-on

130 mA

Audio connections

and G/H for further amplifiers. The signal can be set using the PC software

protection circuit is activated the PRT indicator turns on (see chapter Error diagnosis)

(compatible Windows PC with installed DSP software from the CD). The PC can be disconnected when the adjustment is done. The USB cable should not be extended to ensure an accurate communication between the DSP unit and the PC. The indicator next to the MINI USB socket will turn blue as soon as the connection has been established.

soon as an audio signal is detected at the high-level input. In OFF position , the amplifier has to be turned on using a separate remote wire (v ia AUX harness).

both of them are available optionally.

audio source using the PC software or one of the available remote-control units. If the input is limited to the AUX input, the remote wire has to be connected to the AUX harness (remote in). The remote out wire can be used to turn on further amplifiers when the DSP unit is in operation. A wire diameter of at least 0.5 mm² is required. The current of the remote out wire is limited to with a common current exceeding the limitation, an additional relay is required.

switch must be in OFF position and a separate

. In case of using several units

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ATTENTION!

ISO harness connection

The GZDSP 4.60ISO will be connected directly to the wiring of the factory or after market head unit (power and speaker cables) by integrating the included ISO harness as shown below. Cars with other than ISO connectors (e.g. Quadlock) require an optional adapter available at your car audio dealer.

Please note that the GZDSP 4.60ISO cannot be used in vehicles with a factory active system installed. That might lead

to serious defects of the amplifier as well as of the vehicle´s electronic system. In case of uncertainty contact your car

audio dealer or the car´s manufacturer.

Note about the vehicle´s ISO plug pinout

Please note, that the pinout of the car specific ISO plug may vary in some cases. Amongst some others the cars of the

VAG group (VW, Audi, Seat, Skoda) the pins for constant and accessory power are inverted. This has to be noticed

previous to the installation of the GZDSP 4.60ISO. For this reason, the according wires (blue and yellow) can be

repositioned at the ISO harness (see above / chapter ISO harness connection).

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ATTENTION

Note about the current requirement

The GZDSP 4.60ISO amplifier has been developed to be installed using the factory wiring. For some vehicles however,

it might be necessary to connect the power wires of the GZDSP 4.60ISO directly to the car´s battery and the ground

wire to the car´s body.

- The factory´s wiring of the head unit should have a fuse with a value of at least 20A. Otherwise the power supply might be insufficient for an accurate operation of the amplifier. (see fuses / car´s owner´s manual)

- If there are further aftermarket units like a handsfree, GPS system, charging cable or similar consumers connected to the head unit´s factory wiring, the current might exceed the fuse value.

- It is not possible to install more than one GZDSP 4.60ISO using the factory´s head unit wiring. If further amplifiers are to be installed, the power wire has to be connected directly the battery and ground wire directly to the car´s body.

- For the best result, it is recommended to connect the power wire of the GZDSP 4.60ISO directly to the battery and the ground wire to the car´s body. For this, the cable connectors of the harness have to be dispatched and connected to separate wires (not included). Please, contact your car audio installer if necessary.

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