THE MAGNAVOX

Evening Post, Volume CIII, Issue 83, 8 April 1922, Page 6

THE MAGNAVOX

DEMONSTRATION OF SOUND AMPLIFICATION.

■ A comprehensive demonstration of'the remarkable capacity of the Magnavox to amplify sound was given by the management of the recently-formed company, Magnavox Australasia, .in the Concert Chamber last evening. The device, which may be described as a twentieth century electrical megaphone, is used in America, where the original patent-was taken out, chiefly as a .means whereby a speaker may address huge gatherings. In such a hall as the Concert Chamber the megaphone use of the Magnavox could not well be demonstrated, bat a series- of other tests carried conviction to those who had doubts as to whether the instrument ivas capable of fulfilling all the claims msde on its behalf. A watch ticked as loudly as a tack hammer hammers and with much greater regularity, and a. second watch held to a telephone transmitter at Oriental Bay proved that a mile or so makes no 'difference to the Magnavox. Gramophone records were taken over the 'phone; the Empress Theatre orchestra was transferred over the wires to the hall, and other instrumental music was brought ■to the hall in the same manner without losing quality as it gained in quantity. The experiments with wireless: signals and with wireless 1 telephony were the surprises of the evening. Time signals to shipping were blared out in Morse code a,t 8.30 p.m. (Bordeaux time); a trombone solo, played at Courtenayplace, was taken up ; gramophone records followed over the wireless, telephone, and the final and brightest test of the evening was the receiving of a vecal solo by Mr. Herbert F ; Wood over half a mile of space. A demonstration was also made with the Magnavox Home Telephonograph, a small size Magnavox, which may be attached to any gramophone, and of the anti-noise telephone which transmits the human voice but takes no notice of the din around.