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Tru Spec S15SUPB

Empty Single 15" Vented Prefabricated Enclosure

Tru Spec
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• 15" Single Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Computer-designed CNC cut
• Total box volume: 3.50 cubic feet

Learn more about the s15supb
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List price $399.99
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-25%

$299.99

 with warranty
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Get the most out of your Loaded Enclosure with the NVX SDTK20. Eliminates road noise, quiet vibrations, and increase the sound quality and output of audio system, 50%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

Tru Spec S15SUPB

40% off


Priced separately $349 98

Promo Savings of $20 00

Total price:

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Description


Tru Spec brand icon

Authorized dealer


Tru Spec S15SUPB

Every Tru Spec enclosure is computer designed, CNC cut, and assembled inhouse at GP Car Audio. Tru Spec Prefabricated enclosures are simple, straight to the point, true to spec sub enclosures with proper airspace and non-restrictive port area that allows you to have custom box performance at a reasonable price.


Product Details:

  • 15" Single Ported Subwoofer Enclosure
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Computer-designed CNC cut
  • Built with proper airspace and non-restrictive port
  • Subwoofer cutout diameter: 14.2"
  • Total box volume: 3.50 cubic feet
  • Dimensions: 34" L x 14" H x 22" W
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Port Specifications:

  • Rectangular port
  • Number of ports: 1
  • Port diameter: 52"
  • Estimated port tuned frequency (fb): 35 Hz

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Specifications & Details


Box/Enclosure specifications
Subwoofer Size
15"
Subwoofer Cutout Shape
Round / Circle
Box Type
Ported
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Cutout Diameter or Length
14.2"
Total Box Volume
3.50 cubic feet
Box Volume (Each Chamber)
3.50 cubic feet
Wood Thickness
3/4"
Number of Terminals
1
Box Exterior Color
Sand Beige
Box Finish
Unfinished
Tuning Frequency
35 Hz
Port Details
Number of Ports
1
Tuning Frequency
35 Hz
Port Length
52"
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

S15supb

Weight:

65.00lbs

Internal SKU:

s15supb

Internal Product ID:

198870

Customer Ratings & Reviews


Tru Spec S15SUPB thumbnail image

5 star
60%
4 star
40%
3 star
0%
2 star
0%
1 star
0%



Durability
4.4
Value
4.7
Features
4.4
Design
4.7
Usability
4.7

Customer Photos & Videos


Customer Reviews

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Tru spec 15 inch subwoofer box

It seems like a Quailty box so far. I just got it installed earlier today. I have a skar vxf 15. It slams in this box so far. Have it on a 1/3 of power to get it broke in. Very pleased so far! Will update if box blows apart lol

By Bryce on July 29, 2023 Checkmark Icon Verified purchase

49 found this helpful


Decent box

Not a bad box for a quick build, but I was suggest building a similar box out of Birchwood for better resonance

By Robert on February 26, 2024 Checkmark Icon Verified purchase

27 found this helpful


By Alex on April 29, 2024 Checkmark Icon Verified purchase

8 found this helpful


Good box for the money

Not like other cheap prefabs. Solid build and good output

By dusty on March 19, 2026 Checkmark Icon Verified purchase

1 found this helpful


Amazing box for evl 15

Loved adding my own stainless studs to the box. Still waiting on my fabric to come in so I can wrap it but this box is amazing with my evl 15 in it. Beating the absolute crap out of my 2014 escalade and easy to stand up for when hauling luggage. Definitely recommend this box. Closest to custom you will ever get in a prefab box and they hit hard

By Andrew on April 10, 2026 Checkmark Icon Verified purchase




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