Belva BBX212RD (RED)

3.70 Total Cu Ft - Dual 12" 3/4" MDF Ported Subwoofer Box Enclosure with Custom Red Baffle

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• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard Construction
• High Gloss Red Panel
• Durable Black Carpet
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals
• Total box volume: 3.7 cubic feet

Learn more about the bbx212rd

We apologize

This item has been discontinued


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General Features:

  • 12" Dual Ported Subwoofer Enclosure
  • Red high gloss front face board
  • Covered in black carpet
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Subwoofer mounting depth: 14 1/2"
  • Subwoofer cutout diameter: 11 1/4"
  • Box volume: 1.85 cubic feet (per chamber)
  • Total box volume: 3.7 cubic feet
  • Dimensions: 16"D x 35"W x 16.25"H
  • Also available in Blue and Black
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Port Specifications:

  • Rectangular Slot Port
  • Number of ports: 2
  • Port volume: 0.18 cubic feet (per port)
  • Total port volume: 0.36 cubic feet
  • Estimated port tuned frequency (fb): 35 Hz
  • Port dimensions: 1.5"Width 12.5"Depth

Specifications & Details

Box/Enclosure specifications
Subwoofer Size
Subwoofer Cutout Shape
Round / Circle
Box Type
Number of Subwoofers
Box Style/Shape
Cutout Diameter or Length
Maximum Speaker Depth
Total Box Volume
3.7 cubic feet
Box Volume (Each Chamber)
1.85 cubic feet
Wood Thickness
Number of Terminals
Terminal Type
Spring posts (banana clip ready)
Box Exterior Color
Box Finish
Tuning Frequency
35 Hz
Port Details
Number of Ports
Tuning Frequency
35 Hz
Port Diameter
Port Length
Warranty and Return Policy
Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


Customer Ratings & Reviews

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Customer Reviews

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nice pre made box.

working well with my 2 older comp vr subs. i have the silver ones with red kicker logo and i was in a sealed box before this, but i like the sound much better in ported with hip hop and basshead music.

By Jodie on November 10, 2013


found this helpful.

built well but, p3 speakers didn't fit in red front.

The box is a nice box fir the price. Disappointed that the rockford p3s I bought didn't fit inside the red decorative front but just used it without it.The speakers sound great in it though anyways.

By Brett on January 29, 2015


found this helpful.

Only 1 downside.

I'm giving this box a 3 star rating solely to fact that the baffle around the box, didnt even allow me enough space to plop my sub down into it. I have 12 inch subs but the baffle doesnt give enough space for my speaker to sit all the way in.

By Andrew on June 4, 2014


found this helpful.

We will see!

I ordered this and had the package less than a week later. I live in Germany so I was impressed! I almost always shop sonic, unless they are backordered :(. The box seems week built and looks nice. My type R bar,y fits. It's a very very snug fit. I guess that's good. The box looks good. I. Powering two typ R 12". Each one has its own alpine mrx m110 :D

By Andrew on March 5, 2015


found this helpful.

Great sound

Very professional look and sound. I'm very pleased with the box

By erikspaz on July 27, 2014


found this helpful.

These will break apart on 600w RMS subs!

Didnt have this box very long, and it started to come apart and rattle on two RE Audio 600w subs. Had to put over 20 additional screws into it to slow it from breaking apart faster. BOTH of the wire terminals melted with 14 ga speaker wire going to them. These are JUNK!

By Anon on November 6, 2013


found this helpful.

Great sub box

I put two alpine subs with alot of power in this box and it handles it very well

By Pops123 on August 17, 2015


found this helpful.

Belva box

I bought this box to put in my 2012 Chevy Suburban LT and I put two NVX VCW122 in it at 1Ohm the box looks and sounds amazing every time I open the back hatch people say how nice it looks I enjoy the double baffle so the subs lay nice and flush. I would recommend this to just about anyone looking for a smaller box with good sound.

By Anonymous on March 31, 2019 Checkmark Icon Verified purchase


found this helpful.


This product is good only problem was the face plate hole are to small an required to be sanded down. Other then that it is a good product.

By Lopez on November 8, 2015


found this helpful.


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