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DSP-SERIES
AMPLIFIER
GZDSP 4.80AMP
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4-channel amplifier with integrated 8-channel signal processor (DSP)
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High efficient 2 Ohm stable class D amplifier
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6-channel line input (RCA)
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6-channel high-level input (with auto-on function)
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AUX input (3.5 mm socket)
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TOSLINK input (sampling rate up to 24-bit/96kHz)
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Plug for optional interface (wireless music streaming)
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4-channel line output (RCA)
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8-channel signal processor (DSP) - Cirrus Logic single core 32-bit/192 kHz
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Realtime setup of DSP functions (via PC)
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Simple handling, one-page graphical user interface (Windows compatible)
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Channel separated parametric equalizer (6x 31 band / 2x 11band)
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Channel separated time alignment (0-15 ms / 0-510 cm)
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Adjustable crossover (HPF / LPF / BPF - 20 Hz to 20 kHz)
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Selectable crossover slope (6 to 48 dB/Oct)
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Selectable phase shift for each channel (0˚ or 180°)
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Memory for 10 user presets (selectable with optional remote control)
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Two optional remote-control units available (GZDSP Remote or GZDSP Touch-Remote)
to adjust main and subwoofer level, select the presets and input mode
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LED power and status indicator (protection circuit)
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Power on delay
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High temperature / short circuit / overload protection circuit)
MANUAL
Feature list
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Related Manuals for Ground Zero GZDSP 4.80AMP
Summary of Contents for Ground Zero GZDSP 4.80AMP
- Page 1 DSP-SERIES AMPLIFIER MANUAL GZDSP 4.80AMP Feature list • 4-channel amplifier with integrated 8-channel signal processor (DSP) • High efficient 2 Ohm stable class D amplifier • 6-channel line input (RCA) • 6-channel high-level input (with auto-on function) • AUX input (3.5 mm socket) •...
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Page 2: Table Of Contents
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 Application examples of the GZDSP 4.80AMP Technical specifications Error diagnosis Warranty conditions - 2 -... -
Page 3: Important Safety Notes And Installation Instructions
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 4.80AMP and any plastic part or electronic component should be at least 3 cm (1.18”). -
Page 4: Audio Connections (Input)
Audio connections (input) OPTICAL INPUT To connect a digital audio source using the optical signal (SPDIF / stereo PCM) socket Attention: If the digital audio source has no level control, we strongly recommend using one of the (TOSLINK) available remote-control units. Otherwise the audio reproduction will be applied at max level! REMOTE CONTROL To connect one of the optionally available remote-control units socket... -
Page 5: Audio Connections (Output)
ATTENTION! Please note that the GZDSP 4.80AMP 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. -
Page 6: Pc Software Installation
The included USB cable should not be extended to avoid any kind of malfunction of the communication between the DSP unit and the PC. The LED next to the USB port on the unit will light up blue as soon as the GZDSP 4.80AMP has established a connection to the PC. -
Page 7: Usb Port Selection
Demo Mode (Offline Mode): It´s possible to use the software in offline mode without having the GZDSP 4.80AMP connected to the PC to become familiar with most of the features and to create sample setups. USB port selection After having the DSP unit selected at the Select Device menu, the RS232 Setting window will appear. -
Page 8: Wrong Com Port Error Message
Wrong COM-Port error message If this message will appear, the operating system assigned the wrong COM port or it was not possible to assign one of the COM1 to COM9 ports due to environmental issues of the PC. The COM port assignment may be checked with the operating system´s device manager. -
Page 9: Software User Interface
Software user interface SOURCE Input selection MAIN - RCA line or high-level input - 3.5 mm input socket SPDIF - Optical input (TOSLINK socket) Main volume control Gain - Main volume (-40dB to +12dB) Caution: The controls must be used carefully to avoid damaging the speakers. - 9 -... -
Page 10: Channel Selection
CH SETTING Channel selection Clicking the -Icon will link the relevant pair of channels allowing function adjustments simultaneously (Crossover / Slope / Equalizer) for both channels. Simultaneous adjustment of channel A and B Independent adjustment of channel A and B Clicking will copy the current adjustment of the left channel to the right channel. -
Page 11: Channel Matrix
The mentioned information to channel A, B, C and D refer to the speaker output of the GZDSP 4.80AMP. The signal of channel E, F, G and H will be available at the RCA line output (via line out harness). -
Page 12: Channel Configuration (Level Adjustment And Time Alignment)
GAIN & DELAY Channel configuration (level adjustments and time alignment) Select: Marking the channel as Selected allows grouping the respective channels together for combined adjustments of Gain and Delay. Gain: To adjust the output level of the respective channel Delay(ms): To adjust the time alignment of the respective channel. -
Page 13: Application Example (Time Alignment)
Application example (time alignment) All measured distances (cm) must be added to the according fields of the graphic Clicking the button will cause the calculation of the respective time alignment in milliseconds and transfer the data to the Delay list Further detailed adjustments can be edited to either the time alignment list (ms) or to the speaker distance window (cm) -
Page 14: Adjustment Of The Crossover
SLOPE Adjustment of the crossover Important: Before choosing the filter, a Speaker Type must be defined in window 3. When the setup consists of a front system connected to channel A/B and a rear speaker system connected to channel C/D, the Fullrange entry should be selected. -
Page 15: Frequency Chart And Equalizer
FREQUENCY DIAGRAM Function of the frequency diagram The frequency chart displays the adjustments of the 31-band equalizer (9) and the setting of the crossover (7) for every output channel or a pair of output channels. Furthermore, the curves can be adjusted individually using the mouse (drag&drop). EQUALIZER Adjusting the parametric 31-band equalizer The output channels A to F can be equalized by adjusting 31 frequency bands (20 - 20000 Hz) using... -
Page 16: File Dropdown Menu
Sets the unit to default settings Class-D AMP Setting No function Saves the current setting to the preset memory of the GZDSP 4.80AMP Write to Device* unit. At the following window, the preset number can be selected. Opens one of the available presets from the memory of the Read from Device* GZDSP 4.80AMP. -
Page 17: Application Examples Of The Gzdsp 4.80Amp
Above, these are just noncommittal examples. Ground Zero will not be legally responsible for any kind of damage of speakers or other components caused by wrong settings. -
Page 18: Technical Specifications
Technical Specifications Model GZDSP 4.80AMP Type 4-channel amplifier with integrated signal processor (DSP) 20 Hz – 20 KHz Frequency range (-3 dB) RMS Power @ 4 Ω 4 x 80 W (1% THD+N) CEA Standard CEA-2006-A RMS Power @ 2 Ω... -
Page 19: Error Diagnosis
To use the digital MOST audio signal of the OEM head-unit as source, an optional MOST to SP/DIF signal converter is requested. Connect the SP/DIF signal directly to the digital input of the GZDSP 4.80AMP using TOSLINK connectors. - 19 -... -
Page 20: Warranty Conditions
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. Ground Zero GmbH Erlenweg 25, 85658 Egmating, Germany Tel. +49 (0)8095/873 830 Fax -8310 www.ground-zero-audio.com...
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