| Re: An amazing listening session with the H290C [message #76445 is a reply to message #76442] |
Tue, 23 April 2013 10:38   |
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Wayne Parham
Messages: 18688
Registered: January 2001
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Illuminati (33rd Degree) |
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No, none. Well, a shorter device can be mounted in a smaller cabinet, so I suppose that might be useful in some cases. But qualitatively, no. There is no benefit in having a waveguide shorter than 1/2λ.
Basshorns are usually pushed to 1/4λ, but that's because they are so large and wavelengths so long, the horns must be compromized due to physical constraints. Tweeters should never be designed this way, because wavelengths are short enough that they can be made full size and not compromized.
In fact, JBL makes two versions of its Progressive Transition waveguides, one that is longer which they call "optimized" and another that is shorter, purely done so they can fit it into smaller cabinets.
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