Dual 15 Inch Ported Subwoofer Box Design

$8.88 Regular price $49.99 Sale price

You Save 82% ($41.11)



Blueprints (only) – How to make (NOT the actual box)

A PDF of the blueprint (box design) will be emailed in approximately 30 minutes after you order. If you don’t receive it, please check your spam folder or contact us at hello@ctsounds.com.

Note: All box-designs (blueprints) are non-returnable. There is no refund on box-designs.


CT Sounds represent the Dual 15 Inch CENTER PORTED Subwoofer Box Design (Ideal for our Tropo, Strato, and Meso 15 Inch Subwoofer).

This box is tuned to give you 30.94Hz frequency & the volume is 7.00 cubic feet.
But you can use other subwoofers. 

Check out Meso 15" D1Meso 15" D2

Customer Reviews

Based on 10 reviews
Scott Mowery
Great design

I have bought box build designs off line before and thought if the person selling had been dropped on their head. $5 for quality online blueprint/design. Most ppl charge $80+ for some totally useless designs.
100% real. I've built 2 dual 15" boxes stacked from these. They are the best design/online blueprints yet, can print them out, enlarge. So happy I happened upon ctsounds.com truly amazing quality

Chance Jarrett
CT Sounds has me hooked..

i just wanted a little bass in my daily driver. it started off with 2 10's. then i wanted a little deeper bass and thats when my buddy told me about CT Sounds. I ended up getting the strato 12". Was really pleased with it and then i started wanting to go a little more. ordered the Strato 15" and was amazed. I drive an extended cab truck so now i have no back seat, 2 x Strato 15's, 1 x Strato 12", and the other 2 x 10's that i initially started with and 4 amps.. (one for each size subwoofer and one for the component system) Now i plan on getting one more Strato 15 when i get the extra cash and the matching compontent system once they have it back in stock next year. My truck was not supposed to turn into what it has but i cant say im mad. Lol But i know im never buying a different brand of speaker again. Thanks CT Sounds, and ill always recommend your product!

Brian E Smith Sr
Great plan

Very good design, haven’t built it yet but will be doing so soon.

Steve Williams

Dual 15 Inch Ported Subwoofer Box Design

Charles Lofton
Dual 15 box design

Very pleased with the layout. Tuning close to what I wanted. Makes for 1 slammin 15 box.