The Talking Machine Forum — For All Antique Phonographs & Recordings

My wife usually has the BBC TV Breakfast programme on in the morning (can't stand it myself) but today they actually reported something interesting!

The Denman Horn was commissioned by the Science Museum in 1929 as a giant loudspeaker, but it is relevant to this forum as it employs a 27 foot exponential horn. It has recently been restored and is now on public display. Details can be found at www.sciencemuseum.org.uk/exponential horn.

The TV feature went out on BBC1 at about 07.50am today, and should be viewable on the BBC iPlayer. Someone more computer savvy than me might be able to post a link to it.

Here is a fix for the above link.

http://www.sciencemuseum.org.uk/exponentialhorn

Clay

Here are two newspaper articles and a YouTube link.....

http://www.newstatesman.com/cultural-ca ... outemaster

http://www.theguardian.com/music/2014/m ... topher-fox

https://www.youtube.com/watch?v=2yQ2IQ2b_YE

The final cross-section of the horn mouth is quoted as 7 feet 1 inch square.

It is also interesting to note that reference is made to some missing frequencies in the upper range. Might this have to do with the square, rather than circular, section ?

The article by Christopher Fox (Guardian) is particularly interesting and well-considered in my view.