Enclosure Design

  • Bandpass Enclosure Characteristics

    These enclosures have, at times, been popular in the car audio world. It would probably surprise many people to know that this is a very old design. The first patent for a bandpass enclosure was filed in 1934 by Andre d’Alton. Many home sub/satellite speaker systems currently use bandpass designs...

  • Calculating Enclosure Volume

    Accurate enclosure volume calculations are essential for proper subwoofer system design. This tutorial will explain the steps used to calculate the internal volume of a speaker enclosure. Methods of determining an existing enclosure’s volume will be discussed as well as methods used to design a b...

  • Enclosure Bracing

    Tips and tricks regarding enclosure bracing. This is what a properly braced ported enclosure for a single driver would look like. Note the liberal use of wood in the construction of the baffle itself (where the subwoofer actually mounts–here on the right side of the box just below the slot-port...

  • Enclosure Ports

    Port Basics When tuning a ported enclosure, there are two widely used methods implemented. These two methods involve the use of a port, generally made from a simple piece of PVC pipe, or a duct (sometimes called a slot port), which is normally constructed out of the same material the box is made ...

  • Enclosure-Type Performance Comparison

    Sub–30 Hertz Behavior Sealed box designs and single-reflex bandpasses are much better at controlling excursion at extremely low-frequencies (below 30 Hertz). For this reason, they can usually handle more power in these frequency ranges than ported designs and dual-reflex bandpass designs, which ...

  • Ported Enclosure Characteristics

    Ported Enclosure Characteristics Ported EnclosurePorted Enclosure Ported enclosures (aka: Bass-Reflex, Vented) have actually been around longer than sealed designs. The ported enclosure was patented in 1932 by A.C. Thuras. Further development since then has defined the behavior of ported system...

  • Sealed Enclosure Characteristics

    Sealed Enclosure Characteristics Sealed EnclosureSealed Enclosure The sealed (aka: air-suspension, acoustic-suspension) enclosure is a classic box design. Patented in 1949 by Harry Olson and popularized in the 1950’s by Acoustic Research, this design has stood the test of time and has been adop...

  • Securing Your Subwoofer Enclosure

    Tech Tip – Securing Your Subwoofer Enclosure We often get asked for tricks on how to improve bass in a vehicle. One of the most overlooked aspects when installing a subwoofer enclosure into a vehicle is making sure it is fastened down tight. A subwoofer can release a tremendous amount of energy ...