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JL Audio CP208LG-W3v3

MicroSub™ slot-ported enclosure with dual 8" W3v3 subwoofers

16 Reviews | 10 questions - 15 answers

Item # 13628LW3V3

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825 Gardens Blvd

109 South Carlton

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Our take on the JL Audio CP208LG-W3v3

JL Audio's CP208LG-W3v3 MicroSub enclosed subwoofer system delivers impressive bass without needing a lot of power or taking up much space. This MicroSub handles up to 500 watts RMS, housing two 8" W3v3 subwoofers that offer impressive low end. The enclosure is designed from the ground up to get optimum performance from its drivers, so you get much more than just a box with speakers inside.

EJL Audio Built In USAngineered for performance

JL Audio's CP208LG-W3v3 MicroSub enclosed subwoofer system delivers impressive bass without needing a lot of power or taking up much space. This MicroSub handles up to 500 watts RMS, housing two 8" W3v3 subwoofers that offer impressive low end. The enclosure is designed from the ground up to get optimum performance from its drivers, so you get much more than just a box with speakers inside.

 CP208LG-W3v3 MicroSub enclosed subwoofer

JL Audio uses state-of-the-art automated woodworking equipment to fabricate the high-quality MDF enclosure with rugged automotive carpeting, steel-mesh grilles, 5-way binding posts, and solid internal wiring. The enclosure is finished and inspected by hand at the manufacturing facility in Florida to ensure that you get the bass that you expect from JL Audio.

specially designed, slot-ported enclosure

Small enclosure, big sound

The specially designed, slot-ported enclosure measures just over 5 inches thick — it'll fit just about anywhere but it's an especially good candidate for regular cab pickups. Its flared slot-port design cuts down on air turbulence and keeps your bass rich and clear. You'll enjoy thick low-frequency response from all of your music with this capable enclosure in your vehicle.

Product Highlights:

  • ported enclosure with two 8" W3v3 subwoofers
  • 5/8" medium density fiberboard construction covered with black carpet
  • steel-mesh grilles
  • 2-ohm total impedance
  • power handling: 200-500 watts RMS
  • frequency response: 28-250 Hz
  • sensitivity: 83 dB
  • 35-1/2"W x 11"H x 5-1/8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Ported subwoofer enclosure loaded with two 8W3v3-4 woofers
  • 2 Black metal grilles (installed)
  • Warranty information

Great fit for my 2014 Toyota Tundra, mobility is great, sits perfect on the floor.

William, Houston, TX


JL Audio CP208LG-W3v3 Reviews

Average Customer Review(s):

(16 Reviews)

Excellent sub/box combo

Anonymous from Auburn, AL on 11/15/2016

Crutchfield Customer Review (What's this?)

Very happy and satisfied with the purchase. I bought this to fit under the rear bench of a 2016 F-150 Super Crew. It fits perfectly and still allows unrestricted access to the 2/3 length utility tray adjacent to the back wall. I was slightly concerned 2 8" subs would be too weak of bass - WOW, was I wrong. This box/sub combo hits HARD! I'm running this with a JL Audio XD700/5v2 with 300 watts @ 2ohm going to the sub box. Plenty of power for this combo. I was also concerned the bandpass box would be "sloppy bass", again, I was wrong. JL did it right, it hits very tight, it sounds like a sealed box. Save yourself a lot of experimenting - this sub/combo is about as big as you can get to fit in the tight space under the rear bench with maximum bass. Worth the price.




William from Houston, TX on 8/21/2016

Crutchfield Customer Review (What's this?)

Great fit for my 2014 Toyota Tundra, mobility is great, sits perfect on the floor.

Pros: Size, and Sound

Cons: N/A

Great sound for the money

Lil John from Bastrop, Louisiana on 9/11/2015

Crutchfield Customer Review (What's this?)

Already had the single JL MicroSub 8 under the back seat of my '13 F-150 crew. Loved it until I installed these on the same amp. Sounds like 2-10" with a bigger amp. Running these on a Fosgate 300.1.

