Single 15 Inch PORTED Subwoofer Box Design - CT SOUNDS

Single 15 Inch Ported Subwoofer Box Design

Regular price 91% OFF Before: $49.99 Sale pricePrice: $4.44

The single 15-inch ported subwoofer box design provides you with the blueprints to build your own vented subwoofer box. This single 15-in sub-box design has a volume of 3.25 ftand a tuning frequency of 32 Hz. 

A PDF of the blueprint (box design) will be emailed in less than 30 minutes after you order. If you don't receive it, please check your spam folder or contact us at

*Note: All box designs are non-returnable. There is no refund on box designs. 


Dimension: (34 x 20.25 x 13.5) Inches

Customer Reviews

Based on 25 reviews

Excited to start making


Easy to follow plan, ran the measurements in a cut sheet optimizer adding a second baffle, and got all the cuts from one 4x8 sheet 3/4 mdf.

Solid design, works well with the sundown u15 I built it for, digs deep.

If your handy with a saw, research blade kerf and take your time, it's a simple enough project.

Tight squeeze in my 91 Passat, but left enough room on one side for my battery and amps.

Nina H. (Kansas City, MO)

Absolutely slams

E.E. (Chicago, IL)
Nice box👍

Nice box design

J.P. (Bellingham, WA)
The beast

Build this box for skar svr-15 d2 I used 3/4 MDF wood glued all seems before braid nailing it together then drilled and countersunk about 300 premium grade 1-3/4 wood screws they are similar to decking screw they just hold tighter than I silicones all the inside seeams put so good quality black paint inside just to seal the mdf and finally I filled the screw wholes sanded her smooth then hurculined the entire outside if the box with 3 coats all together best durable box for the Pacific Northwest I've ever made. Thank xt sounds