Bbox by Atrend A201-12CP

Single 12" Subwoofer Enclosure for 02-14 Dodge Ram Quad Cab Trucks

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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.

Atrend vehicle specific enclosures are designed to fit within specific vehicle applications to help minimize the space of the subwoofer and also cleanly integrate into your vehicle without standing out.

General Features:

  • Single 12" Subwoofer Enclosure
  • Designed specifically for 02-14 Dodge Ram Quad Cab Trucks
  • Premium carpeted finish
  • 3/4" Mounting Baffle
  • Hardwood MDF construction
  • Rounded edges
  • Glued and Braced construction
  • Subwoofer mounting depth: 6.5"
  • Box volume: 0.85 cubic feet (per chamber)
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Note: Installs under the rear seat with Subwoofer facing up. Fits full bench and split seat models without affecting rear seating. Must remove metal fold out tray if equipped.

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.
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.
Vehicle Specific
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.
0.85 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.
0.85 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 clips
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.
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.
Dodge Ram

Port Details

Number of Ports
The number of ports the enclosure has.

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


Gainesville, GA

excellent choice

February 16, 2015

I was pleased with this item and the excellent sound from it--superb.

13 of 16 found this helpful

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Simi Valley, CA

Ram 12 inch sub box

August 24, 2016

Sounds ok but leaks a little bit so at hi volume is makes sub sound blown. Looks great tho!

0 of 0 found this helpful

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Nicely built box!

April 18, 2016

I was very surprised when this box came in. I'm very picky about my custom boxes and this one was made to perfection! Sounds great in my truck with my 12" CVR. This box was beautifully made with little to no errors. The insulation was a nice factor as well! I would highly recommend this box to my friends and anyone who is reading this review!!!

0 of 0 found this helpful

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Council Bluffs, IA

Verified Purchase
Huge dissapointment!

March 28, 2016

I would not recommend this box at all. I bought this box for a JL Audio W1 I'm shocked at how bad of a choice I've made by purchasing this box. After a few days the box rattled so bad I had to take it out and remove my new sub and now I'm listening to my factory sound system again. I called Sonic to see about a return and they won't do anything after the sub has been screwed into the box. I was recommended to sell the box on craigslist. So now I have a brand new sub and amp and no way to use it plus I'm out the money for this box. Also, if you listen to hip hop this box will not pick up lows whatsoever. Didn't sound too bad on rock music the first few days however. Sonic does have great customer service, I guess I should've planned on spending a lot more money on a nice ported box.

0 of 0 found this helpful

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Browse 7 questions and 16 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
It was a custom fit for my vehicle
Daniel W on Jun 23, 2017
I needed a single 12" sub woofer box for my 07 Dodge Ram quad cab. This one will be perfect. Like anything that needs installation, a little adjustment is expected. Be creative.
Mike S on May 31, 2016
Amazing price! Low shipping cost! Exactly what I was looking for!
William G on Dec 13, 2016
i have a ram
Liam m on Jun 22, 2015
Does this fit the A201-12CP?
jwilliams on May 5, 2015
Bbox A201-12CP
Bbox A201-12CP
Alpine SWR-12D4
Alpine SWR-12D4
· Add Answer · I Have This Question Too (9)
For the Bbox by Atrend A201-12CP, I dont see an option for either right or left side of the vehicle. Where can I specify this?
Zach L on Dec 10, 2014
Best Answer: Pretty sure its passenger side only.
Reply · Report · Joshua C on Dec 10, 2014
· Add Answer · I Have This Question Too (7)
Will this box fit the crew cab or just the quad cab?
David C on Jul 17, 2015
Best Answer: Both, I have a crew cab. Sounds awesome!
Reply · Report · Tong S on Jul 17, 2015
· Add Answer · I Have This Question Too (0)
will this sub box fit in my 2014 dodge ram 1500 quad cab ? and is the sub box for passenger side or drivers side?
A shopper on Feb 26, 2015
Best Answer: Hello,

The manufacture confirms fitment for Dodge Ram Quad Cab 2002 to 2014, but does not list Which side the enclosure is meant to fit.
Reply · Report · Customer SStaff on Feb 28, 2015
· Add Answer · I Have This Question Too (0)
Will an Alpine SWR-12D2 Type-R 12" Subwoofer work and be okay in this box?
connor b on Dec 27, 2016
Best Answer: Yes, that's what I have installed and very pleased with the sound and performance.
Reply · Report · Tong S on Dec 27, 2016
· Add Answer · I Have This Question Too (0)
Is the depth the mounting depth? My sub is 8.9 inches so I need a sizeable box
Steven M on Dec 15, 2014
Best Answer: Hello Steven,

No, the "Subwoofer mounting depth" will be the mounting depth. Of which, is 6.5" . However, this enclosure is mostly intended for Shallow Mount subs, because of the lip/counter just within the enclosure, that makes it difficult for full sized subs to fit. The lip/counter is there because of the way the truck is designed. Due to the depth you provided, your best approach is a Custom Enclosure.
Reply · Report · Sonic Electronix SStaff on Dec 16, 2014
· 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: Bbox by Atrend A201-12CP

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Bbox by Atrend A201-12CP

Single 12" Subwoofer Enclosure for 02-14 Dodge Ram Quad Cab Trucks


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NVX VSW122v2

600W RMS 12" VS-Series Dual 2-ohm Car Subwoofer


High-Performance NVX Speaker Wire

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


20 ft. of NVX SDTK20 Trunk Kit

Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.



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