Pros: Compact (fits perfect under the rear seat of a '13 f-150). Big speaker sound out of the 2-8" subs. Great looking box

Cons: None


RD from Maryland on 9/6/2015

A bit expensive but totally worth it as a space saving, high sound quality set of compact subs.

Pros: Sound quality Compact size Amazing sound

Cons: price

Amazing Sound

MDBeats from Maryland on 8/23/2015

Crutchfield Customer Review (What's this?)

I have these JL's behind the rear seats of my 1996 Ford F350 crew cab. They are paired with the Alpine MRV-M500 and the sound is AMAZING!!. The low end bass sounds really nice and very loud (inside cab only) and it does not rattle anything. I highly recommend these subs if you have a pickup as it fits perfectly behind the rear seats.

Pros: Perfect fit behind the rear seats on my f350 crew cab.

Cons: Nothing.


Jj99 from Stanley, ND on 6/14/2015

Crutchfield Customer Review (What's this?)

Simply put, its amazing! All the lows without hitting bottom, all without taking my whole car up!!



Super thin, super sound

Bill from Chillicothe, OH on 5/14/2015

Crutchfield Customer Review (What's this?)

Awesome JL product! Super thin but super loud. Hits really low but can get very loud. Sounds like a box and subs much bigger than it is.

Pros: Easy to setup and install. Takes up hardly any space at all.

Cons: Thought it was a 2 channel system but has only one speaker level input. Had a 2 channel, 2ohm stable amp, but when I got it there is only one connection so you need a 1 channel( or mono) amp that is 2 ohm stable.

Big sound small pacakge

Mariah from Pueblo West on 1/8/2015

I've been around the mobile audio scene for over 15 years. Personally using solobarics, Rockford, JL and Alpine equipment. This setup is superior to what I was expecting. These are installed in a large boat in the cabin. They produce a wider range of bass than I was expecting from 8" sub's. I have 400rms going to them and they don't miss a beat. Things to consider- sound to size I think these take the cake. The enclosure- top notch. The subs- they are JL. I'd recommend them for use where space is limited or when you want to complete your range of sound. Perfect addition to my 4 M282's.

Pros: Size. Fit and finish. Sound quality.

Cons: I only have room for one set of them!

JL micro Sub

ChrisRock2g from Dade City , FL on 4/14/2014

Crutchfield Customer Review (What's this?)

Works as Advertised ! I have had lots of subs in the past , I love to try different things. I was running 2 Alpine bass subs in a sealed box, not getting the bass I wanted, was missing all the lower notes. My Alpines were resonating the high bass notes louder than the low ones. I did not have room to use a ported box on the Alpine 10's, so I got this ported JL box and gave it a try. Running a Alpine PDX-9 , Kenwood DNX 6990HD, The JL box did what it was designed to do , It plays loud, clear, and covers the bass spectrum very well , Gets low , sounds good with all types of music. My Alpine 10"s worked fine , but only sounded good on certain songs. The Alpines just dont sound good in a sealed box. The JL 8"s can keep up with the alpines in SPL and do a great job of making all songs sound good. These JL will not beat the block with loudness , but if you are looking for your own personal bass , these will do great. Good choice for all types of music , will outperform other speakers by far. Its hard to beat a factory tuned box. After all the stuff I have used in the past JL never disappoints me.

Pros: small form factor , plays all bass notes very well.

Cons: none

Don't Be fooled by the size!!

Jay Money from Rossville Ga on 3/30/2014

Crutchfield Customer Review (What's this?)

Very pleased with this enclosure. I have a JL JX500/1 running the subs and they sound spectacular. The enclosure is thin enough to place behind the back seats of a 2013 Toyota Tacoma. I have been installing my own stereos for 28 years and I'm amazed how much bass can come out of this enclosure. I play all kinds of music and it can handle the bass! You will not be disappointed. Great for a truck set up or Hatchback.

