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Qpower QBASS12

12" Dual Vented Subwoofer Enclosure

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List price $99.99

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Qpower QBASS12

12" Dual Vented Subwoofer Enclosure


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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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General Features:

  • 12" Dual Ported Subwoofer Enclosure
  • Durable 5/8" Medium Density Fiberboard (MDF) construction
  • Total box volume: 3.2 cubic feet
  • Chambers connected behind the port
  • Dimensions: 13.25"D x x 36"W x 16.25"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Port Specifications:

  • Rectangular port
  • Number of ports: 1
  • Port dimensions: 3"Width x 11.75" Height 11"Depth

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.
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
3.2 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.
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
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.

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


Devils Lake, ND

Verified Purchase
Great Box!

July 16, 2015

I recently put my two Rockford Fosgate P3s in this box and was very surprised by the amount of bass it puts out. It doubled and maybe even tripled my bass from my last box. I would highly recommend this box to anyone.

9 of 11 found this helpful

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reno, NV

Verified Purchase
Qpower Qbass12

October 7, 2016

I have a 1998 Mitsubishi eclipse and ordered this box with 2 p3 punch 12s on a brutus 1516.1 over all it's a nice box sounds really good and gets loud

0 of 0 found this helpful

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Boston, Mass

Verified Purchase
Box but no screws

March 13, 2016

I purchased this box as a, gift for myself. Good product, but missing the screws.... I called to inform has been two weeks. Still waiting!

0 of 0 found this helpful

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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.

Your Price $49.95

NVX SDRLR1 Universal Roller Tool

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Banana Clip Terminals

These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.

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12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles or can be used for your polyfil.

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Browse 6 questions and 7 answers
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The picture represents the enclosure having round holes for the subwoofer however the specs list it as having square holes for the subwoofer so which is it, round or square ?

The cutout diameter for the enclosure is 11.75" but the recommended cutout diameter of my Hifonics HFX12D4 subwoofers is 10 15/16", is the hole too big and will I have an issue securing the subwoofers to the enclosure ?
George P on Mar 24, 2015
Best Answer: They are round subs. The 11.75 inches is the total size of the speaker including the metal ring with the screw holes in used to secure your sub to the box and the 10 15/16 is the size your hole in your box should be. Which is the 11.75 (11 3/4) minis the size of the mounting ring.
Reply · Report · chris s on Mar 24, 2015
· Add Answer · I Have This Question Too (0)
Would this amplifier work well with 2 of the Pioneer TS-W311D4 subs? There won't be any distortion or clipping or chance of blowing? Will the subwoofers fit in the Qpower QBASS12 enclosure?
Ethan C on Jun 6, 2016
QPower QBASS12
QPower QBASS12
Pioneer TS-W311D4
Pioneer TS-W311D4
Kenwood KAC-9106D
Kenwood KAC-9106D
Best Answer: Hi Ethan,

The Kenwood KAC-9106D will work well, but nowhere near the potential of the subwoofers. If you read the specs carefully you will see that two Pioneer TS-W311D4 require up to 800w RMS - at either 4ohms or 1ohm. The KAC-9106D is not stable at 1ohm so your only option is 4ohms which is only providing ~500W RMS - that means 250 to each subwoofer, almost half the full potential. This isn't a "bad" thing, but it certainly is not close to the full performance of the sub.

-There won't be any distortion or clipping or chance of blowing?

We can't answer this. The missing variable is the source unit and You. Both of these play more into determining if either of these negatives is put into effect, not the amplifier. The amplifier will simply amplify that which you give it. If you provide a dirty, distorted signal then it will amplify a dirty, distorted output.
Reply · Report · Rick MStaff on Jun 7, 2016
· Add Answer · I Have This Question Too (0)
would the Kicker CVR122 (10CVR122) work with this box according to the port space and everything?
cashinout1818 on Feb 1, 2016
QPower QBASS12
QPower QBASS12
Kicker 10CVR122
Kicker 10CVR122
Best Answer: I have the same box for my JBL power 12's I put my kicker in a bazooka tube so it's all in what your looking for hope this helps
Reply · Report · Michael C on Feb 4, 2016
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Where are the terminals? i don't see them in the picture
A shopper on Dec 2, 2015
Best Answer: They are right behind the sub. One for each hole
Reply · Report · Jace Estenson on Dec 2, 2015
· Add Answer · I Have This Question Too (0)
What is this box tuned to?
Jeffrey M on Jan 17, 2015
Best Answer: Hello Jeffrey,

The manufacture does not provide the Estimated port tuned frequency (fb) of their enclosure. This is very common, however, considering its a Pre-Fab enclosure. Nevertheless, from our experience, such enclosures often dial in at about 35Hz-39Hz .
Reply · Report · Customer SStaff on Jan 19, 2015
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does the box come with the terminals?
A shopper on Jan 4, 2015
Best Answer: Yes, it comes with the standard push terminals. These generally are red on one side and black on the other.
Reply · Report · chris s on Jan 4, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number






Internal SKU


Internal Product ID


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: Qpower QBASS12