Expert Service 1-877-289-7664 [Hours]

2nd Annual Warehouse Sale- more products added!

JL Audio CP108LG-W3v3

(4 ohms Final Impedance) Single 8" 8W3v3-4 Subwoofer Loaded in a Slot-Ported Truck Sub Enclosure Box

Out of Stock - Backorder
|

List price $299.95

$239.95

with warranty

You Save: $60.00 (20.00%)

Add an Extended Warranty

Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

Get FAST answers from customers ASK a Question See questions answers

Bundled Savings with this Product

=

25% off an NVX Sound Damping Trunk Kit with Purchase!

With purchase of any NVX subwoofer, you can save 25% on an NVX trunk kit that contains 20 sq. ft. of quality sound dampening material. This material quiets vibrations, stops rattles, and increases the subwoofer SPL.

15.00

16637

4

JL Audio CP108LG-W3v3

$239.95

+

25% OFF

NVX SDTK20

$59.99

Special Price $44.99 ($59.99 if purchased separately)

NVX SDTK20

• Eliminates Road Noise
• Quiets Vibrations
• Stops Rattles • Increases SPL
• Reduces Heat
• Simple To Install
• Easy To Form Aluminum
• Four Step Peel and Stick Installation
• Five 18" x 32" Pieces

(Offer 1 of 1)

Combined Total Price

$284.94

You Save $15.00

W3v3 FlatWedge: A Powerful Low-Profile Ported System

Right from the JL Audio factories comes a unique solution for tight spaces, integrating a highly capable W3v3 driver into a very low-profile, slot-ported design. Excellent sound quality and surprising output capability with moderate power. Featuring flared slot-port design for minimal turbulence and improved fidelity, as well as a very low-profile enclosure design that is less than 5 inches thick. An included steel mesh grill will protect your investment from any accidents.

JL Audio PowerWedge systems have defined value in engineered low-frequency systems for over ten years. Our newest models deliver enhanced power handling and are smaller than previous models, thanks to the W1v2 subwoofer drivers. Built in JL Audio's Miramar, Florida factory, utilizing state-of-the-art CNC woodworking equipment, PowerWedge systems feature top-quality MDF construction, steel-mesh grilles, five-way binding post connectors, high-grade automotive carpeting and JL Audio ECS internal wiring. If you are looking for an intense sub-bass experience without breaking the bank, these new slot-ported systems should definitely be on your short list!

Subwoofer Specifications:

  • Single 8" 8W3v3-4 Subwoofer Loaded in a Slot-Ported Truck Sub Enclosure Box
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Impedance: Single 4 ohms
  • Mineral-filled polypropylene cone woofer
  • Rubber surround
  • DMA optimized motor system
  • Elevated frame cooling
  • Vented reinforcement collar
  • Floating Cone Attach Method (FCAM)
  • Insert molded suspension, coil, and terminal-sub assembly
  • Surround stress relief design
  • Customizable trim ring
  • Sensitivity: 83 dB
  • 1-year SonicElectronix.com warranty (subwoofer only)
Enclosure Specifications:
  • Slot-Ported Truck Sub Enclosure Box
  • Low-profile slot-ported carpeted enclosure
  • Black carpeted finish
  • Steel mesh grille for protection
  • Dimensions: 5-1/8"D x 18-5/8"W x 11"H

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
8"
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Single
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
250 watts
Total RMS Power Handling
This is the total RMS power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total RMS power handling for all of the subs combined.

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend giving your subwoofer(s) 75% - 90% of the recommended RMS rating.
250 watts
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
500 watts
Total Peak Power Handling
This is the Total Peak Power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total peak power handling for all of the subs combined.

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements.
500 watts
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Mineral-Filled Polypropylene
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Rubber
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
83 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
10 mm

Enclosure Specifications

Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Vented / Ported
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
1
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Truck Style, Slim with Angled Front
Height
The height of the item, measured from top to bottom, in inches.
11"
Width
The width of the item from left to right (side-to-side) measured in inches.
18-5/8"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
5-1/8"
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
3/4"
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
1
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Binding posts
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Black
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Carpet

