Car Audio & Stereo Capacitors | Digital 1.0 Farad and more Capacitors | Sonic Electronix

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About 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.
Get The Right Capacitor
Reduce the strain on a vehicle's electrical system.
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Popular Brands in Capacitors


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Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42R)

Combo package for extra savings with a digital cap and black amp wiring kit

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Combo package for extra savings with a digital cap and black amp wiring kit

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

5
Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42R)

Combo package for extra savings with a digital cap and black amp wiring kit

In stock

$57.99 (13.80% off)
$49.99

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Combo package for extra savings with a digital cap and black amp wiring kit

$49.99

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NVX V Series RCA Audio Interconnect Cable

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

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Heavy-Duty Grommet

This Stinger heavy duty grommet is the perfect and safe solution to running wires through the firewall.

$6.99

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Car Audio Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

$19.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42R).
Stinger SSCap2M

Stinger Select Brushed Aluminum 2 Farad Power Capacitor w/ Digital Display

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Stinger Select Brushed Aluminum 2 Farad Power Capacitor w/ Digital Display

• 2 Farad Digital Capacitor
• Carbon Fiber Design
• 2000 Watt Systems
• Digital Display

Stinger SSCap2M

Stinger Select Brushed Aluminum 2 Farad Power Capacitor w/ Digital Display

In stock

$74.99 (40.01% off)
$44.99

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Stinger Select Brushed Aluminum 2 Farad Power Capacitor w/ Digital Display

$44.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

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Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

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Don't see the accessory you're looking for?
View all available accessories for the Stinger SSCap2M.
NVX XCAP1F

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

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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)

20
NVX XCAP1F

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

In stock

$124.99 (28.00% off)
$89.99
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3 Special offers
  • Free NVX Black Reusable Cloth Face Mask with purchase!
  • 50% Off XCAP1F 1.0 Farad Capacitor with Amplifier Purchase
  • FREE XCAP1F 1.0 Farad Capacitor with Amplifier Purchase!

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

$89.99

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NVX Precut Power/Ground Wire (4 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and blue insulation.

$15.99

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Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the NVX XCAP1F.
Planet Audio PC10F

10 Farad Capacitor with Digital Voltage Display and Blue Illumination

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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)

4
Planet Audio PC10F

10 Farad Capacitor with Digital Voltage Display and Blue Illumination

In stock

$179.99 (48.34% off)
$92.99

Item Added to Cart

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10 Farad Capacitor with Digital Voltage Display and Blue Illumination

$92.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Planet Audio PC10F.
Stinger SPC505

5 Farad Pro Digital Hybrid Capacitor

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5 Farad Pro Digital Hybrid Capacitor

• Digital 5 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

9
Stinger SPC505

5 Farad Pro Digital Hybrid Capacitor

In stock

$239.99 (50.00% off)
$119.99

Item Added to Cart

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5 Farad Pro Digital Hybrid Capacitor

$119.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Stinger SPC505.
Boss CPBK2

2 Farad Capacitor w/ Digital Display

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2 Farad Capacitor w/ Digital Display

• 2 Farad Capacitor with digital voltage display
• Red Digital Voltage Display
• Audible warning tones

1
Boss CPBK2

2 Farad Capacitor w/ Digital Display

In stock

$52.48 (14.35% off)
$44.95

Item Added to Cart

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2 Farad Capacitor w/ Digital Display

$44.95

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Boss CPBK2.
Sound Storm Labs (SSL) 2 Farad Capacitor C22

2 Farad Capacitor with Digital Display (Black Finish)

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2 Farad Capacitor with Digital Display (Black Finish)

• 2 Farad Capacitor
• Red Digital Voltage Display
• Audible warning tone for reverse polarity, low battery voltage
• Rated voltage: 16 VDC

1
Sound Storm Labs (SSL) 2 Farad Capacitor C22

2 Farad Capacitor with Digital Display (Black Finish)

In stock

$63.00 (31.76% off)
$42.99

Item Added to Cart

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2 Farad Capacitor with Digital Display (Black Finish)

