Atrend JL Audio 12W7 Subwoofer Box (12W7SV)

12" Single Vented Enclosure with 1" Baffle for JL Audio 12W7 Subwoofers

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Strong, Reliable Enclosures

Engineered and manufactured using only the best additives throughout the production cycle. Hardwood MDF combined with true mitered corners and full inset dados. Atrend line of product is built for the high-end niche market.

From design to delivery, Atrend products are tested vigorously to ensure sound quality and accurate engineering. Working with only the latest in computer automated software and machinery, Atrend continues to be a trend setter in the marketplace. Atrend delivers quality results by utilizing only the most efficient engineering and manufacturing processes.

General Features:
  • 12" Single Vented Subwoofer Enclosure
  • Designed for JL Audio 12W7 Subwoofers
  • Sturdy 1" Baffle to Support the W7's Large Motor Structure
  • Made in the USA
  • Completely miter and dado end panels
  • Premium carpeted finish
  • Silver spring loaded terminal cups
  • 1" MDF construction
  • Glued and braced with fasteners
  • Dimensions: 15-1/2"D x 22-3/4"W x 15-1/2"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Speaker Box / Enclosure Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Subwoofer Cutout Shape
This is the shape of the enclosures cutout hole and defines the style of subwoofer that can be installed.
Round / Circle
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.
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.
Cutout Diameter or Length
The actual diameter of the hole in the subwoofer box. Length is the measured length per side of a square subwoofer or speaker opening.
Maximum Speaker Depth
Your subwoofer or speaker must not exceed this dimension in order to properly mount in this enclosure.
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
2.4 cubic feet
Box Volume (Each Chamber)
This is the total air space inside each chamber of the empty subwoofer enclosure. By matching this value with the recommended air space of the subwoofer, you will be able to know if the subwoofer will match this box.
1.85 cubic feet
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
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.

Spring posts (banana clip ready)
Box Exterior Color
The color of the enclosure's exterior/outer finish.
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.
Tuning Frequency
36 Hz
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.

Port Details

Number of Ports
The number of ports the enclosure has.
Tuning Frequency
36 Hz

Warranty and Return Policy

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

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Boynton beach fl

great buy

December 19, 2014

compliments my w7 great quality bass knocks!!!

19 of 23 found this helpful

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blue turd CRV

concord ca

not happy

March 20, 2016

i got this to put my alpine type R 12 in as the specs seemed like it would be great for daily use... man i was wrong... sub wouldn't fit and i had to cut the box up to fit my 12 and the range was garbage... it falls on its face with anything lower then 32hz... i wish i would have just gone with a sealed prefab or taken the time to build a basic box... this was the worst box i have ever used

0 of 0 found this helpful

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Great box!

February 1, 2016

I used this box for NVX VCW-12-2 paired with a JAD1200 and this set up works great. The box is 1.85 cf tuned around 36hz, this was almost perfect for what the NVX recommend for this sub. You can really see a difference in the construction compared to other boxes I have owned.

0 of 0 found this helpful

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Browse 6 questions and 7 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Match the specs for the sub
Chris B on Apr 25, 2017
online reviews and it was recommended on the sonic site as an accessory
Robert M on Sep 29, 2014
i have the 12w7ae in sealed enclosure...
matthew l w on Jun 19, 2016
Hello, this subwoofer box is designed only for JL subwoofer or other subwoofers also?
A shopper on Apr 14, 2017
Best Answer: I believe it's designed to work for any subwoofer. As long as the measurements are the same.
Reply · Report · Miguel M on Apr 14, 2017
· Add Answer · I Have This Question Too (0)
would this box be good for a hcca 122 orion?
pollo on Apr 9, 2016
Best Answer: This is a good box if it gives you the required air space for that subwoofer.
Reply · Report · Henry M on Apr 10, 2016
· Add Answer · I Have This Question Too (0)
what is the cf. of this box?
Steven A on Jan 22, 2015
Best Answer: Hello Steven,

Gross Cubic Feet ---- 2.4ft^3
Net Cubic Feet ------ 1.85ft^3
Reply · Report · Customer SStaff on Jan 24, 2015
· Add Answer · I Have This Question Too (0)
Would this be good for my NVX VCW124 sub?
Blake on Nov 28, 2014
Best Answer: Hello Nicholas,

Absolutely. In fact, the 1" MDF is meant to avoid as much enclosure-flex as possible, and withstand the weight of a W7 . For the NVX, this is only going to strengthen the sound - assuming its properly powered, of course. However, being that the enclosure is meant for a W7, the opening will surely be a bit more narrow than the VCW, and will need you to sand down until the woofer drops in. This is common in ALL Pre-Fab enclosures.
Reply · Report · Customer SStaff on Nov 28, 2014
· Add Answer · I Have This Question Too (0)
Would this box work for a Sundown X12 v2d2 it asks for 2.5 cu ft ported but would it make a big difference with this box at 2.4?
A shopper on May 9, 2017
· Add Answer · I Have This Question Too (0)

Product Summary


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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: Atrend JL Audio 12W7 Subwoofer Box (12W7SV)

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Atrend JL Audio 12W7 Subwoofer Box (12W7SV)

12" Single Vented Enclosure with 1" Baffle for JL Audio 12W7 Subwoofers


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JL Audio SGR-12W7

Aluminum Bar Style Subwoofer Grille that enhances the look of your W7 Subwoofer


High-Performance Streetwires Speaker Wire

25 ft. of 12 Gauge speaker cable with twisted pair construction for improved power flow and fine-stranded copper windings.



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