Bulent Aliev wrote:

I believe if the whole thing was made by using square, or out of round pipes and shapes it will reduce the noise better.
Maybe that’s why there is no square brass musing instruments? Their horns are all round to amplify the sound.
Buly

You're probably right, but the chance of breaking something goes up significantly if it isn't round. The flat sides will flex & encourage fatigue cracking if it isn't reinforced a lot (heavier).

Charlie

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