Woofer Analyzer
The Woofer Analyzer checks the “personality” of your woofer — sensitivity, resonance, and Qts (all of which are available with your woofers data sheet). — to determine whether it belongs in a sealed or vented box. This ensures proper alignment between driver and enclosure.
Formula: Qts = (Qes × Qms) / (Qes + Qms)
Standard in professional audio design
Understanding Cabinet Choices
The choice of cabinet is always a balance between size and bass depth. All woofers need a box to live in, because they’re designed to work in one. A properly designed cabinet enhances a woofer’s performance.
The cabinet’s job is to capture the woofer’s back wave and use it for control or reinforcement. It can either provide damping — acting like a shock absorber — or employ the back wave to add extra bass via a port. A woofer has a suspension like a car: it guides the cone and keeps it stable. The box adds stiffness and defines how that motion is controlled.
In a sealed box, the air inside acts like a spring. As the woofer moves inward, the trapped air compresses and pushes it back out. This is often called an “acoustic suspension” enclosure.
In a ported box, the rear wave is tuned to make the bass deeper and stronger.
What the Port Does
A port is a simple helper tube — a calculated diameter and length that enhances bass depth and volume. Think of it like a pipe organ tube or blowing across a bottle to make a note. The larger the pipe or bottle, the deeper the note.
Because the port uses the back wave, a ported box must be larger than a sealed box.
👉 Our calculator will help you determine the proper box size — sealed or ported — and guide you to the right choice.
