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Ground Zero  |  Barcode: 4037072008340

GZTC 1.0FX

Regular price 99,00€
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Wiring Wizard & Port Calculator

Use our wiring assistant for easy speaker and subwoofer connections! The correct connection is important for your amplifier! Low-impedance operation can damage the amplifier! The datasheet shows you which connection each amplifier is designed for!

Our port calculator shows you the tuning characteristics of your enclosure! The net volume is always particularly important here; calculate the subwoofer’s actual resonant chamber volume beforehand to get the correct result. The net volume is calculated by subtracting all dead spaces and is crucial for enclosure design.

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Name: Ground Zero Audio

Address: Erlenweg 25 85658 Egmating, Germany

Email: info@ground-zero-audio.com

Website: https://www.ground-zero-audio.com/

European Manufacturer: Yes


The Ground Zero GZTC 1.0FX is a high-performance power capacitor designed to stabilize the onboard voltage in car audio systems. It stores electrical energy and makes it immediately available during brief periods of high current demand—such as during powerful bass pulses. This reduces voltage dips, improves the amplifier’s power supply, and supports more consistent power output. The built-in digital voltage display allows for continuous monitoring of the vehicle’s voltage, while the integrated protection circuit and charging electronics ensure safe operation. Thanks to its rugged aluminum housing and the included mounting brackets, the capacitor can be installed flexibly and vibration-proof within the vehicle.

Technical Specifications

  • Model: Power Capacitor / Power Cap
  • Capacity: 1.0 farad (± 50%)
  • Maximum operating voltage: 20 volts DC
  • Equivalent Series Resistance (ESR): < 0.0020 ohms
  • Operating temperature: -20 °C to +90 °C
  • Digital voltage display with white backlight
  • Built-in surge protection
  • Integrated Charging and Discharging Electronics
  • Sturdy aluminum housing
  • Includes mounting brackets
  • Can be installed in any orientation
  • Recommended placement: as close to the amplifier as possible
  • Manufacturer's recommendation: approximately 1 farad of capacitance per 500 watts of RMS amplifier power

Benefits at a Glance

  • Stabilizes the onboard voltage during high load peaks
  • Ensures a constant power supply to the amplifier
  • Can reduce voltage drops and flickering lights
  • Rapid energy delivery due to very low ESR
  • Continuous voltage monitoring via a digital display
  • Safe startup thanks to integrated charging electronics
  • Rugged and low-vibration installation in the vehicle
  • Ideal for complementing high-performance car audio systems

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Frequently asked questions about the GZTC 1.0FX

What is the capacitance of the GZTC 1.0FX capacitor in farads?

The GZTC 1.0FX is a 1-farad power cap, i.e. a capacitor with a capacitance of exactly one farad. This capacitance is sufficient to effectively smooth out voltage spikes in high-powered car audio systems.

Why do I need a 1 farad capacitor in my car?

A 1 farad capacitor, such as the Ground Zero GZTC 1.0FX, smooths out the brief current spikes caused by bass notes. It prevents voltage dips, which can be noticed as flickering spotlights or a loss of power from the amplifier.

How do I connect the GZTC 1.0FX correctly?

The Powercap is connected in parallel between the battery and the amplifier. It is important to ensure the correct polarity and to charge it slowly via a resistor to prevent arcing. It should be fitted as close to the amplifier as possible.

What amplifier power rating is the Ground Zero GZTC 1.0FX suitable for?

As a rule of thumb, you should allow for approximately 1 farad of capacitance for every 1,000 watts RMS of amplifier power. The GZTC 1.0FX is therefore ideally suited for subwoofer power amplifiers up to around 1,000 watts RMS.

How long does a 1 farad capacitor last in a car?

When installed and used correctly, a high-quality capacitor such as the GZTC 1.0FX can last for many years. Its service life depends on the load and the temperature conditions inside the vehicle.

Can I combine several GZTC 1.0FX capacitors?

Yes, you can connect several Powercaps in parallel to increase the total capacitance. In very high-power systems with multiple amplifiers, this can be useful for ensuring optimum voltage stability.

Where can I find the data sheet for the GZTC 1.0FX?

You can find technical details and specifications for the Ground Zero GZTC 1.0FX in the manufacturer’s product description. This lists all the key figures, such as voltage resistance, dimensions and connection details.

GZTC 1.0FX - Here's what our expert has to say

A good power capacitor is like insurance for your system – you only realise its value when you really need it.

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