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SPL CP-4X

Digital 4 Farad Power Capacitor with Blue LED Accent Lighting

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List price $89.95

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$59.95

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  • Digital 4 Farad Power Capacitor
  • True 4 Farad Capacitor for systems up to 4,000 watts
  • Digital blue voltage meter
  • Blue LED accent lighting
  • 1/4" Bolt post for power and ground connections
  • Working Voltage: 11 - 16DCV
  • E.S.R.(Equivalent Series Resistance): 0.0015 Ohm @ 120Hz
  • Capacitance Tolerance: +/-10%
  • Includes mounting hardware for a secure installation
  • Charging resistant included
  • Color is gloss black
  • Dimensions: 9-1/2"L x 4-1/2"W x 4"H
  • 1-year Manufacturer's warranty

Capacitor Specifications

Capacitance (farads)
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.
4 farads
LCD Meter Display
Displays the current voltage and/or other specification on an LCD readout.
Yes
Maximum Input Gauge Size
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.
1/0 AWG
Maximum Output Gauge Size
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.
1/0 AWG
Built-In Distribution Block
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.
No
Primary Color
This is the main color of the item.
Black
Illumination
This is the color of the illuminated LED lights on the unit.
Blue
Width
The width of the item from left to right (side-to-side) measured in inches.
4-1/2"
Height
The height of the item, measured from top to bottom, in inches.
4"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
9-1/2"

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
53%
4 Star
7%
3 Star
0%
2 Star
27%
1 Star
13%

Average Attribution Rating

Durability
3.9
Value
3.8
Features
3.9
Design
4.3
Usability
4.4
Kenneth

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
SPL CP-4X

May 23, 2014

The SPL CP-4X has a nice design, but material seems very fragile. I have this connected with a Precision Power class D with 1,000w rms. My dash lights and headlight still dims when the bass hits. The SPL CP-4X specs states that it can handle 4,000w. I think that this item needs to be reanalyzed for true ratings.

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Brad

Canada

Overall
Durability
Value
Features
Design
Usability
The best

April 23, 2014

I got this about a month ago and it looks so good in my car with the dark blue light I couldn't be more happier with it . You could so get this !!

0 of 0 found this helpful

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Terrys electrical service

Corning,ca

Overall
Durability
Value
Features
Design
Usability
for the squeling noise

October 30, 2013

it is not the capacitors problem you probably have the audio cable to close to the power supply and or the rms cord try running audio cables on the on the opposite side of those cord and it will greatly help with reducing squeal

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Thomas

West Palm Beach, FL

Overall
Durability
Value
Features
Design
Usability
Great Buy

September 20, 2013

It's small enough to fit under the seat works well ,nice display , but i would like to see it with a cap over the connections.

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David

Uniontown, PA

Overall
Durability
Value
Features
Design
Usability
Not much of a difference

July 30, 2013

I followed the instructions, letter for letter, and it didn't help my dimming headlights at all. I am using it solely on my JL XD600/1 and its hook up with a commercial grade 1/0 AWG ground and 4 AWG supply. I guess its time to upgrade the battery and alternator.

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Sky

Roslyn, WA

Overall
Durability
Value
Features
Design
Usability
EEEEEEEEEEEEE :(

January 23, 2013

The capacitor probably works fine. The lights still dim, but hey I have a stock alternator and battery so the cap isn't expected to totally solve that. I'm here to complain that every time I turn on my stereo it emits this ridiculous squealing noise. It's basically like the noise one of those old TVs makes but times 1,000,000. I've tried adjusting the voltage which is just about the only thing you can do since its the only control. The noise will go for awhile and then stop and then start, varying in intensity. It also only started when the weather started getting colder, but anyways I hate it :)

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basshead

mystic,CT

Overall
Durability
Value
Features
Design
Usability
Awesome piece of audio equipment!!

December 1, 2012

most undoubtedly worth buying. i installed this and am running 1200 rms watts. not only is the frequency response better throughout the bass range but the bass is felt more and more in your ear. also matches my amp!

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Brad

Merced ca

Overall
Durability
Value
Features
Design
Usability
Great value

October 4, 2012

Great product no problems at all smooth transaction and quick shipping

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Mark

Illinois

Overall
Durability
Value
Features
Design
Usability
Waste of money

September 11, 2012

4 farads? Highly unlikely. I'm using an 1800 watt amp and headlights still dim just as bad if not more. The only thing this is good for is an expensive volt meter. I do not recommend and if I could find the receipt i would return it.

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Joseph

Fernley, NV

Overall
Durability
Value
Features
Design
Usability
Good deal

August 10, 2012

Powerful, works and looks great. Easy setup and can handle my amp and subs with ease.

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Moe

Hilliard, ohio

Overall
Durability
Value
Features
Design
Usability
Lights still dim very badly

August 5, 2012

Bought this capacitor thinkig that it would at least somewhat reduce the dimming in my interior and head lights from my 1000 watt rms kicker amp. There was really no difference in the headlight dimming before and after installation, although its supposedly 4 farads. The only really good think about it is that it looks cool.

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Matthew

Virginia Beach, VA

Overall
Durability
Value
Features
Design
Usability
Great cap for the money!

July 18, 2012

The first SPL-CP-4X cap I ordered was defective. It would not come up to the battery voltage, and just sat there around 8 volts and beeped and flashed. I sent it back and Sonic troubleshot it and sent me a new one. I have installed the second one and it works great.

Pros:
It's 4 farads for $50 (not too shabby).
My electrical system has no voltage/amp fluctuation even at high volume.
Lights do not dim.
Amp has no strain to sound its best.
Auto shutoff after a few min (no need to advertise to thiefs that you have a system).
Solid construction and good terminals.

Cons:
It's bigger so if you're limited on space, verify the measurements first.
The blue lights are cool, but they are very bright, I put black tape over mine.

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philly b

torrington, WY

Overall
Durability
Value
Features
Design
Usability
spl cp-4x

February 28, 2012

I got this in yesterday and it works and looks great. Goes great with my 5500 spl gorilla amp and my 2 12" spl gorilla subs perfect combo.

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Clinton

scottsburg, IN

Overall
Durability
Value
Features
Design
Usability
great compaster

December 22, 2011

It work real well and it looks great!

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Ralphy

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability
:/

August 26, 2011

I'm no expert but I think a popping noise coming from the capacitor and a really bad smell coming after the pop is a bad sign, I think this thing just dided on me. :(

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Accessory Tools and Products

Accessories added

Scosche Ring Terminal (1/0 AWG)

Pair of 1/0 AWG ring terminals with 3/8" hole and red and black insulating sleeves.

Your Price $3.99

Streetwires Ring Terminals (1/0 AWG)

Pair of 1/0 AWG set screw power ring terminals.

Your Price $17.95

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.

Your Price $29.99

NVX XW0BL20

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

Your Price $84.99

Directed DEI Resistors (15-Pack)

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

Your Price $1.99

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Product Summary

Manufacturer

Model Number

CP-4X

UPC

709483030305

Weight

4.08lbs

Internal SKU

cp4x

Internal Product ID

37261

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: SPL CP-4X