Pros: Sound quality is great.

Cons: Nothing! If you don't enjoy this enclosure . Something is wrong with you!

Starts window flex on 20 hz!

NellyNel from Down South on 5/17/2013

Crazy amounts of bass! Doesn't rob needed space in the hatch. Love that I can hit every low note with no prob. Have a jl 900/5, 500 rms running 2 ohms to the MicroSub box. Engineered and built in South Florida! United States of America. What else you want.

Pros: Surprising friends, winning a bet here and there. 2 yr warranty.

Cons: None. Hope they keep bumping

Believe the hype!

Justin from Nashville, TN on 4/4/2013

Crutchfield Customer Review (What's this?)

First off, if you are on the fence about this product just go ahead and hit the buy button right now. I was very hesitant to purchase this loaded box even after reading all of the positive reviews for the single sub version. I just simply did not believe that this box could produce sound on the level of two twelves or even two tens. Well, let me tell you, I am now a believer. I have a '99 Chevrolet S-10 single cab pickup and this box fits perfectly behind the seat. I am even able to leave the seats as far back as they will possibly go and there is still room for both this dual 8" box and my 1200 watt Audiobahn amp behind the seat. My last vehicle was a '95 Camaro and I had two Infinity Perfect 12.1's in a sealed box in the hatch. I am not joking....this box with the two 8" W3's hits harder and deeper than the two 12" Infinity's I had in the Camaro running the same exact amp. Now, some of the wow factor may be due to the greatly reduced amount of cabin space to fill in the S-10 but I still believe that these subs and box are very high quality and live up to all of the hype. Go for it. You will not regret it.

Pros: Very nice box, great quality, superb sound, tight, clean, and punchy bass!

Cons: Price is definitely high. Like others have said before me, you get what you pay for. (search for promo codes before you buy....I saved $25)

Great Sound from this compact sub setup

Bryan from Michigan on 11/28/2012

I put this in my 2012 Ford F-150 XLT and hooked it up to JL Audio JX500/1D amp. First off this sub enclosure will fit easily under the rear seat and the amp also fits under teh rear seat. This setup takes up very little room where space is a valuable comodity. The sound from this setup is amazing. I purchased and installed this setup and expected to fill out the sound in my truck and was blown away by how hard teh bass hits and how clean and clear the sound actually was. Don't be folled by the size it will provide you with more than enough punch into any type of music you listen to. I would also recomend the amp remote control. It comes in very handy as I switch from different types of music and have teh ability to change the bass output at my finger tips. I can't say enough about teh quality of sound, power of the punch and it can all fit under the seat without any alterations to teh truck. If you have an F-150 you won't find a better setup for any type of music.. HIGHLY RECOMEND!!!!!!!!!!!

Pros: Size, clean sound, amount of bass 8" can put out

Cons: Price is a little high but you get what you pay for


Scott C from LaGrange, KY on 8/27/2012

Crutchfield Customer Review (What's this?)

Installed behind the seat of a 2002 Chevy 3500 Crew Cab. Had to do a little trimming of the rear plastic panel, but i knew i would. As expexted JL quality and sound!!! Powered by the alpine v70 5 channel amp. (great little amp btw) HIGHLY recommended!!!

Pros: everything

Cons: nothing

Great Sub Box

Jamie R from Honolulu, HI on 8/20/2012

Crutchfield Customer Review (What's this?)

I was like a few of you that had to test this product to believe the quality and hype. I am an audiophile since I was a teenager and now I am now almost 40. I have had many brands and various sizes in my day. I must say I am impressed by this box on it's ability to handle the deep and punchy bass that I was looking for. It fit perfectly in my 07 single cab Tundra and it sounds amazing. I highly recommend this box if you are looking for a great all around sound for your car or truck. I listen to a wide range of music and it made the grade. I feel it is worth the price tag.

