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Sound Ordnance Bass Bunker

Sealed dual 10" subwoofer enclosure (Model BB102-75S)

Item #: 777BB1027S

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20 Reviews | 1 question - 3 answers

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Sound Ordnance's rugged Bass Bunker enclosures come built to last and ready to help your sub deliver real low-frequency firepower. These unloaded boxes feature high-grade, medium-density fiberboard construction, with sealed inner braces that help combat resonance by reducing vibrations. Rounded outside corners and recessed panels allow them to fit into more vehicles, while tough black carpeting defends against incoming nicks and scratches. Bass Bunkers make a great solution when building your own box is not an option.

The BB102-75S sealed enclosure holds two 10" subwoofers and offers an internal volume of 0.76 cubic feet per chamber. Just add the right subs, amp, and wiring, then mount the enclosure securely, and you're ready to hit the road with some real bass artillery in your arsenal.

Warning: This enclosure does not include mounting hardware. If you're buying a sub from us, please check "What's in the Box?" to see if screws are included. If not, you should have an assortment of heavy-duty wood screws on hand for the installation.

Product Highlights:

  • sealed hatchback style enclosure for two 10" subwoofers
  • 5/8" MDF (medium-density fiberboard) with black carpet covering
  • cutout size: 9-1/4"
  • internal volume: 0.76 cubic feet per chamber
  • dimensions: 26-3/4"W x 13-7/16"H x 11-5/8"D1 x 8-1/2"D2
  • warranty: 1 year
  • Our 60-day money-back guarantee

Why do I need an enclosure?

An enclosure is simply the box that houses your sub; sealed and ported enclosures are the most popular types. A sealed enclosure is usually smaller in size, sacrificing a little volume level to deliver more accurate bass. The ported enclosure features a vent which allows bass waves to escape from behind the mounted sub, augmenting the bass coming off the front of the sub. Ported boxes are louder, bigger, and a little less accurate. Every sub works best in the size and type of enclosure that's recommended by the manufacturer, so make sure you match your sub with the right box.

Sound Ordnance™ Bass Bunker Reviews

Average Customer Review:

20 Reviews

Great Box

Written by: Anonymous from Georgia on December 21, 2015

Crutchfield Customer Review (What's this?)

This is a great box. Fits great in my 1999 Honda Civic. Very solidly made.

Pros: Great Construction, Great Size, and Great Sound

Cons: None

Good box

Written by: R. L. Sr. from Courtland, VA on February 16, 2015

This is a great box! It fits well in the trunk of my old 1997 Lumina! It left ample space for other things and it helps produce Great sound! It was a good price as well.

Pros: Excellent sound, good fit, and good price!

Cons: None, so far.

Sound Ordnance™ Bass Bunker

Written by: Anonymous from Belleville, Ks. on March 20, 2014

Crutchfield Customer Review (What's this?)

Good quality box. Solid construction and a clean look.



Nice box

Written by: Lenqt1 from Kansas City, MO on February 1, 2014

Crutchfield Customer Review (What's this?)

Great quality.

Pros: Solid construction.


Head Turner!!!!!!!!

Written by: Jay from Valley, AL. on January 29, 2014

Crutchfield Customer Review (What's this?)

Had a hard decision between sealed and ported with all the opinions out there. Crutchfield advisor said sealed was the way to go on the two Polk Audio DXI 104 Subs I purchased and I think he made a great suggestion! These thinks rock my 05 4runner!!!!!!!

Pros: Tight hard hitting Bass! Small Compact Box!!!!

Cons: None!!!!

Good Enclosure

Written by: Eric B from Arlington Heights, IL on October 18, 2013

Crutchfield Customer Review (What's this?)

Using with Polk Dxi104 subs. Box is constructed very well. Bass is tight and crisp. I drilled a hole between the chambers to allow wiring the subs in parallel inside the enclosure and sealed the hole with cauk.

Pros: Good Construction

Cons: none

nice box for the most par

Written by: locuno1 from grand rapids mi on August 15, 2013

Crutchfield Customer Review (What's this?)

well the box is nice but i have one problem with it, within the first few weeks of owning it the speaker wire terminal spring and cap popped off which is really disappointing if you ask me.

Pros: sealed, small, nice looking.

Cons: faulty terminal possibly on the outside

Sub Box

Written by: EJ from SLO on June 7, 2013

Crutchfield Customer Review (What's this?)

Box is made well and sounds great. Love the sloped back so it sits more flush to the seat.

Pros: Well built, looks great. Great price.

Cons: None yet.

Sound Ordnance™ Bass Bunker

Written by: Jeff from Greenland, NH on May 8, 2013

Crutchfield Customer Review (What's this?)

Seems nice pretty solid however doesn't exactly fit behind the back seat of a mega cab without removing stuff so prob won't end up using it.

Pros: It holds subwoofers

Cons: Doesn't correctly fit my attempted application

Sub Box with the Polk DXi 104

Written by: WallaceW from Salina, KS on April 3, 2013

Crutchfield Customer Review (What's this?)

Works just like a box should work. Sale price made it a easy choice over building my own. Worked well with the Polk DXi subs.

Pros: Good box for the money,

Cons: nothing to complain about

Great Box for DXi104

Written by: Keith from Citrus Heights, CA on April 1, 2013

Crutchfield Customer Review (What's this?)

This box is inexpensive, especially with the package deal with the (2) Polk DXi104, but the build quality is great. It is hard to tell from the picture, but the slanted side of the box is the back which allows it to fit closer to the back seat and take up less room and makes the speakers vertical which I think looks nicer than having them sloped. The "nearly" black carpet is a nice color compared to other's that are more gray in color. The posts are great quality. I really like that the dimensions give it a small footprint for the volume.

