Picture 1 of 6
Gallery
Picture 1 of 6
Have one to sell?
Custom Ported Sub Enclosure Box for 1 18" Sundown Audio U Series U-18 Subwoofer
US $334.95
as low as $30.07/mo with
Condition:
New
A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details.
More than 10 available118 sold
- Buy It NowCustom Ported Sub Enclosure Box for 1 18" Sundown Audio U Series U-18 Subwoofer
Oops! Looks like we're having trouble connecting to our server.
Refresh your browser window to try again.
Pickup:
Free local pickup from Nicholasville, Kentucky, United States 40356
Shipping:
US $39.95 FedEx Ground / FedEx Home Delivery®.
Located in: Nicholasville, Kentucky, United States
Delivery:
Estimated between Wed, Sep 10 and Wed, Sep 17 to 94104
Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Payments:
.
As low as $30.07/mo with Klarna.
*No Interest if paid in full in 6 months on $149+. See terms and apply now- for PayPal Credit, opens in a new window or tab
Earn up to 5x points when you use your eBay Mastercard®. Learn moreabout earning points with eBay Mastercard
Shop with confidence
Seller assumes all responsibility for this listing.
eBay item number:323497041497
Item specifics
- Condition
- Country/Region of Manufacture
- United States
- Speaker Size
- 18"
- MPN
- CE516328991
- Brand
- Concept Enclosures, LLC
- UPC
- Does not apply
Item description from the seller
Popular categories from this store
Seller feedback (5,853)
This item (17)
All items (5,853)
- n***n (274)- Feedback left by buyer.Past yearVerified purchaseVery solid enclosure. It’s exactly what I needed for my new sub. Fits I’m my model 3 perfectly, with no modifications. It’s bass overload.
- 0***j (597)- Feedback left by buyer.Past 6 monthsVerified purchaseVery good quality and sounds fantastic!
- l***3 (5)- Feedback left by buyer.Past 6 monthsVerified purchaseGreat quality! Great service.
- e***- (1)- Feedback left by buyer.Past yearVerified purchaseThis is the nicest box I’ve ever ordered! It sounds better and hits the lows! I reached out asking for custom port tuning and cutout diameter and he hooked it up! It arrived quicker than I expected in perfect condition! Packaged up really well so no damage upon arrival. It’s tuned exactly to where we talked about and the cutout diameter is perfect. I’m super happy with my purchase! It looks so nice and for the price you can’t beat it! Wayyy better then pre fab boxes lol Thank you!!Custom Ported Sub Box Enclosure for 1 10" American Bass TNT - 1.5 CU FT - 34 Hz (#264038736228)
- _***e (378)- Feedback left by buyer.Past 6 monthsVerified purchaseWow is all that I can say….. the quality and craftsmanship for the price is unmatched!! I ended up receiving my box 2 weeks earlier than the posting listed. They went above and beyond with packaging to ensure absolutely nothing could go wrong during shipping. I highly recommend anyone in the market for an enclosure to look no further than here!Custom Ported / Vented Sub Box Subwoofer Enclosure for 4 8" DC Audio M3 8" subs (#325340851743)
- t***o (8)- Feedback left by buyer.Past 6 monthsVerified purchaseThis is the nicest box I have owned and I have owned several gately boxes as well as other custom boxes. Tyler did a great job not only taking my special request for a lower tuning for my 12” Sundown Audio Nightshade v6, but recommending an upgrade to birch. The box arrived extremely well packaged with absolutely no damage. You are not going to find a better box at this price point period. Very high quality box ! I will recommend all my friends to use concept enclosures for their box needs.
Product ratings and reviews
Most relevant reviews
- Jun 03, 2024
It arrived earlier than expected, packaged nice and tight to prevent damage. Looks to be good quality, feels sturdy. Haven’t installed the sub yet, so
Verified purchase: YesCondition: NewSold by: conceptenclosures
- Jun 21, 2021
Love it
Verified purchase: YesCondition: NewSold by: conceptenclosures
- Jun 16, 2025
Very good quality and sounds fantastic!...
Verified purchase: YesCondition: NewSold by: conceptenclosures
- Jun 06, 2025
Very well built ...
Verified purchase: YesCondition: NewSold by: conceptenclosures
More to explore :
- Sundown Audio 18 Inch Car Subwoofers,
- Sundown Audio Car Subwoofers,
- 18" Speaker Car Speaker & Subwoofer Enclosures,
- Sundown Audio 12 Inch Car Subwoofers,
- 18" Speaker Car Speaker & Subwoofer Enclosures Single,
- Sundown Audio Car Subwoofers 10in. Speaker,
- Sundown Audio 15 Inch Car Subwoofers,
- 18" Car Subwoofers,
- Sundown Audio 8 Inch Car Subwoofers,
- 6" Single Ports Car Speaker & Subwoofer Enclosures
Popular categories from this store
Seller feedback (5,853)
This item (17)
All items (5,853)
- n***n (274)- Feedback left by buyer.Past yearVerified purchaseVery solid enclosure. It’s exactly what I needed for my new sub. Fits I’m my model 3 perfectly, with no modifications. It’s bass overload.
- 0***j (597)- Feedback left by buyer.Past 6 monthsVerified purchaseVery good quality and sounds fantastic!
- l***3 (5)- Feedback left by buyer.Past 6 monthsVerified purchaseGreat quality! Great service.
- e***- (1)- Feedback left by buyer.Past yearVerified purchaseThis is the nicest box I’ve ever ordered! It sounds better and hits the lows! I reached out asking for custom port tuning and cutout diameter and he hooked it up! It arrived quicker than I expected in perfect condition! Packaged up really well so no damage upon arrival. It’s tuned exactly to where we talked about and the cutout diameter is perfect. I’m super happy with my purchase! It looks so nice and for the price you can’t beat it! Wayyy better then pre fab boxes lol Thank you!!Custom Ported Sub Box Enclosure for 1 10" American Bass TNT - 1.5 CU FT - 34 Hz (#264038736228)
- _***e (378)- Feedback left by buyer.Past 6 monthsVerified purchaseWow is all that I can say….. the quality and craftsmanship for the price is unmatched!! I ended up receiving my box 2 weeks earlier than the posting listed. They went above and beyond with packaging to ensure absolutely nothing could go wrong during shipping. I highly recommend anyone in the market for an enclosure to look no further than here!Custom Ported / Vented Sub Box Subwoofer Enclosure for 4 8" DC Audio M3 8" subs (#325340851743)
- t***o (8)- Feedback left by buyer.Past 6 monthsVerified purchaseThis is the nicest box I have owned and I have owned several gately boxes as well as other custom boxes. Tyler did a great job not only taking my special request for a lower tuning for my 12” Sundown Audio Nightshade v6, but recommending an upgrade to birch. The box arrived extremely well packaged with absolutely no damage. You are not going to find a better box at this price point period. Very high quality box ! I will recommend all my friends to use concept enclosures for their box needs.