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Make your amp run more efficiently with car audio capacitors. Find a wide selection of cap sizes including 1, 2, 3 and 5 Farad.

Capacitors

Car audio capacitors are a great addition to any aftermarket audio system that is in need of a little extra power. Capacitors store a temporary electrical charge that can be released during periods of extra power strain. If a vehicle has dimming headlights when music is played, a capacitor could solve that problem.
1 - 1.9 Farad
2 - 2.9 Farad
3 - 4.9 Farad
5+ Farad

Top 20 in Capacitors

True 10 Farad Stiffening Hybrid Capacitor with Digital Display and Built-in Distribution Block

• For High-Powered systems
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

$169.99

IN STOCK

1.0 Farad Capacitor with Digital Red Display

• 1.0 Farad Power Capacitor
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

Free Gift: 1.0 Farad Capacitor with Amp Purchase!

$24.99

IN STOCK

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

• For Systems Up To 1200 Watts
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

$69.99

IN STOCK

Digital Capacitor 3.0 Farad Distribution Top

• 3.0 Farad Digital Capacitor
• Voltage Meter
• Impact Resistant Polycarbonate Cover
• Simple Mounting System

$69.99

IN STOCK

5.0 Farad Digital Capacitor (PCX5F)

• 5.0 Farad hybrid digital power capacitor
• 24V DC foil-carbon internal capacitor
• Digital blue voltage display
• Tinted plexiglas with blue LED lights inside for viewing
• Electronics polarity circuit
• Over voltage protection circuit

$57.99

IN STOCK

2.0 Farad Digital Capacitor (Sound Stream SCX2)

2.0 Farad Digital Capacitor • 24VDC Surge Rated • PCB with Blue LED Display • Flashing LEDs • Mounting Brackets • Chrome plated

25% off a Soundstream 2 Farad Capacitor with LED Display

$44.95

IN STOCK

8 Farad Digital Hybrid Capacitor with Blue Illumination

• 8 Farad Digital Hybrid Capacitor with Blue Illumination
• 3-Digit, super bright LED voltage meter
• Voltage measure accurate to +/- 0.1VDC
• Blue illuminated window with light following played music
• Automatic sleep status when volume is low
• Warning tones protection

$51.99

IN STOCK

Only 3 Left!

1000W 1.5 Farad Digital Capacitor with Red Digital Display

• Digital Capacitor
• 1.5 Farad
• Great for Systems Around 1000 Watts
• Red Digital Voltage Display
• Warning and Flashing Light LEDs
• Black Chrome
• Automatic Shutoff Protection

$39.95

IN STOCK

Optidrive 6 Farad Oval Hybrid Super Capacitor

• Digital 6 Farad Capacitor
• Blue LED Voltage Display
• Working Voltage: 21DC

$49.99

IN STOCK

Only 1 Left!

Hybrid 2.0 Farad Digital Stiffening Capacitor

• Increases quality of sound
• Increases level of bass
• Platinum plated

$139.99

IN STOCK

1.5 Farad Capacitor with LED Voltage Display

• 12-16 DC Input Voltage
• Red LED Voltage Meter
• Bolt Post for Ring Terminal

25% off a Soundstream 1.5 Farad Capacitor with LED Display

$37.95

IN STOCK

30.0 Farad Digital Hybrid Capacitor (PCX30F)

• 30.0 Farad hybrid digital power capacitor
• 24V DC foil-carbon internal capacitor
• Digital blue voltage display
• Electronics polarity circuit
• Over voltage protection circuit
• Platinum plated ring terminals

$89.99

IN STOCK

10 Farad Capacitor with Digital Voltage Display and Blue Illumination

10 Farad Digital Hybrid Capacitor with Blue Illumination • 3-Digit, super bright LED voltage meter • Voltage measure accurate to +/- 0.1VDC • Blue illuminated window • Warning tones for reverse polarity connection, over voltage (>17VCD), or low battery voltage (<10VDC)

$59.99

IN STOCK

Only 1 Left!

1.0 Farad Capacitor

• 1.0 Farad Capacitor
• 16V to 20V peak
• Solid-brass top reduces stripping; platinum plated
• Increase the peak power of your amp
• Reduce dimming headlights

$74.99

IN STOCK

3 Farad Digital Power Capacitor

• Digital 3 Farad Capacitor
• Bright Red LED Voltage Display
• 12V Working Voltage
• 14V Surge Voltage
• Ring Terminals
• Chrome with Black Accents
• Includes Mounting Hardware

$59.95

IN STOCK

Hybrid 1.0 Farad Digital Stiffening Capacitor

• Hybrid 1.0 Farad Digital Stiffening Capacitor
• Increases quality of sound
• Platinum plated
• Solid brass top helps reduce stripping

$99.99

IN STOCK

3.0 Farad Digital Capacitor (PCX3F)

• 3.0 Farad hybrid digital power capacitor
• Digital blue voltage display
• Tinted plexiglas with blue LED lights inside for viewing
• Electronics polarity circuit
• Over voltage protection circuit
• Platinum plated ring terminals

$49.99

IN STOCK

10 Farad Capacitor With Blue Digital Voltage Display

• Digital 10 Farad Capacitor
• For Systems Up To 5000 Watts
• Bright Blue LED Voltage Display
• Low-Level Input Voltage: 16 Volts
• High-Level Input Voltage: 20
• Color: Black/Chrome

$57.99

IN STOCK

Only 1 Left!

Hybrid 10 Farad Digital Stiffening Capacitor

• 10 farad Hybrid Digital Capacitor
• Increases quality of sound
• Increases level of bass
• Platinum plated

$229.99

IN STOCK

18 Farad Digital Hybrid Capacitor with Blue Illumination

• 18 Farad Digital Hybrid Capacitor with Blue Illumination
• 3-Digit, super bright LED voltage meter
• Voltage measure accurate to +/- 0.1VDC
• Blue illuminated window with light following played music
• Automatic sleep status when volume is low
• Warning tones protection

$67.99

IN STOCK

Capacitors Information

Car Audio Capacitors:

A car audio capacitor is an electrical circuit element used to store charge temporarily. This should not be confused with a battery, as a cap only temporarily holds a charge. It generally consists of two metallic plates separated by a dielectric. It is also used as a crossover component to filter out lower frequencies and allow higher frequencies to pass.

Audio capacitors charge and discharge very fast, stabilizing the voltage to the amplifier. Stabilizing the voltage helps the amplifier stay cooler and run more efficiently because the amplifier is not straining to get the power it needs. Stabilizing the voltage helps an amplifier reduce distortion and produce more power consistently.

A farad is the measurement unit used to determine the size of a capacitor. One farad to 500 watts RMS is the ratio used to determine the size of capacitor needed to supply enough power to an amplifier. While using a cap much larger than recommended will not damage an audio system, it is not recommended because of the unnecessary strain it puts on the vehicles electrical system.

Which Capacitor Should I Get?

Installing a capacitor is a great way to help stabilize the voltage being sent to the amplifier. This can help reduce the strain on the vehicle’s electrical system, reduce dimming lights, and improve sound quality of the audio system. Since each car is different and unique, knowing which capacitor is best for your system is important to know. As a general rule of thumb, Sonic Electronix uses the following information as a guideline for selecting capacitors:

Capacitor Farad RatingTotal System Wattage
Under 1 Farad0-499 Watts
1-1.9 Farad500-999 Watts
2-2.9 Farad1000-1499 Watts
3-4.9 Farad1500-2499 Watts
5+ Farad2500-Up Watts




To find out more about car audio capacitors, call our friendly support team at 1-877-289-7664.