Gravity GR-50PX 50 Farad Car Audio Stiffening Capacitor

The Gravity GR-50PX is a 50.0-farad mobile-audio stiffening capacitor designed to support a vehicle electrical system during brief, high-current amplifier demands. It stores electrical energy and releases it quickly when bass transients place a sudden load on the power system. This can help reduce short-term voltage sag at the amplifier in appropriately designed car-audio installations.

This capacitor is intended for enthusiasts using high-output amplifiers and subwoofer systems where power delivery is an installation concern. It is a power-support component rather than an amplifier, battery, or alternator replacement. It is best suited to systems whose wiring, charging system, fusing, and grounds have already been selected for the amplifier load.

The GR-50PX is rated at 50.0 farads, with a 20V working-voltage rating and a 24V surge-voltage rating. Its listed ESR of 0.0015 ohm indicates low internal resistance for rapid charge and discharge behavior. The capacitor is designed to help maintain a more stable local power reserve during fast musical peaks.

A red digital voltage display provides a visible reading at the capacitor location, while the blue LED lightning window adds illumination for custom installations. Chrome-plated battery-post terminals and an integrated power/ground distribution block are listed features of the GR-50PX. These details make the unit appropriate for installations where the capacitor is visible as part of the system layout.

The GR-50PX can be used in car-audio applications and is also marketed for vehicles such as trucks, motorcycles, RVs, and ATVs. It should be installed close to the amplifier using appropriately sized, fused wiring and a short, secure chassis ground. If an audio system consistently exceeds the vehicle charging system's capability, upgrading the battery or alternator may still be necessary.

Key Features

• 50.0-Farad Capacity: Provides a substantial energy reserve for short amplifier-demand peaks.
• Low 0.0015-Ohm ESR: Supports fast energy transfer with low internal resistance.
• 20V Working Rating: Designed for automotive electrical-system power support.
• Red Digital Voltage Display: Lets the installer monitor voltage at the capacitor.
• Blue LED Lightning Window: Adds illuminated styling to a visible installation.
• Integrated Distribution Block: Combines power and ground connection points at the unit.

Design & Installation

The GR-50PX uses a capacitor-style cylindrical design with a blue LED lightning window, red voltage display, chrome-plated battery-post terminals, and an integrated power/ground distribution block. Its stated operating-temperature range is -20°C to +105°C. The unit is listed for surface mounting.

Mount the capacitor securely near the amplifier, keeping the power and ground runs short and using wiring, terminals, and fusing appropriate for the system. Charge a capacitor carefully during initial installation according to the supplied instructions; a charging resistor is commonly used to limit inrush current. Disconnect vehicle power before wiring and verify polarity before making final connections.