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Category Archives: Acoustics

Devialet Subwoofer Crossover

At Acoustic Frontiers we recommend that a two channel system always include subwoofers. Not only can you solve many room mode related acoustic challenges using subwoofers, but just handing off the bass from your main speakers to subs has other sonic benefits such as reducing distortion and increasing low frequency extension. The challenge then becomes HOW to [...]

Dolby Atmos: Dispersion Requirements for Ceiling Speakers

In this blog article we look at the dispersion requirements for ceiling speakers in a Dolby Atmos system. We consider the example of a system with 4 ceiling speakers and two seating rows and show how dispersion requirements change for: Speakers firing straight down vs. angled at the listening area. Different ceiling heights (9’6″, 8’6″ and 7’6″). [...]

Early Reflections 101

One of the most common “generic” acoustic treatment recommendations is to treat the reflection points. Unfortunately properly managing early reflected sounds is actually very complex psychoacoustically. Blindly treating reflection points with the wrong kind of products can make your sound worse. For a high performance high-end audio listening room, home recording studio or home theater [...]

Ten articles on subwoofers you probably haven’t read

Here are ten great articles on subwoofers that you may not have read. These articles cover a whole range of subjects, from the acoustic benefits of multiple subs to the use of equalization to improve your bass. Enjoy!   From Acoustic Frontiers: Subwoofer Setup 101: Subwoofer Crossover Frequency, Slope and Phase for Two Channel Systems [...]

Understanding small room reverberation time measurements

This article explains how to interpret T60 and other variants of mid and high frequency decay / reverberation time measurements in the context of small rooms like home theaters, listening rooms and recording studios. Note that a lot of things written about T60, both online and in text books, are written in respect to acoustically [...]

Room Acoustic Measurements 101

This article is intended to provide an overview of room acoustic measurements and how they are used to evaluate the extent to which your room is causing acoustic distortions that are degrading your sound quality. The key questions answered are: What are the key room acoustic measurements? What different room acoustic measurement tools are there? [...]