How many subwoofers are enough welti

Todd Welti did a lot of experimentation with subwoofer placement, numbers, and bass sound quality. This breakthrough work on bass reproduction is a true revelation that has allowed us as home theater designers to create a room where we can significantly minimize bass response problems. The resulting whitepaper on the topic was a culmination of countless tests and acoustical models of playing with multiple subwoofers in different locations in a room to improve bass response over a much wider listening area.

In the end, Dr. Toole and Todd Welti concluded that the most ideal scenario for bass reproduction is to have one subwoofer located at the midpoint of all four walls. This configuration displayed the least amount of variation in bass response from seat to seat. Alternately, four subwoofers can be used in each corner. Now imagine how best to hold the blanket so you have the maximum amount of control over the surface area. Would holding just a single corner of the blanket work?

It certainly would, but wouldn't you have much more control over the blanket if you got some help and had all four sides of the blanket held firmly in place? Of course! Now just imagine sound waves traveling through your room like a blanket and the subwoofers in the midpoint of all four sides working to provide the most even coverage.

Now I realize four subwoofers may not be logistically or even practically feasible in many home theaters. Fortunately two subwoofers opposing each other at the mid-point of the wall also works well. Either scenario will provide you with a far more even response from seat to seat than the traditional single subwoofer approach would. This is just the most cursory of overviews to shed some light on this topic. If you would like to learn more about the work that went into this I strongly encourage you to read a whitepaper by Research Acoustician Todd Welti instigated by Dr.

Todd is still continuing his research and will publish new findings this Fall. Stay tuned…. Analysis, modeling and wide-area spatiotemporal control of low-frequency sound reproduction. Highly Influenced. View 10 excerpts, cites methods and background.

Low frequency sound field enhancement system for rectangular rooms, using multiple loudspeakers. View 5 excerpts, cites methods and background. Although only a single subwoofer is typically used in two-channel and multichannel stereophonic sound reproduction, the use of two subwoofers enables manipulation of low-frequency interaural … Expand.

View 5 excerpts, cites background and methods. Localisation of Subwoofers in Concert Hall Environment. View 3 excerpts, cites background. At low frequencies the listening environment has a significant impact on the sound quality of an audio system. Standing waves within the room cause large frequency-response variations at the … Expand.

View 7 excerpts, cites background and methods. Rooms for sound reproduction. Practical applications of chameleon subwoofer arrays. View 2 excerpts, cites methods and background. View 1 excerpt, cites background.