In Reply to: RE: Diffraction and front baffle and cabinet design posted by villastrangiato on April 16, 2012 at 14:21:15:
Dude, I'm not looking for a fight. And guys like John Kreskovsky, John Krutke, Jeff Bagby, and Dennis Murphy -- all of whom have done design consultation for high-end manufacturers, and have decided to share their knowledge with the DIY community out of love of the hobby -- are hardly "novices."
Please see the linked article, published by Harry F. Olson in the JAES way back in 1950. Graphs 6-17 show the measured effects of diffraction on frequency response, caused by different baffle configurations. The sphere and the rectangle with deeply chamfered edges (he didn't test any roundovers) clearly show the best responses. This is not new information, and I doubt if the laws of physics have changed in the interim.
You can easily model the effects for yourself, with cheap/free software such as The Edge, or Baffle Diffraction Simulator from the FRD consortium, or more advanced professional software like Sound Easy.
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Follow Ups
- Diffraction and front baffle and cabinet design - caspian@peak.org 10:47:05 04/17/12 (16)
- RE: Diffraction and front baffle and cabinet design - villastrangiato 11:59:56 04/17/12 (15)
- Really?!!!!!!!!! - Timbo in Oz 01:03:34 04/18/12 (11)
- RE: Really?!!!!!!!!! - villastrangiato 11:20:36 04/18/12 (3)
- For the record, Villastrangio continues battering his way through the fact - Timbo in Oz 17:35:11 04/18/12 (2)
- RE: For the record, Villastrangio continues battering his way through the fact - jimdgoulding@yahoo.com 22:49:21 04/18/12 (1)
- RE: For the record, Villastrangio continues battering his way through the fact - villastrangiato 04:39:08 04/19/12 (0)
- RE: Really?!!!!!!!!! - villastrangiato 06:30:23 04/18/12 (6)
- RE: Really?!!!!!!!!! - Mushroom Soup 04:33:12 04/20/12 (2)
- It doesn't have to be - badman 13:31:04 04/30/12 (1)
- RE: It doesn't have to be - jimdgoulding@yahoo.com 06:56:21 05/10/12 (0)
- Comprehension poor today? - Timbo in Oz 08:05:17 04/18/12 (2)
- RE: Comprehension poor today? - villastrangiato 08:24:59 04/18/12 (1)
- I did NOT suggest that subs suffer from diffarction effects, I was commenting that it is often stated that - Timbo in Oz 16:05:43 04/18/12 (0)
- RE: Dennis Murphy?? - chocolate_lover9999@yahoo.com 17:01:36 04/17/12 (2)
- RE: Dennis Murphy?? - villastrangiato 18:40:53 04/17/12 (1)
- RE: Dennis Murphy?? - chocolate_lover9999@yahoo.com 09:18:51 04/18/12 (0)