$42.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Sound Storm Labs (SSL) 2 Farad Capacitor C22.
Soundstream SCX-4

4.0 Farad Digital Capacitor (Sound Stream SCX4)

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4.0 Farad Digital Capacitor (Sound Stream SCX4)

4.0 Farad Digital Capacitor • 12-16 DC Input Voltage • Blue LED Viltage Display • Flashing LEDs • Bolt Post for Ring Terminal • Chrome plated chassis

9
Soundstream SCX-4

4.0 Farad Digital Capacitor (Sound Stream SCX4)

In stock

 
$84.99

Item Added to Cart

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4.0 Farad Digital Capacitor (Sound Stream SCX4)

$84.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Soundstream SCX-4.
Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42BK)

Combo package for extra savings with a digital cap and black amp wiring kit

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Combo package for extra savings with a digital cap and black amp wiring kit

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

1
Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42BK)

Combo package for extra savings with a digital cap and black amp wiring kit

In stock

$57.99 (5.17% off)
$54.99
Hide info
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3 Special offers
  • 50% off a Belva Wiring Kit and Capacitor with Amp Purchase!
  • 10% off a Belva Wiring Kit and Capacitor with Amp Purchase!
  • Add a Wiring Kit and Capacitor with Amp Purchase!

Item Added to Cart

B1DK42BK small

Combo package for extra savings with a digital cap and black amp wiring kit

$54.99

Keep Shopping

NVX V Series RCA Audio Interconnect Cable

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

Add
Heavy-Duty Grommet

This Stinger heavy duty grommet is the perfect and safe solution to running wires through the firewall.

$6.99

Add
Car Audio Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

$19.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42BK).
Stinger SPC5010

10 Farad Pro Digital Hybrid Capacitor

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10 Farad Pro Digital Hybrid Capacitor

• Digital 10 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

8
Stinger SPC5010

10 Farad Pro Digital Hybrid Capacitor

In stock

Only 1 Left!

$299.99 (51.67% off)
$144.99

Item Added to Cart

SPC5010 small

10 Farad Pro Digital Hybrid Capacitor

$144.99

Keep Shopping

NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Stinger SPC5010.
Stinger SSCap5M

Stinger Select Brushed Aluminum 5 Farad Power Capacitor w/ Digital Display

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Stinger Select Brushed Aluminum 5 Farad Power Capacitor w/ Digital Display

• 5 Farad Digital Capacitor
• Carbon Fiber Design
• 5000 Watt Systems
• Digital Display

Stinger SSCap5M

Stinger Select Brushed Aluminum 5 Farad Power Capacitor w/ Digital Display

In stock

Only 1 Left!

$155.99 (56.44% off)
$67.95

Item Added to Cart

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Stinger Select Brushed Aluminum 5 Farad Power Capacitor w/ Digital Display

$67.95

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Stinger SSCap5M.
Boss CAP18

18 Farad Digital Hybrid Capacitor with Blue Illumination

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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

9
Boss CAP18

18 Farad Digital Hybrid Capacitor with Blue Illumination

In stock

$174.99 (42.86% off)
$99.99

Item Added to Cart

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18 Farad Digital Hybrid Capacitor with Blue Illumination

$99.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Boss CAP18.
Boss CPBK3.5

3.5 Farad Capacitor

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3.5 Farad Capacitor

• 3.5 Farad Capacitor
•Red LED Digital Voltage Display
• Audible Warning Tone for Reverse Polarity
• Audible Warning Tone for Voltage Overload
• Audible Warning Tone for Low Battery Voltage

Boss CPBK3.5

3.5 Farad Capacitor

In stock

$67.48 (33.33% off)
$44.99

Item Added to Cart

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3.5 Farad Capacitor

$44.99

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Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Boss CPBK3.5.
Power Acoustik PC1.5F

1000W 1.5 Farad Digital Capacitor with Red Digital Display

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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

34
Power Acoustik PC1.5F

1000W 1.5 Farad Digital Capacitor with Red Digital Display

In stock

$79.95 (18.71% off)
$64.99

Item Added to Cart

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1000W 1.5 Farad Digital Capacitor with Red Digital Display

$64.99

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NVX Precut Power/Ground Wire (4 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and blue insulation.

