Audio Capacitors

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Capacitors are rated in farads, and at times microfarads or millionths of a farad. The more farads the capacitor is rated at, the more electrical charge (and wattage) the capacitor will hold. Capacitance is defined as the property of storing an electrical charge between two separate conductors.
Displays the current voltage and/or other specification on an LCD readout.
This is the main color of the item.
A built-in distribution block simply means that the item includes a distribution block. The built-in distribution block will split the single power input into a multiple power output.
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
This number refers to the maximum size of wire that will fit into the output connector(s) of the capacitor, battery terminal, or any other connector with an wire output.
NVX XCAP1F

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

XCAP1F main
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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)

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23
Was $124.99 Details
$79.99

In stock

XCAP1F small

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Price: $79.99

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Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
Belva BB2D

2.0 Farad Capacitor with Digital Red Display, Perfect for systems up to 2000W

BB2D main
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2.0 Farad Capacitor with Digital Red Display, Perfect for systems up to 2000W

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

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Get it Fri, June 16 to VA. Order $49+ to ship free.

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25
Was $89.99 Details
$39.95

In stock

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BB2D small

Item added to your cart.

Price: $39.95

Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
Stinger SPC5010

10 Farad Pro Digital Hybrid Capacitor

SPC5010 main
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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

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11
Was $349.00 Details
$179.99

In stock

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

SPC5010 small

Item added to your cart.

Price: $179.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
Belva 1.0 Farad Capacitor

1.0 Farad Capacitor with Digital Red Display

BB1D main
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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

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Get it Fri, June 16 to VA. Order $49+ to ship free.

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77
Was $79.99 Details
$34.95

In stock

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

BB1D small

Item added to your cart.

Price: $34.95

Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
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

B1DK42R main
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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

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FREE shipping to VA. Get it Fri, June 16

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5
Was $99.99 Details
$59.99

In stock

• 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

B1DK42R small

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Price: $59.99

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Belva 1 Farad Capacitor with 4 Gauge 2-Channel Amp Kit (B1DK42BL)

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

B1DK42BL main
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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

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FREE shipping to VA. Get it Fri, June 16

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6
Was $99.99 Details
$59.99

In stock

• 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

B1DK42BL small

Item added to your cart.

Price: $59.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
The Install Bay IB-CAP1F

1.0 Farad Digital Car Audio Capacitor

IB-CAP1F main
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1.0 Farad Digital Car Audio Capacitor

• 1 Farad Capacitor
• Red Digital Voltage Display
• Perfect for Systems up to 1000 Watts
• 18 Volt Surge
• Silver
• Includes Mounting Hardware

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Get it Fri, June 16 to VA. Order $49+ to ship free.

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19
Was $49.99 Details
$39.99

In stock

• 1 Farad Capacitor
• Red Digital Voltage Display
• Perfect for Systems up to 1000 Watts
• 18 Volt Surge
• Silver
• Includes Mounting Hardware

IB-CAP1F small

Item added to your cart.

Price: $39.99

Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
Boss 2 Farad Car Audio Capacitor, LED (2 Pack)

Boss 2 Farad 20-Volt Digital Voltage Car Audio Power Capacitor, LED (2 Pack)

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Boss 2 Farad 20-Volt Digital Voltage Car Audio Power Capacitor, LED (2 Pack)

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

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

CPBK2,CPBK2 small

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Price: $100.98

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
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

B1DK42BK main
Go to item page

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

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FREE shipping to VA. Get it Fri, June 16

empty

1
Was $99.99 Details
$59.99

In stock

• 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

B1DK42BK small

Item added to your cart.

Price: $59.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Lowest price in 30 days
Massive Audio RCX

4 Farad Capacitor for the Massive Audio DBx4 Amplifier

RCX main
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4 Farad Capacitor for the Massive Audio DBx4 Amplifier

• 4 Farad Capacitor
• Handles Extra Power Needs
• Plug-and-Play, No Complicated Wiring
• Color: Brushed Aluminum

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1
Was $129.95 Details
$49.99

In stock

• 4 Farad Capacitor
• Handles Extra Power Needs
• Plug-and-Play, No Complicated Wiring
• Color: Brushed Aluminum

RCX small

Item added to your cart.

Price: $49.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
EXCLUSIVE
Belva BB2D 2 Farad Capacitor with Red Digital Voltage Meter + 0 Gauge Amp Kit

Package Includes 2 Farad Cap + Premium 0 Gauge Wire Kit

BB2D,BAK02BL main
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Package Includes 2 Farad Cap + Premium 0 Gauge Wire Kit

• 1/0 Gauge Complete 2-Channel Amplifier Installation Kit
• ANL Fuse Holder With A 150 Amp ANL Fuse
• For Car Audio Systems Up To 1500 Watts RMS
• Premium Powerflex Power And Ground Wire
• Helical Twist Construction Audio Interconnect RCA Cables
• 30% Copper CCA Wire
• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

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FREE shipping to VA. Get it Fri, June 16

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38
Was $159.98 Details
$79.99

In stock

• 1/0 Gauge Complete 2-Channel Amplifier Installation Kit
• ANL Fuse Holder With A 150 Amp ANL Fuse
• For Car Audio Systems Up To 1500 Watts RMS
• Premium Powerflex Power And Ground Wire
• Helical Twist Construction Audio Interconnect RCA Cables
• 30% Copper CCA Wire
• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BB2D,BAK02BL small

Item added to your cart.