Pros: Well built american quality

Cons: price!


Pat from Fuquay Varina on 3/31/2012

I bought this to fill out the low end in my 2003 Roush Mustang convertible. I'm running Kicker 6x8 in my front doors and Kicker tweeters in the upper speaker pods, Kicker 6.5 in my rear all run with a Kicker ZX700.5. I have a Kenwood Excelon 6850 controlling it all. I was told that in order to get some bass from the trunk to the cabin would require a ported enclosure. There is NO room in the trunk of a convertible so I was pretty limited in choices. I bought this after reading some online reviews about how these "blow people away". Some say "people believe I'm running 10 or 12s". I'm from the old school and have run many, many set ups and can tell you that this is mediocre, at best. I'm throwing 420 watts RMS at these subs. They are rated at 250 RMS each sub so you would think that 210 per woofer would be perfect. Well, after tuning I hardly get any output out of these things. Raising the gain or God forbid the bass boost results in slightly more output heard in the cabin but when I pop the trunk the subs bottom out. Don't believe the hype. You're getting the output of two eight inch subs, PERIOD. Nothing more, nothing less.

Pros: Cosmetically attractive, JL name

Cons: You are paying for the JL name. Not enough bass to run in a trunk set up. Probably best to go under the rear seat of an extended cab truck. Expensive


Hands-on research

Product Research


Overview: The CP208LG-W3v3 MicroSub is a compact bass solution for vehicles with limited space. This slot-ported enclosure is loaded with two 4-ohm 8W3v3-4 woofers, internally wired in parallel to present a 2-ohm load.

Enclosure Design: The enclosure features top quality MDF (medium density fiberboard), cut using state-of-the-art CNC woodworking equipment, and covered with high grade automotive carpeting. Extensive interior bracing permits the use of thinner MDF that maximizes the enclosure's internal volume relative to its exterior volume. Each driver has its own airspace and is protected by a black steel-mesh grille.

Flared Ports: The enclosure has side firing slot ports. The flared port opening minimizes turbulence and improves overall fidelity. The ports are 1-1/2" high and 4-1/8" wide at the openings and wrap around two walls of the enclosure to produce the necessary low tuning frequency.

Driver: The 8" W3v3 drivers have the following features:

  • Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method aimed at improving dynamic motor behavior. As a result of DMA optimization, W3v3 motors remain linear in motor force over a very long range of excursion, and also maintain a highly stable fixed magnetic field in the gap over a wide power range. The result is vastly reduced distortion, faithfully reproduced transients, and tight, clean, articulate bass.
  • Floating Cone Attachment Method (FCAM): JL Audio's patented FCAM technology is an innovative method of bonding the surround/cone assembly to the voice coil/spider assembly. This assembly technique ensures proper surround geometry in the assembled speaker for better excursion control and dynamic voice coil alignment.
  • Vented Reinforcement Collar (VRC): The Vented Reinforcement Collar is a composite structure that addresses two issues related to reliability. By reinforcing the critical junction between the cone, voice coil and spider, the VRC greatly reduces failures due to glue breakdown or material weaknesses. It does this by greatly increasing adhesive contact area and providing stress relief to the spider material at excursion extremes. the VRC also feature slots that facilitate air flow directly onto the voice coil windings to reduce thermal compression effects and enhances reliability.
  • Spider/Lead Wire Assembly: The W3v3 features a unique spider, coil and terminal subassembly which is assembled prior to installation in the speaker frame for optimum alignment and glue-joint integrity. The spider is insert-molded into a composite carrier tray which also incorporates the terminal assembly and lead wire strain relief features for enhanced reliability and optimal alignment of parts. The flying lead wires are carefully controlled and strain-relieved without resorting to woven-in lead wires, which can degrade spider performance.
  • Elevated Frame Cooling: The elevated frame design of the W3v3 delivers high-velocity air flow through slots directly above the top plate to the voice coil of the speaker. This not only enhances power handling, but also sound quality by minimizing dynamic parameter shifts and power compression.
  • Surround Stress Relief: By creating a radiused feature on the edge of the cone, stress is relieved from the surround material at maximum forward excursion, resulting in longer life and more consistent surround behavior.
  • Customizable Trim Ring: The woofer comes with a removable ring made of black ABS plastic which can be painted to match the installation theme and create a personalized look. You can purchase optional grille mesh inserts which are specifically designed to fit into the inner diameter of the trim ring.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Had the single speaker version and wanted more bump. Sounds much better with two. [ Robert  Dec 08, 2016 ]
I saw and heard this sub in a local stereo shop. I bought it here for $100 less. [ Thor  Nov 22, 2016 ]
Fits [ T  Mar 02, 2016 ]

