This is known as the official Laboratory model C19 – introduced in 1919. Features a Chippendale Mahogany cabinet, diamond stylus reproducer with a laminated paper diaphragm.
It has a gear mechanism to move the the reproducer arm across the record, other gramophones rely on the record grooves to do this.
Other features:- Variable speed turntable, Volume control, Double spring motor, 15: internal horn, storage in the cabinet for 72 records.
Edison manufactured special discs to play on his Diamond Disc machines. These are known as Diamond Discs & compared to other records at the time were superior in sound reproduction. They are 10″ in diameter & 1/4″ thick. The grooves are vertically cut & the speed is 80 rpm. Can play up to 5 minutes.
His Masters Voice
HMV Studio Grand No 2 Mahogany Cabinet Gramophone 1920’s
Victrola Model VV100
Victrola USA 1923 Mahogany cabinet, two spring motor, nickel plated fittings.