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Sound Ordnance Bass Bunker

Sealed single 8" subwoofer enclosure (Model BB8-35S)

Outlet: Open Box

Item #: 777BB835S

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14 Reviews

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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 BB8-35S sealed enclosure holds one 8" subwoofer and offers an internal volume of 0.38 cubic feet. Just add the right sub, 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 one 8" subwoofer
  • 1/2" MDF (medium-density fiberboard) with black carpet covering
  • cutout size: 7-3/16"
  • internal volume: 0.38 cubic feet
  • dimensions: 10-3/4"W x 10-1/16"H x 10-11/16"D1 x 7-1/2"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.

Hands-on research

What's in the box?

  • Single hatchback-style enclosure for 8" subwoofer with spring-post terminals

Product Research


Materials: The Sound Ordnance BB8-35S Bass Bunker is an unloaded, hatchback-style sealed enclosure for a single 8" subwoofer. It is constructed of 1/2" MDF (medium-density fiberboard), covered in black carpet.

Internal Box Volume: The enclosure has 0.38 cubic feet of airspace.

Terminals: The BB8-35S is equipped with a pair of spring-post speaker terminals, 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, the terminals have 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.

Sound Ordnance™ Bass Bunker Reviews

Average Customer Review:

14 reviews
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nice box

Written By Anonymous, Virginia on Wednesday, February 04, 2015

Crutchfield Customer Review (What's this?)

I would have liked thicker material but it does the job.

Pros: Sealed nice.

Cons: Material thickness - this is personal preference.

Constructed Well!

Written By Dee, Florida on Friday, December 19, 2014

Crutchfield Customer Review (What's this?)

Having constructed countless sub enclosures since the early 90's, I am quite impressed by this little one. Many may scoff at it's wall thickness (or lack thereof), however if you know about building boxes then you would know that it doesn't always take 3/4" material to build a sturdy box. The bracing helps a little with the sides & bottom (it isn't attached to the top for some reason), but the actual construction itself with the way the panels are fitted together adds enough sturdy bracing intrinsically. Recessed sides & small panels helps avoid panel flex! This also in turn lessens weight tremendously, and that is compared to another similar size DIY 8" enclosure stored in the closet.

The 16 gauge wiring suits well with subs that will easily fit into the cabinet so I there's really no need to change it. For those who are worried about it, there is only around a 1.2 watt/.09 DB loss of power over 1.5ft of 16 gauge wire. That's 198.81 watts out of 200 still passing through. Clearly inaudible & insignificant!

Carpet looks great & the binding post terminal gives a professional build look & quality to it! Only con that I can see to this box is perhaps the sub could have been placed on the slanted side to aid in stability from tip overs for wild drivers, but that's what securing to the floor is for. I would definitely buy this again!

Pros: Great build quality! Sturdy & lightweight. Enough wire length to attach the sub out of the box. Quality terminal & carpet... price is spot on!

Cons: Would have like to see the bracing stretch up to the top, but really isn't necessary. Enclosure might be more stable if sub was placed on the slanted side... still no big deal for normal driving.


Written By rob, rich in on Monday, October 06, 2014

Crutchfield Customer Review (What's this?)

it works well

Sound Ordnance Bass Bunker 8"

Written By MikefromMass, MA on Tuesday, September 02, 2014

Crutchfield Customer Review (What's this?)

Nothing fancy but one look says quality. Unless you already have all the tools to make a box of your own, you'll never be able to buy all the supplies you'll need to build a box like this for the money. Custom builds are fun but sometimes it's just not worth it as is the case here for me. Running a JL8w3v3-4 off a 200w MTX amp with very good results. Box solid as a rock. Bracing is strong, seams are clean, carpet is perfect, hardware is quality. Pre-soldered wiring is a bit lame but I planned to solder on my own Monster Cable anyway (pre-installed came right off with soldering gun). I'm fussy and was still more than satisfied.

Pros: Fit and finish, price, time saved not building my own enclosure!

Cons: Pre-soldered wire is pretty wimpy


Written By Rodney, Columbus, Ohio on Wednesday, August 27, 2014

Crutchfield Customer Review (What's this?)

Perfect size for my sub and the trunk of my car.

Pros: Perfect fit, great sound

Cons: None!

Great for the price

Written By Slink, Murrysville, PA on Thursday, October 31, 2013

Crutchfield Customer Review (What's this?)

Sounds great with a rockford fosgate 8". Actually suprised me for the price

Pros: Cheap, great quality

Cons: -

Excellent with only one issue

Written By dearmosd, Liberty Twp, Ohio on Saturday, September 28, 2013

Crutchfield Customer Review (What's this?)

