Car Subwoofer Boxes & Enclosures

Frequently Asked Subwoofer Box Questions

Does a subwoofer box make a difference?

Yes, and it is the difference between bass and noise. Without a box, the sound off the back of the cone wraps around and cancels the sound off the front, so you lose most of your low end. The box stops that cancellation and sets how the driver behaves. The same subwoofer in two different enclosures can sound like two different products.

What does a box do for a subwoofer?

The box controls the air behind the cone, which controls the driver. Sealed enclosures use trapped air as a spring for tight, accurate response. Ported enclosures use a tuned vent that reinforces output near the tuning frequency. Box volume also sets how low the sub plays and how well it stays under control at high power.

Which type of subwoofer box is best?

There is no single best type, only the right type for your goal. Sealed is best for sound quality and tight, accurate bass in a smaller box. Ported is best for maximum output and efficiency but needs more space. Vehicle-specific behind-seat boxes are best when you need factory fit without losing cargo room.

Do subs hit harder in a ported box?

Yes. A ported box is more efficient near its tuning frequency, so it plays louder than a sealed box on the same amplifier power, typically by around 3 dB in the tuned range. The tradeoff is a larger enclosure and a steeper rolloff below tuning. Choose ported for output, sealed for accuracy.

Which subwoofer box is best for deep bass?

For the deepest usable output, a ported box tuned low, usually in the low 30 Hz range, moves the most air where you feel it. If you want depth with control rather than maximum volume, a properly sized sealed box rolls off more gradually and often sounds deeper in a vehicle because cabin gain fills in the bottom octave.

What size subwoofer box do I need?

Box volume is set by the specific driver, not the cone size. Two 12 inch subwoofers can call for very different sealed or ported targets depending on their Thiele-Small parameters. Each enclosure we build is cut to its driver's published target. Model it yourself with our Subwoofer Box Calculator Suite, or send us your subwoofer and vehicle and we will match the right box.

What are your enclosures made of?

Every box is cut from Langboard Elite MDF, 48.5 pounds per cubic foot with a 200 psi internal bond, on our ShopSabre CNC routers in Tullahoma, Tennessee. Sealed variants ship with polyfill installed, and each box is prewired with 12 gauge OFC to an ABS and carbon fiber composite terminal cup with stainless hardware.