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In the Forum: Horn-Loaded Speakers
In the Thread: Horn loaded ribbons and other Vasyachkin’s tangents....
Post Subject: Plane, line, point sources...Posted by horny on: 11/4/2008
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 Vasyachkin wrote:
 Romy the Cat wrote:
Romy is trying do not create problems that need to be addressed by the ideas of waveguides.


well the way not to create problems is have a giant electrostatic panel.

starting from that point we create problems in an attempt to make the speaker smaller and more practical.

certainly i am creating problems by curving the ribbon and loading it into a waveguide - but it is not without a reason. it allows for a smaller ribbon. if cost was no object i wouldn't do it. i would simply run a ribbon from 1 foot above floor level to about 8 feet above floor level. i hope you agree that a ribbon that is maybe 6 inches long is potentially cheaper than one that is 7 feet long.

i definitely believe that line source will always outperform a point source ( and a plane source will outperform a line source ) but point source is just CHEAPER.

my idea of a curved ribbon is intended as a COMPROMISE between a point and a line source which allows for a certain degree of optimization via differeing degrees of curvature as well as different shapes of waveguide.


Mentioning line and plane sources (and dipoles) at Romy`s site is sort of forbiden. I believe Romy`s Macondos are the closest to the perfect horn loudspeaker, but are they the closest thing to the perfect loudspeaker, whatever that may be? I am not sure. Although I experimented with a similar configuration for about a year, just to get a taste of it, I changed the route to 2m tall ribbons that differ from the breed in some specific construction details (works in progress). They do offer some advantages that horns have problems with (no nasty harsh breakups and hardening of sound in the upper midrange, along with loss of separation on orchestral climaxes and choirs), but of course may have other drawbacks. Speaking in general, I feel true full range ribbons have the greatest potential of all technologies, but are of course nowhere near exploited.In any case, I intend to further investigate Macondo style of horns in the future, when new L`cleach horns are ready but I fear the results are predictable. Well, that`s it, I`ve just said it...
Cheers!

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