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.9
Features
4.9
Design
5.0
Usability
5.0

ljk

Denver, CO

Overall
Durability
Value
Features
Design
Usability

Awesome Bass From Small Package

April 19, 2014

I recently purchased this JL setup because I wasn't satisfied with my shallow 10" Pioneer TS-SW2501S2 mounted in the sealed downfiring enclosure that Pioneer makes for this sub. The shallow Pioneer just couldn't reproduce the lower frequencies without some distortion. This 8" JL does much better than the 10" Pioneer. You'd probably get even better low-end with a real 10" or 12" sub with proper enclosure, but if you are low on space, or just want a simple pre-loaded setup, this thing would be hard to beat. I'm throwing 200 watts RMS at it from a Fosgate P300x1 and it sounds awesome. It will fit under the rear seat of a 2014 Tundra Double Cab, but you need to position it further up below the seat because the rear of the seat bottom has a hard support that will dent the grill when you put down the seat. I think it would be fine under the seat if you remove the grill, but I've left mine on and just position the enclosure so that the seat will go down. The enclosure is not sticking out at all from under the seat either. I'm seriously tempted to upgrade my wiring to 4 guage and throw a second one of these in my rig. My only suggestion for improvement would be a 2 ohm version or dual voice coil version for more wiring and amp options. Also, this setup is a little expensive. If it were priced at $200, I would give it 5 stars for value.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Derek

Stockbridge,GA

Overall
Durability
Value
Features
Design
Usability

Perfect fit for my Porsche 944

September 10, 2012

This sub thumps huge bass for it's small size. It fits perfectly in the rear hatch floor of my Porsche 944. I power it with a 1200 watt Infinity amp with the low pass filter on. Thumps Hard for it's size, and you can feel it and see the rear view mirror shake. . Give it a try, you will not be dissappointed.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Boom

San Diego, CA

Overall
Durability
Value
Features
Design
Usability

Perfect small sub...

May 17, 2012

Replaced a factory sub with this one because I wanted better bass response, and this thing delivers. It's not a 12" or 15" with a ton of cubic space, but it's solid and perfect for listening to music. For its size and compact box, this sub is amazing. I listen to rap, hip-hop, rock, metal and even country; all sound great with this sub. If you are a basshead, this isn't for you, but if you like to hear and even feel that kick drum or bass guitar, then this is for you. Bottom line is you will not be disappointed.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Jon

Br, LA

Overall
Durability
Value
Features
Design
Usability

Damn good sub for the size and price

April 18, 2012

This thing is a beast for the size and price. Most people that hear it in the car think its a 10" or a 12". From outside the vehicle its nearly silent which how I like it. It's just not quite enough air movement for a bass head like me so I'll be moving up to a 10w7 in a HO box with this thing pulling duty in the GTI. Great if you want a bit of extra boom. Not great if you want the whole block to hear you coming.

0 of 0 found this helpful

Help our customers find the most helpful reviews

TW

Iowa

Overall
Durability
Value
Features
Design
Usability

Perfect Fit for my 2001 Honda CRV

April 18, 2010

This sub booms big bass for it's small size. It fits perfectly below the rear floor of my Honda CRV with the rear cargo tray removed. I power it with a 150 watt pioneer amp with the low pass filter on. Thumps Hard for it's size, and you can feel it and see the rear view mirror shake. Sufficient for me, and a completely stealth install. Bass does not thump outside the vehicle... but inside it does. Give it a try, you will be impressed.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Mikee Mike

Charleston, SC

Overall
Durability
Value
Features
Design
Usability

Awesome sounding subwoofer

March 1, 2010

I have always had 2 12s or 2 10s in the past. This was a stretch for me to downsize to an 8. I have an 07 Toyota Tundra DC and this sub fits under the back seat so I can still use the back seats for passengers. Let's talk about the sound. I was blown away by how much output this small sub puts out. I listen mostly to hip hop, some rap and rock, and these things are up to the challenge. Don't expect to feel the bass pounding away, but you can sure hear a lot, esp. for an 8! What I like about these too is the sound quality--tight hitting bass without too much that it drowns out the mids and highs. The 8W3 is a wonderful woofer that can handle some power. I am giving them around 250 watts RMS off of a Kicker amp and they sound great! Don't expect heart pounding bass from a single 8, but you do get some great bass, save some space, and a great quality product from JL Audio. I could fit another under the other rear seat, so I may just have to get another in the future!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Mike

Broomfield, Colorado

Overall
Durability
Value
Features
Design
Usability

Wow, doesn't sound like an 8"

August 29, 2009

I was blown away by the performance of this sub. I ended up buying two thinking that would be best but I might have over done it...can you really do that though? This sub, paired with the JL 250 1 v2 sounds absolutely incredible in my 2010 Toyota Tundra. I would highly recommend this sub. I have a Kicker L2 in my car and these two sound just as good. Very nice!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Accessory Tools and Products

Accessories added

NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

Your Price $39.99

NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

Your Price $59.99

NVX Sound Dampening Rubber Roller (SDRLR1)

Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

Your Price $12.99

Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

CP108LG-W3v3

UPC

699440931335

Weight

19.00lbs

Internal SKU

cp108lgw3v3

Internal Product ID

16637

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: JL Audio CP108LG-W3v3