THE PERFECT LOUDSPEAKER

Radio Record, Volume I, Issue 48, 15 June 1928, Page 13

THE PERFECT LOUDSPEAKER

EFFORTS FOR IMPROVEMENT. The reproduction by your radio sect of t origival sound in the broadcasting studio is no better than the amplify-. ing element, which finally transmits the electrical waves into sound waves, and prvjects them into the air, can make it. Very often a beautiful receiving set is handicapped by the necessity of erpressing itself through the medium a poor Joudsneaker, The loudspeaker is the Jast liuk in the chain from the microphone to the ear of the listener, ind as such should be as perfect as hnman ingenuity can make it. With this in mind, the most recent efforts ol radig eneineers Nace heen directed

toward the imuroyement of loudspeakerg now on tlre market. UNEQUAL AMPLIVICATION. The perfect loudspeaker will tenpro

duce every vibration that originally | strikes the microphone, or at least ; every one that reaches its diaphragm |. in the form of electrical waves. If, these vibrations are amplified in. their original proportions, the reception is remarkably ‘true and clear. If, however, he horn which projects them is of a substance prone to vibrate in the same} ericd, certain of these vibraticns are amplified a great deal, while others not in that period are actually subdued. ' The result, of course, is positive distor- ; tion. | Likewise, if the horn be made of a! composition which does not vibrate at ail, it has the cifect ef muffling. A the sounds: ‘ihe happy medium is a material which will vibrate in. tvne, or | ‘n harmony with all notes, and. conse- | quently amplify ‘all vibrations in their | proper proporticns, resulting in high,

sweet notes, and tow rotes full of reson-! ance, °