GZHA MINI FOUR 24V

The Ground Zero GZHA MINI FOUR 24V is a compact 4-channel power amplifier from the HYDROGEN series, designed specifically for vehicles with a 24-volt electrical system. This makes it particularly suitable for use in trucks, commercial vehicles, and other vehicles that require a high-performance multi-channel power amplifier for 24 V.

Despite its compact size, the amplifier delivers up to 4 x 130 watts RMS into 2 ohms. Alternatively, two channels can be bridged at a time. In this configuration, 2 x 260 watts RMS at 4 ohms is possible. The highly efficient Class D circuit enables high output power while requiring relatively little space.

The GZHA MINI FOUR 24V features adjustable high-pass and low-pass filters for flexible tuning of the connected speaker system. By combining the filters, bandpass operation is also possible. This allows the power amplifier to be used, for example, with front and rear speakers or in various multi-way configurations.

In addition to the RCA inputs, there is a high-level input with an automatic power-on function. This allows the amplifier to be integrated into audio systems where the existing radio does not have standard RCA preamp outputs. The input sensitivity can be adjusted to suit the signal source being used.

A regulated power supply, generously dimensioned connectors, and protective circuits against thermal overload, short circuits, and overload ensure reliable operation. The compact aluminum housing measures just 135 x 52 x 210 mm, making it easy to install even in tight spaces.

Product Features

• 4-Channel Class-D Power Amplifier
• Specially designed for 24-volt vehicle electrical systems
• Suitable for trucks and other vehicles with a 24-volt power supply
• Highly Efficient Class-D Amplifier Technology
• 4 x 80 watts RMS at 4 ohms
• 4 x 130 watts RMS at 2 ohms
• 2 x 260 watts RMS at 4 ohms in bridge mode
• Maximum output power: 640 watts
• 2-ohm stable in stereo mode
• 4-ohm stable in bridge mode
• Adjustable High-Pass Filter
• Adjustable Low-Pass Filter
• Bandpass configuration available
• High-level input for speaker signals
• Auto-On Function via the High-Level Input
• 2 x stereo RCA inputs
• Adjustable Input Sensitivity
• Regulated Power Supply
• SMD Component Technology
• Power-On Delay
• Thermal Protection Circuit
• Short-Circuit Protection Circuit
• Overload Protection Circuit
• Generously sized connections
• Compact Heat Sink Housing
• "Ground Zero" lettering on the heat sink
• Connection port for optional GZTA Bass Remote level control
• Particularly compact dimensions
  
  

Technical Specifications

• Manufacturer: Ground Zero
• Model: GZHA MINI FOUR 24V
• Product Series: HYDROGEN
• Amplifier Type: 4-Channel Class D
• Operating voltage: 24-V vehicle electrical system
• Number of channels: 4
• RMS power at 4 ohms: 4 x 80 watts RMS at 1% THD+N
• RMS power at 2 ohms: 4 x 130 watts RMS at 1% THD+N
• RMS power (bridged at 4 ohms): 2 x 260 watts RMS at 1% THD+N
• Maximum output power: 640 watts according to CEA-2006-A at 10% THD+N
• Damping factor: > 100
• Frequency response: 5 Hz – 38 kHz (± 1 dB)
• Low-pass filter (LPF): 40 Hz – 4,000 Hz
• Low-pass slope: 12 dB/octave
• High-pass filter (HPF): 10 Hz – 500 Hz
• High-pass slope: 12 dB/octave
• Bandpass filter: 10 Hz – 4,000 Hz
• Bandpass slope: 12 dB/octave
• Input sensitivity: 300 mV – 6 V (± 5%)
• High-level input: Yes
• Auto-On via high-level input: Yes
• RCA inputs: 2 x stereo RCA
• Minimum stereo impedance: 2 ohms
• Minimum impedance in bridge mode: 4 ohms
• Remote Volume Control: Optional, GZTA Bass Remote
• Device fuse: 1 x 20 A, located under the bottom of the housing
• Dimensions (W x H x L): 135 x 52 x 210 mm
• Recommended cable cross-sectional area for power supply: at least 16 mm²
• Recommended speaker wire gauge: at least 1.5 mm²
• Recommended cable cross-sectional area for the high-level input: at least 1.0 mm²
• Recommended cable cross-sectional area for the remote: at least 0.75 mm²
• Protection Features: Temperature, Short-Circuit, and Overload Protection