Home Speaker Asylum

General speaker questions for audio and home theater.

RE: Diffraction and front baffle and cabinet design

If you look carefully at the linked paper, you'll find that the responses in figure 15,16, and 17 (the rectangular box) have the best response. The sphere with offset tweeter (figure 6) is not a practical design and you didn't specify an offset driver which makes a significant difference as the centered driver on a more practical circular baffle (figure 8) is the worst case (which is what I was referring to).

Additionally, I'm familiar with most of the people you cited above. Most of them are novices who routinely make ridiculous and inaccurate statements online with the exception of Mr. Krutke who is the closest person to being a professional in the industry and has actually designed and had manufactured an excellent mid bass driver. Anyone can work up a passive crossover and give the plans to a cabinet maker as some of the aforementioned "gurus" have done. I've heard their products and they all pale in comparison to those designed by true industry professionals at PSB, Revel, Canton, KEF, NHT, Vienna... etc - in some cases at a fraction of the cost. The more experienced companies routinely produce products with a much better balance of sensitivity, dynamics, spectral accuracy, and imaging coherence. Unfortunately, with modeling programs that generate transfer functions and response estimates based on rough dimensional parameters and raw driver responses - virtually anybody can build a speaker who has access to basic carpentry tools. Buying expensive Accuton or RAAL drivers doesn't make up for the lack of knowledge in acoustics or electrical engineering which is why some of the aforementioned manufacturers do a heck of a lot more for a whole lot less.



Edits: 04/17/12

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