18" Subwoofer Box Plans Pack!
Get all the 18" Subwoofer Box Plans available on the website plus some unreleased plans! 
If you can measure and make basic cuts, you can build on of our boxes! 
CustomLowZ makes it easy for anyone to build a great‑sounding subwoofer box—no experience required. Every plan is designed to be simple to follow, and tuned for real performance, so you can build a box that hits hard and sounds clean without guessing or stressing.
 
 
There are 22 Individual 18" Subwoofer Box Plans Located in This Instant Download File! 
DIY Subwoofer Box Plans Include
-Multiple 3-d Rendering Images
-Optimized Cut Sheet
-Specifications Sheet
At an average Value of $13 per plan, This is a $286 Value!
Plans come in a Zipped folder. Sent Automatically in an instant download link
This Folder contains the 18" Subwoofer Box Plans below.
UNIVERSAL 18" ENCLOSURES
2 Concrete Audio C5 18s
2 Crossfire Audio XT3 18s Aero
2 Crossfire Audio XT3 18s
2 Dayton Audio Ultimax UM18‑22 18s
2 DD Audio 800 Series 18s 4th Order
2 Resilient Sounds Platinum 18s 4th Order Blow‑Thru
2 Resilient Sounds Team 18s 6th Order
2 Skar Audio SDR 18s
2 Skar Audio ZVX 18s 4th Order Blow‑Thru
2 Skar Audio ZVX 18s SPF
2 Soundqubed HDX4 18s 4th Order
2 Stereo Integrity HST‑MK3 18s
4‑SUB BUILDS
4 Skar Audio EVL 18s 4th Order Blow‑Thru
4 Sundown Audio Xv3 18s 4th Order Blow‑Thru
4 Wolfram Audio 18s 4th Order
6‑SUB BUILDS
6 Resilient Sounds Platinum 18s 6th Order
6 Sundown Audio Xv3 18s 4th Order
ADDITIONAL SINGLE BUILDS
Avatar SVL‑18 18 AeroPor
Fi Audio BTL‑3 Ferrite 18
JL Audio 18W3 18
Resilient Sounds Team 18
Stereo Integrity HT 18 Home Theatre