Car Subwoofer Enclosures
Bandpass Subwoofer Box Design: 4th Order vs 6th Order Explained
A bandpass box mounts the driver between two chambers and fires all output through a...
How to Spot a Poorly Built Subwoofer Box: 8 Red Flags
The eight red flags that separate a price-point subwoofer box from a quality one, what...
Polyfill in a Sealed Subwoofer Box: What It Does and How Much
Polyfill makes a sealed box behave like it is 10 to 25% larger. The acoustic...
Subwoofer Cutout vs Bolt Circle: Getting the Mounting Hole Right
A subwoofer's cutout diameter is the hole the cone drops through; the bolt circle is...
How to Seal an MDF Subwoofer Box Against Moisture
MDF swells permanently when wet, and the edges go first. How to seal a subwoofer...
Double-Baffle Subwoofer Boxes: When Your Sub Needs One
A double baffle is the front panel of a subwoofer box built from two bonded...
Shallow-Mount Subwoofer Boxes: When You Need One, and How Ours Are Built
A shallow-mount subwoofer box is a sealed enclosure built thin enough to fit where a...
CNC vs Hand-Cut Subwoofer Box: Why the Cut Decides the Tuning
CNC cutting holds about 0.005 inch tolerance versus roughly 0.020 inch by hand. Why dimensional...
Subwoofer Box Joinery: Dado, V-Groove, and Butt Joints Compared
Dado, V-groove, and butt joints compared for subwoofer boxes: glue surface, shear strength, end-grain weakness,...
The Proline X Enclosure Series, Explained (and How to Pick One)
Our enclosures share the same foundation, 3/4-inch Langboard Elite MDF cut on ShopSabre CNC routers,...
What Is Langboard Elite MDF (and Why We Build Boxes From It)
The three numbers behind Langboard Elite MDF (48.5 lbs/ft3, 200 psi bond, 410,000 psi MOE)...
Subwoofer Port Area Calculator: A Complete Guide to Accurate Tuning
A free, on-page calculator that turns your net box volume and tuning frequency into exact...