EXCELLENT PRODUCT only one issue i didnt like was the bracing inside the box blocked some thicker magnet speakers or magnets that were wide. The brace prvented the speaker from fulling sitting, easy correction i just removed the bracing but other than that this is a great box. I plan on ordering another for my 10" sub

Pros: excellent construction and material

Cons: inside bracing decreased inside size were the thicker speaker magnet was hitting the bracing

Lil Bass Bunker is correct

Written By Devin D, Chicago, IL on Tuesday, September 10, 2013

Crutchfield Customer Review (What's this?)

Nice compact size w/ a solid construction my only complaint if you want to even call it that is that the box tips over easy so it needs to be secured some way. I paired it w/ a JBL GTO804 & Alpine MRP-M500 & the trio works really well together in the small trunk of my 2011 Camaro.

Pros: Compact Size, solid construction

Cons: Tips over easy needs to be secured

8" sealed bass bunker

Written By greg, cass city mi on Wednesday, July 17, 2013

Crutchfield Customer Review (What's this?)

small&convenient used with infinity 860w it has amazingly punchy clean response with good output powered by 265watts rms...awesome sound quality&saves space,used it as a midbass driver in front of console between front seats with a single 12" in rear of minivan....incredible!

Pros: small enough to fit almost any vehicle

Cons: none

Solid Enclosure!

Written By azhtfreak, McMurdo Bay, Antarctica on Friday, June 15, 2012

Crutchfield Customer Review (What's this?)

Solid construct - 5/8" MDF and good binders - why I bought it... Dropped a Kicker 10CVR82 8" 2x2ohm DVC in.

Pros: Kicker 10CVR82 hits hard in this sealed enclosure - after mods (see below). FREE S/H!!!

Cons: This IS a premium price for a small 8" enclosure. MODS: (1) Replaced the supplied 16GA internal wires with 12GA, (2) RTV (caulk) the binder cup to actually SEAL the enclosure, (3) added poly fill. For a $40 8" SUBWOOFER enclosure, move to the 12GA and the poly fill, it's what, a +$0.05 increase per piece???.

S/O Bass Bunker 8 inch

Written By Chuck W., Madison, Wi. on Thursday, June 07, 2012

Crutchfield Customer Review (What's this?)

I have not yet heard how this product will make my 8 inch JBL Sub sound. My stereo build is just waiting for some rca/speaker adaptor cables to be complete. The quality of the Sound Ordinance Bass Bunker in 8 inch is very good. The construction is flawless and a good marine grade carpet is used to finish it. I did remove the smaller gauge wire that came with it and replaced with 12 gauge cable before mounting the Sub. It is a great product to be sure...

Pros: Great Quality

Cons: None

Sound Ordinance

Written By Vernon D, San Leandro on Wednesday, April 18, 2012

Crutchfield Customer Review (What's this?)

Great buy, name speaks its performance

Sound Ordnance™ Bass Bunker

Written By BenO, Tyler TX on Tuesday, August 02, 2011

Crutchfield Customer Review (What's this?)

I was pleasantly surprised to get a box of this quality for this price. Works perfectly with my 8 inch infinity speaker, however I did have to slightly enlarge the speaker hole for my speaker to fit. Sounds and looks GREAT!

Exactly what I needed

Written By Patrick, Nashville, Tennessee on Tuesday, May 24, 2011

Crutchfield Customer Review (What's this?)

I got this box to hold a JL 8w1v2-4 subwoofer. The box is .38 cuft and the sub called for .375 so it was a perfect match. The box was a whole lot smaller than I expected, and will take very little space up. It is VERY solid. You would have to take a large hammer to it to break it, and that would be after many many hits. The inside wire are thick (at least 18 gauge, looked to be 16 gauge) comign off the input terminals which are high quality. The opening was the perfect size, I pre-drilled the holes to mount the sub and used deck screws to hold it in place. It was extremely solid and very air tight. High quality product and would definitely recommend. Plus it looks good compared to other "flashy" sub boxes out there.

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?

Get everything you’ll need to enjoy your new Sound Ordnance™ Bass Bunker

You'll want a sub that is a match for this enclosure.
It's critical to have good wire, and none is included with the sub.
Add a grille and keep your sub safe.
Keep your sub from rolling around in your trunk by using mounting hardware.
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After $20.00 Sale Add to Cart
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1


T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1


Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B


Speaker Grilles

Speaker Grilles

(8" waffle style)

Item #: 125G08


Polyester Fiber Stuffing

Polyester Fiber Stuffing

Make your subwoofer think it's in a bigger box (1-pound pack)

Item #: 027808


Add to Cart
Corner Protectors

Corner Protectors

Item #: 1251536


Box Brackets

Box Brackets

Item #: 125B702KIT


Rubber Feet

Rubber Feet

Item #: 125F1692


Grille Clamps

Grille Clamps

(Front/top mount clamps)

Item #: 125G727KIT