In Reply to: interesting DIY Nautilus clone project posted by troporobo on November 9, 2010 at 17:58:18:
The tweeter pod really is pretty bad but the midrange enclosure is worse.
Both pods only engage with B&W's findings on back wave damping.
They should resemble half spheres at the front.
For anyone here who wants to natter on about diffraction not being a big issue, please read Keith Howard's recent article/s at Stereophile?
Then rediscover Olson's (?spelling?) work at RCA.
And then listen to a pair of spheres in the near field.
If you've never heard a smooth-diffraction speaker, you just can't know how much it really does matter. (When it is also a dead / silent enclosure!?!? :-)!!!!) Hearing the effect of the felt pad idea around a tweeter/mid on your rectangular speakers gives only a hint of what good diffraction behaviour can do.
Real stereo recordings show it up _really_ well.
IMO most of us are USED to rough-diffraction designs. Some of you seem to LIKE them, ;-)!
This effort? And I do respect the effort! ..... Missed the integration that B&W achieved on most of what matters with enclosures.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- they forgot about diffraction behaviour in a BIG way - Timbo in Oz 13:27:04 11/11/10 (6)
- Diffraction behaviour?? ... - andyr 01:14:37 11/13/10 (0)
- Disagree with mid - badman 15:46:54 11/11/10 (4)
- Not so - Timbo in Oz 16:33:21 11/11/10 (3)
- Bad example - badman 09:37:26 11/12/10 (2)
- the mid pod has effectively a 90 degree edge with very little rounding, so diffraction will not be smooth. - Timbo in Oz 10:59:15 11/12/10 (1)
- RE: the mid pod has effectively a 90 degree edge with very little rounding, so diffraction will not be smooth. - badman 15:23:55 11/12/10 (0)