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original: "Tuba Stentoro-Phonica". The title refers to Stentor, a Greek herald in the Iliad whose voice was said to be as loud as fifty men combined.
Sir Samuel Morland was a prominent English polymath, diplomat, and inventor who served as the "Master of Mechanics" to King Charles II.
The INSTRUMENTS (or SPEAKING-TRUMPETS|An early acoustic device, similar to a megaphone, designed to amplify the human voice over long distances.) of all Sizes and Dimensions, are Made and Sold by Mr. Simon Beal, one of His Majesty's Trumpeters: in Suffolk-street.
Simon Beal was a celebrated court trumpeter; his role in manufacturing these devices ensured they met professional musical and acoustic standards.