$15.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Power Acoustik PC1.5F.
Power Acoustik PCX-30F

30.0 Farad Digital Hybrid Capacitor (PCX30F)

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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

33
Power Acoustik PCX-30F

30.0 Farad Digital Hybrid Capacitor (PCX30F)

In stock

$169.99 (23.53% off)
$129.99

Item Added to Cart

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30.0 Farad Digital Hybrid Capacitor (PCX30F)

$129.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Power Acoustik PCX-30F.
T-Spec V8-3DDC

Digital Capacitor 3.0 Farad Distribution Top

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Digital Capacitor 3.0 Farad Distribution Top

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

23
T-Spec V8-3DDC

Digital Capacitor 3.0 Farad Distribution Top

In stock

$116.00 (15.52% off)
$98.00

Item Added to Cart

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Digital Capacitor 3.0 Farad Distribution Top

$98.00

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the T-Spec V8-3DDC.
Power Acoustik PCX-5F

5.0 Farad Digital Capacitor (PCX5F)

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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

34
Power Acoustik PCX-5F

5.0 Farad Digital Capacitor (PCX5F)

In stock

$149.99 (40.00% off)
$89.99

Item Added to Cart

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5.0 Farad Digital Capacitor (PCX5F)

$89.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Power Acoustik PCX-5F.
Sound Storm Labs (SSL) C352

3.5 Farad Capacitor with Digital Voltage Display and Audible Warnings

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3.5 Farad Capacitor with Digital Voltage Display and Audible Warnings

• 3.5 Farad Capacitor
• LED Voltage Display
• Audible Warnings
• Color: Black
• Rated Voltage: 16V DC

1
Sound Storm Labs (SSL) C352

3.5 Farad Capacitor with Digital Voltage Display and Audible Warnings

In stock

$78.00 (30.83% off)
$53.95

Item Added to Cart

C352 small

3.5 Farad Capacitor with Digital Voltage Display and Audible Warnings

$53.95

Keep Shopping

NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Sound Storm Labs (SSL) C352.
Boss 2 Farad Capacitor CPRD2

2 Farad Capacitor with Digital Display (Black Finish)

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2 Farad Capacitor with Digital Display (Black Finish)

• 2 Farad Capacitor
• Red Digital Voltage Display
• Audible warning tone for reverse polarity, low battery voltage
• Rated voltage: 16 VDC

Boss 2 Farad Capacitor CPRD2

2 Farad Capacitor with Digital Display (Black Finish)

In stock

Only 3 Left!

$52.48 (18.08% off)
$42.99

Item Added to Cart

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2 Farad Capacitor with Digital Display (Black Finish)

$42.99

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NVX Precut Power/Ground Wire (1/0 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and gunmetal gray insulation.

$29.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Boss 2 Farad Capacitor CPRD2.
Soundstream SCX1.5

1.5 Farad Capacitor with LED Voltage Display

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1.5 Farad Capacitor with LED Voltage Display

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

8
Soundstream SCX1.5

1.5 Farad Capacitor with LED Voltage Display

In stock

 
$48.99

Item Added to Cart

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1.5 Farad Capacitor with LED Voltage Display

$48.99

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NVX Precut Power/Ground Wire (4 AWG)

5 ft. of NVX's HyperFlex power/ground cable with high-current transfer and blue insulation.

$15.99

Add
Directed DEI Resistors (15-Pack)

Pack of resistors with various values (ohms) perfect for the initial charge of your capacitor.

$3.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Soundstream SCX1.5.

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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

Useful Resources:

To find out more about car audio capacitors, call our friendly support team at 1-661-257-9993