Critic's Corner

RE: gives a more ideal radiation pattern

83.84.178.82

In Reply to: RE: Here is what Geddes says: posted by morricab on February 01, 2008 at 02:11:01

I think that to this day no one has actually determined what the ideal pattern is. The only statement in this context is from Toole says that FR on-axis should be flat (± 1.5 dB), FR off-axis smooth and well behaved. Geddes has his opinion Dave Moulton has the opposite opinion, there is not much research available, so it appears to be a matter of opinion at this stage.

>He [Geddes] points out that omni-directional speakers (like nearly all smallish box speakers) have big problems in small rooms with early reflections and that damping them is not the solution.<

In 2006 Floyd Toole has published a very interesting AES paper entitled "Loudspeakers and Rooms for Sound Reproduction—A Scientific Review" (where he reviews 75 technical/scientific papers). Also the issue of early reflections is addressed. Toole comes to the conclusion that early reflections are no problems.

I've read most of the papers he cites and did some digging in relevant technical journals and yes, there is no evidence that early reflections are a problem. So I wonder on what evidence Geddes bases his statement.

But that's an issue which is more at home in the Rives forum, where it actually is being discussed at the moment.

Klaus

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