Price: $79.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
EXCLUSIVE
Belva 1.0 Farad Capacitor + Belva 2000 Watt Max Handling Amp Kit

BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42 Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit

BB1D_BAK42 main
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BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42 Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

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FREE shipping to VA. Get it Fri, June 16

empty

10
Was $99.99 Details
$59.99

In stock

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BB1D_BAK42 small

Item added to your cart.

Price: $59.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
EXCLUSIVE
Belva BB2D 2 Farad Capacitor with Red Digital Voltage Meter + 4 Gauge Amp Kit

Package Includes a 2 Farad Cap + Premium 4 Gauge Wire Kit

BAK42BK,BB2D main
Go to item page

Package Includes a 2 Farad Cap + Premium 4 Gauge Wire Kit

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

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FREE shipping to VA. Get it Fri, June 16

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56
Was $149.98 Details
$60.91

In stock

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BAK42BK,BB2D small

Item added to your cart.

Price: $60.91

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Install Bay 1 Farad Capacitor + Over 40% Off 1600 Watt RMS Handling Amp Kit

List price $99.98: IB-CAP1F 1.0 Farad Digital Car Audio Capacitor + AK4 4 Gauge Amplifier Power Kit with RCA Interconnect Cables

AK4,IB-CAP1F main
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List price $99.98: IB-CAP1F 1.0 Farad Digital Car Audio Capacitor + AK4 4 Gauge Amplifier Power Kit with RCA Interconnect Cables

• 1 Farad Capacitor
• Red Digital Voltage Display
• Perfect for Systems up to 1000 Watts
• 18 Volt Surge
• Silver
• Includes Mounting Hardware
• 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• Perfect for 1600 Watts Amplifier Setup
• 17ft. Blue Power Cable
• 3ft. Black Ground Cable
• 17ft. Blue RCA Cable

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FREE shipping to VA. Get it Fri, June 16

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132
$63.98

In stock

• 1 Farad Capacitor
• Red Digital Voltage Display
• Perfect for Systems up to 1000 Watts
• 18 Volt Surge
• Silver
• Includes Mounting Hardware
• 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• Perfect for 1600 Watts Amplifier Setup
• 17ft. Blue Power Cable
• 3ft. Black Ground Cable
• 17ft. Blue RCA Cable

AK4,IB-CAP1F small

Item added to your cart.

Price: $63.98

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
Belva 1.0 Farad Capacitor + Belva 2000 Watt Max Handling Amp Kit (Black/Grey)

List price $149.98: BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42BK Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit (Black/Grey)

BB1D_BAK42BK main
Go to item page

List price $149.98: BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42BK Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit (Black/Grey)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

1
Was $99.99 Details
$59.99

In stock

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BB1D_BAK42BK small

Item added to your cart.

Price: $59.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX Precut Power/Ground Wire (4 AWG)

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

$19.99

$14.99

Add to cart
EXCLUSIVE
Belva BB2D 2 Farad Capacitor with Red Digital Voltage Meter + 8 Gauge Amp Kit

Package Includes 2 Farad Cap + Premium 8 Gauge Wire Kit

BAK82,BB2D main
Go to item page

Package Includes 2 Farad Cap + Premium 8 Gauge Wire Kit

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

shipping truck icon
FREE shipping to VA. Get it Fri, June 16

empty

90
Was $139.98 Details
$64.91

In stock

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

BAK82,BB2D small

Item added to your cart.

Price: $64.91

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
BOSS CAP18 FARAD Digital Car Audio Capacitor Cap Digital + 4 Gauge Amp Kit

18 Farad Digital Hybrid Capacitor with Blue Illumination Package

Go to item page

18 Farad Digital Hybrid Capacitor with Blue Illumination Package

• 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

• 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

BAK42BK,CAP18 small

Item added to your cart.

Price: $169.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart
Boss CPBK2 Capacitor + Belva 8GA Amp Kit

2 Farad Capacitor w/ Digital Display + 8GA amp kit

Go to item page

2 Farad Capacitor w/ Digital Display + 8GA amp kit

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

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

BAK82,CPBK2 small

Item added to your cart.

Price: $77.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
BOSS CAP18 18 Farad Digital Capacitor + 8 Ga Amp Kit Package

18 Farad Digital Hybrid Capacitor with Blue Illumination + Amp Kit Package

Go to item page

18 Farad Digital Hybrid Capacitor with Blue Illumination + Amp Kit Package

• 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

• 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

BAK82,CAP18 small

Item added to your cart.

Price: $169.99

Allstate logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

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

Go to item page

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)

empty

33
Was $399.99 Details
$219.99

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

XCAP10H small

Item added to your cart.

Price: $219.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, Available 24/7
Essential add-ons
NVX XW0BL20

20 Ft Pre-Cut Piece of 1/0 Gauge EnvyFlex Power or Ground Wire

$109.99

$109.99

Add to cart

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    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 vehicle's 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:

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      The perfect accessory for installing multiple car batteries in a vehicle. We offer a variety of different battery isolators designed for different battery amp ratings.

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      Find different sizes, lengths, and colors of power/ground wires.

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