My only gripe is that the information didn't say that the wiring inside the box is bare so if your subs don't have spring terminals, you will need female blade connectors. CF should include them. Also, since this box is MDF, pre-drilling should be done so that the holes do not chip out. I would buy again even if this wasn't part of a package.



Great box!

Written by: Anonymous from Arizona on March 28, 2013

Crutchfield Customer Review (What's this?)

Great box! Small and good construction. Could NOT have asked for more for what I was looking for! Fits in the truck with space to spare!

Pros: great box construction, pre wired

Cons: none

perfect box

Written by: jay from sc nm on March 26, 2013

Crutchfield Customer Review (What's this?)

this box was an extremely good deal. i was looking for a box that would fit in my 86 regal (G-BODY) and this fits perfectly inbetween the back dash and upper part of the trunk bed i didnt think i was gunna beable to put 2 subs in my trunk without takeing up all my space but thanks to Crutchfield they made it happen with not only a good deal but very well built box has solid wood, internal supports, easy to use push terminals and its already wired with decently thick wire just poped the subs in and sounded great without any break in time great products have had em about a month with full break in time and subs are a louder and cleaner now would definetly recommend this box if it fits your sub specs. it might b a ordinary box 2 some people but for the quality of the build and the effort they put to use internal supports, push terminals, seal it well, already wired for subs and use (MDF) wood and even package the box with corner coushions for shipping. its alot moore than ordinary to me

Pros: solid build and auwsome features.

Cons: none

Decent Box

Written by: rc3iii from Asheville, NC on March 21, 2013

Crutchfield Customer Review (What's this?)

Decent box. Not crazy about the logo on the top right. Nice terminals on the back but they should be spaced further apart to allow easier amp mounting to back of box.

Pros: MDF not particle board. Internal bracing.

Cons: Ugly logo on front.

Sound Ordnance™ Bass Bunker

Written by: Anonymous from jacksonville, fl on March 19, 2013

Crutchfield Customer Review (What's this?)

Box looks great. Needs a better seal job so expect to have to reseal on arrival. other than that A++++


Cons: Seals lacking

SO Sealed Bass Bunker

Written by: Parabolous from ABQ, NM on February 15, 2013

Crutchfield Customer Review (What's this?)

Great product! The install was self-explanatory, depending on your woofer and amp set up. Like it says on the product description it does not come with hardware so make sure to get have some handy.

The box itself is built well, the carpet is perfect, and with the extra beam supports it is very sturdy. However, the sealant used in the box was lacking slightly and I found a couple spots that were missed.

I paired this box with two RF R1 10" woofers and a RF Punch 300w amp. It sounds great and the bass is tight and accurate.

Pros: Very sturdy, built well, carpet is perfect.

Cons: Sealant used in the box is lacking and very slight in some areas.

great product

Written by: Toxicx15 from United States on July 1, 2012

Crutchfield Customer Review (What's this?)

Worked great with the JLs I put in, fit very snug and is small enough for the smallest part of my 01 Cavaliers trunk. Looks great and came with good wires inside and I like the outside connections.



Good sounding box

Written by: Spork from Kansas on January 29, 2012

Crutchfield Customer Review (What's this?)

I got this box with a pair of alpine SWE-1043's and it was a good match. Box is well built and looks like it should last.



Sound Ordnance™ Bass Bunker

Written by: Amy from Springfield, MO on April 20, 2011

Crutchfield Customer Review (What's this?)

I just want to say that I always thought that Crutchfield was very expensive and really never thought about ordering anything from there. However, in the past year, I have purchased several items from you and have realized that, not only, do you have quality equipment, it is very comparable in price to other stores. Especially with the free shipping on many items. Thanks for making our new car a sweet ride with our new head unit, subwoofers, box and amp!




Written by: punitallstar3 from Long Island, NY on June 1, 2010

Crutchfield Customer Review (What's this?)

it's nothin out of the ordinary, but looks well constructed and holds tight base for my 10" subs. looks very nice on the outside too



Hands-on research

What's in the box?

  • Dual hatchback-style enclosure for 10" subwoofers with spring-post terminals

Product Research


Materials: The Sound Ordnance BB102-75S Bass Bunker is an unloaded, hatchback-style sealed enclosure for dual 10" subwoofers. It is constructed of 5/8" MDF (medium-density fiberboard), covered in black carpet.

Internal Box Volume: The enclosure has two separate chambers, each with 0.75 cubic feet of airspace.

Terminals: The BB102-75S is equipped with two pairs of spring-post speaker terminals, one for each chamber, mounted in the rear panel. The spring terminals will accept bare wire, pin connectors, and single banana plugs, but are spaced too far apart for dual banana plugs. Inside the enclosure, each set of terminals has an attached 18" length of speaker wire for connecting the subwoofer.

Brackets: Brackets for securing the enclosure to your vehicle are recommended.

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.

Product reviews from the Crutchfield Labs

Video: Sound Ordnance Bass Bunkers
by Zak Billmeier, Jo Greene

Sound Ordnance subwoofer enclosures, called Bass Bunkers, are available to house most standard-sized woofers. This Crutchfield video gives you an up-close look at these high-quality sub boxes.

What are the Labs?

Customer Q&A

Crutchfield asked  
Why did you buy this?

son requested this as a Christmas gift. [ Kelly  Dec 04, 2015 ]
i trust crutchfield experience in audio equipment. [ M  Dec 03, 2015 ]

1 question already asked

I would say like 40hz [ JEROMY A  Aug 05, 2014 ]
No complaints. I love this box. It's a cherokee and sounds great. [ DERREK  Aug 05, 2014 ]
Sorry I don't know [ DERREK  Aug 05, 2014 ]