“Daddy, that’s a loudspeaker!” exclaimed a younger me. I had
drawn a huge triangular shape on a large A1 sheet. It was a 5 year old’s delineation
of a rusty ‘Ahuja’ trumpet horn
speaker. I found trumpet horn speakers fascinating. They are conical structures
with a tapered frustum protruding from within them. These days you would only
find them hanging atop railway platforms used to announce vital train stats. I
wondered how they could produce such...
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