Dual 18 Inch PORTED Subwoofer Box Design - CT SOUNDS

Dual 18 Inch Ported Subwoofer Box Design

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

The dual 18-inch ported subwoofer box design provides you with the blueprints to build your own vented subwoofer box. This dual 18-in sub-box design has a volume of 10.40 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 hello@ctsounds.com.

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

Customer Reviews

Based on 17 reviews
Neftali L. (Ocala, FL)
Dual 18 inch Subwoofer box

Easy to read blueprints. Perfect design, exactly what I was looking for.

T.R. (Macon, GA)
Absolutely love it.

Let me start off by saying what a great design!!! The bass (hertz) when it hits. I used two sheets of red oak, and added an extra baffle, these x18s from sundown are heavy. I'm currently under powered, but as it is now it still hits hard a low. (Pic was taken before I finished it up.)

Martin C. (Chino, CA)
18 inch meso

This box port and the subs playing at 32 hz with my 4000 watt Rms mono block amp two 300 amp Alternators for odyssey 1500 coupe batteries total zero gauge wiring there is no comparison

simon r. (Visalia, CA)
Subwoofer box design

The plans were well done and the box sounds great

Bryan T. (Minneapolis, MN)

Dual 18 Inch PORTED Subwoofer Box Design