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JL Audio 6W3v3-4

W3v3 Series 6.5" 4-ohm subwoofer

24 Reviews | 4 questions - 14 answers


Our take on the JL Audio 6W3v3-4

JL Audio Built In USA Remarkably realistic bass

JL Audio built their W3v3 subwoofers to deliver powerful, accurate bass with a medium-power amplifier. Their extensive motor assembly research resulted in a design that ensures smooth, precise cone movement at any power level. Exclusive cooling features shunt heat away from the sub's internal motor structure for long term durability and reduced distortion.

JL Audio W3v3 exploded view

Well-rounded performance

JL Audio W3v3 interior

The 6W3v3-4 subwoofer boasts a 6.5" mineral-filled polypropylene cone with a distinctive metallic JL Audio medallion. A patented design eases the stress felt by the rubber surround during cone movement, for increased reliability and consistent bass output. The removable, customizable trim ring accepts optional JL Audio grilles, and can be painted to enhance your installation. This W3v3 sub works well in a sealed enclosure.

To drive this single subwoofer, we recommend a mono amplifier rated between 120 and 225 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

Small but seem to be very well made

Jeffrey, Fairfield, CT

What's in the Box:

  • One 6.5" Subwoofer
  • Black plastic trim ring
  • Owner's Manual

Product Highlights:

  • 6.5" 4-ohm subwoofer
  • mineral-filled polypropylene cone with nitrile-butylene rubber surround
  • power range: 40-150 watts RMS
  • peak power handling: 300 watts
  • frequency response: 30-300 Hz
  • sensitivity: 80.49 dB
  • top-mount depth: 4-3/16"
  • sealed box volume: 0.15 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

JL Audio 6W3v3-4 Reviews

Average Customer Review(s):

(24 Reviews)
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Hands-on research

Product Research

Enclosure Compatibility


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.

Enclosure Compatibility

Recommended Sealed Box Volume: The sealed box size recommended by JL Audio is 0.15 cu/ft. A diagram is provided in the owner's manual for a sealed box with external dimensions of 9" W x 9" H x 6.75" D, assuming 3/4" thick material. (If you are using 5/8" thick materials, you should subtract 1/4" from each dimension.)

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?

JL reputation for quality products [ Michael  Jun 01, 2017 ]
Rough fitment for "96 Town Car OEM (JBL) rear cabinet. Clearly some minor modification will be required, however the car was inexpensive and I am not currently disposed to exceed the purchase price with major audio upgrades. This speaker appears to have basic dimensions that I can make work, and various reviews on other make / model sites were encouraging. [ Greg  May 23, 2017 ]
Fantastic small subwoofer [ john  Mar 18, 2017 ]
good sound from a small sub. will fit in stock location. [ Nicholas  Nov 04, 2016 ]
Good product [ Reginald  Jun 17, 2016 ]
Replacement for mine that's blown [ Matthew F.  May 12, 2016 ]

4 questions already asked

Yes it will and that is a great idea I would get Crutchfield to hook you up with some fitted spacers and just make sure that it is airtight with no portEnter an answer to this question. [ Charles  Sep 30, 2016 ]
I don't know. The actual measured dimensions and the cut sheet agreed. [ Gene  Sep 28, 2016 ]
you would need to be much more specific. bazooka makes so many different tubes, and they all come with speakers in them, and have different sizes, and configurations. they're really ported and set up for the speakers they designed and come with, not some other random speaker you throw in there. [ evan  Sep 28, 2016 ]
No, these are not marine speakers. They may be ok in Light moisture conditions. I use them in my Jeep Wrangler & have had no problems with them. [ JOHN  Jan 30, 2016 ]
Have just 1 of these in the back of my soft top Jeep Wrangler. It is boxed per the specs outlined in the manual that came with the woofer. My top leaks every time it rains and soaks the entire area where it is located. This thing keeps on rocking. Have had no issues with the performance thus far. [ J. Scott  Jan 29, 2016 ]
This is a 6" subwoofer. And it isn't water proof, but if it was mounted in an enclosure. It would be water resistant. It has a polymer cone with a rubber surround. [ Michael  Jan 29, 2016 ]
II don't think that they are. [ Mark  Jan 29, 2016 ]
I Can't say much on your first question but I purchased this for a land rover discovery rear doors and it was a tight fit. So it may be too large for a bike. Hope this helps somewhat. [ SIAFA  Aug 11, 2015 ]
Rider, your question posts to customers like me that purchased the speakers. I'm no audiophile but I installed my speakers in a Mazda MX-6. For my application they are great subs. Know that the speakers are not water resistant so you would have to insure that rain and washing will not be an issue. Also know that these speakers need a sizable enclosure (speaker box) of which you may not have enough room to make. Check the instructions, I want to remember that they're online. I also want to remember the enclosure size is published there. I strongly suggest you call Crutchfield and present your question to them. They may have a better suggestion for you. I think you're on track considering JL speakers. I love mine and they out performed my expectations in my convertible. I'm very happy with them. No buyers remorse here. Best regards and drive safe. [ Roberto  Aug 10, 2015 ]
Well, it depends on what your price range is. I'm running a 5 chanel amp in my vehicle, and the 5th channel is putting 200 watts to the sub. And it sounds great. So, look for an amp that makes 100-150 watts RMS. Since the spec's state 150 watts max. And it will sound great for you as well. If you want ideas for amps: Alpine MRX-M55, JL Audio JX500/1D, Kenwood Excelon X500-1, Alpine MRV-M500. Any of these will power it and make it sound good. [ Michael  Dec 17, 2014 ]
XD700/5 - JL Audio 5-Channel 700W Class D Amplifier is the amp I used because I purchased JL speakers for the rest of my setup. This subwoofer was still small enough that it would fit in my factory subwoofer box and I wanted to improve the system but keep it looking like it came from the factory. [ Andres  Dec 17, 2014 ]
Paul, unfortunately I was unable to use this sub and returned it. I bought two of these to install in the lower fairings on my motorcycles but they didn't fit. I was going to drive them with a Biketronics 180/channel amp. Based on the specs and my research, I would use about a 150 watt rpm amplifier. [ DAVID  Dec 17, 2014 ]
If running just these subs I would use the JL Audio Slash 300/4v3. But if looking for an all around system amp. I went with the JL Audio XD700/5v2. [ JOHN  Dec 17, 2014 ]
I am using a linear power 452iq. It is a old school cheater amp so I am not 100% sure of its output but it is rated @ 100 watts rms mono. I would use a clean power amp rated between 100-150 watts rms. Just make sure you are using a quality clean power amp. If you are looking for a new amp I would look at a jl xd300/1 or the focal f1.350 or for any old school amp by us amps or linear power [ cyclist01  Dec 16, 2014 ]