Bass Reflex Alignments: Compliance Alteration

After discussing computation of discrete alignments such as B4, BL4, LR4, IB4, and CD4, this new article in the "Computation of Bass Reflex Alignments" article series explores the real-world situation where it becomes impossible to have a system design that exactly matches a certain driver Qt, normally described as an alignment error (or misalignment). The technique presented allows designers to modify tuning towards a desired target response function.

The use of standard filter alignments represents a foundational concept in the loudspeaker industry, with an impact nearly as significant as the invention of the electro-dynamic loudspeaker principle itself. As one of the creators of Speakerbench, a web-based speaker design tool, in collaboration with Jeff Candy, Claus Futtrup is in a unique position to discuss the evolution of enclosure designs based on this electrical filter theory, including the concept of an alignment chart.

Claus Futtrup and Jeff Candy, the two creators of the Speakerbench online tool for assisting in speaker design calculations, continue to introduce more and more tools and features in this web-based application. In order to inspire even more the loudspeaker DIY community, the two authors have created an interesting Speakerbench Youtube channel where we can find new interesting videos discussing the history of speaker design theory and specifically Loudspeaker Bass Reflex Alignments.