10 questions already asked

Probably as long as the inside measurement under the seat from bracket to bracket match outside diameter of the box. We fit one under the rear of an f-150 but the seat sat up a little because of the hump in the center. [ GEORGE  Feb 25, 2017 ]
When properly powered, the JL CP208LG-W3v3 should produce plenty of volume in a Jeep with the top down. If you would like to discuss further, feel free to contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Larry  Feb 10, 2017 ]  Staff
I'm afraid we don't have any information on the available space under the rear seats in your '14 Wrangler Unlimited. However, the JL Audio CP208LG-W3v3 measures 35-1/2" (width) x 11" (height) x 5-1/8" (depth) if you want to try and measure the space on your own to verify fit. If you would like to discuss further, feel free to contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Larry  Feb 09, 2017 ]  Staff
There is only 1 terminal pair input (1 positive/ 1 negative). [I'm running a 5 ch JL amp. Using 4 of the channels for the door speakers, and the last channel is 300wx1 at 2ohm. Plenty of power for me. Shakes mirrors, hits hard.] If you just want to power this sub, a mono (1 channel) sub would do the trick. 500w at 2 ohm would be a lot of power. [ Ryan  Jan 21, 2017 ]
Yes there's only the 1 terminal but with 500 w job amp put both outputs to the one speaker input and spearkers sound good. Have the same setup in my 2016 f150 and it sounds good for 2-10's. [ PAUL  Jan 21, 2017 ]
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Kenny  Oct 17, 2016 ]  Staff
The weight of the JL Audio CP208LG-W3v3 alone isn't provided--however, the shipping weight (including the box its shipped in) is 36lbs. So the enclosure and dual woofers are likely somewhere between 32-35lbs. If you would like to discuss further, feel free to contact an Advisor directly by phone (1-800-324-9695) or online chat. I hope that helps! [ Larry  Oct 05, 2016 ]  Staff
I have this exact setup. Works awesome [ Ryan  Jan 21, 2017 ]
Yes the XD700 will be fine. I was wanting to do the same amp in my truck..Good choice. [ JOSE A  Dec 23, 2014 ]
Yes the XD700 will be fine. I was wanting to do the same amp in my truck..Good choice. [ JOSE A  Dec 23, 2014 ]
I would like that should be more than enough power. This sub rocks. You will be surprised. [ STEVEN J  Dec 22, 2014 ]
I have the JL Audio JX500/1D with the bass control knob. A quality amplifier of this output should do. [ JOSE A  Jun 23, 2014 ]
I went with the Pioneer GM-D8601. It is 500 watts at 2 ohms and comes with the bass boost know while only being $200. It sounds Great in the back of my 2005 4runner. Highly recommended for the price. Hope this helps. [ TREVOR  Jun 23, 2014 ]
For details on installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation. If you run into any issues during installation our Tech Support team will be happy to help. [ Jeff  Jan 01, 2014 ]  Staff
This would not be recommended as you would need to add a separate set of terminals for the second subwoofer wiring (which would mean modifying the box). For details on a sub box that might fit your needs please contact an Advisor by phone or online chat. [ Jeff  Dec 31, 2013 ]  Staff