National Geographic : 1950 May
New Duo-Cone loudspeaker, developed at RCA Laboratories, achieves the illusion of "living presence." Music /oves""sor of p/efy" For years, working toward the ultimate in sound reproduc tion, scientists have sought for living presence - the illusion that a real musician or speaker is talking, singing, playing in your home. Now, with RCA's Duo-Cone loudspeaker, the goal is achieved. Two cones in perfect acoustical alignment reproduce sound with out distortion - give you every tonal value from a frequency of 30 on to 15,000 cycles. It is in the area above a frequency of 4,000- seldom touched by conventional speakers-that most of the all important "overtones" lie. RCA's Duo-Cone loudspeaker faithfully reproduces every overtone, to the very peak of a violin's range, and faithfully gives you the deep low notes of a bass drum! In addition, the RCA Duo-Cone loudspeaker's wide angle of sound per vades every corner of a room without sharply directed blast or blare. Its re sponse to tones of every frequency is smooth, flowing, and even. See the newest advances of radio, television and electronics at RCA Exhi bition Hall, 36 West 49th St., New York. Admission is free. Radio Corporationof America, Radio City, N. Y. Ideal for monitoring radio broadcasts- AM-FM television programs-RCA's Duo-Cone loudspeaker gets, and passes, its toughest tests from engineers and experts in sound reproduction! RAJ O CORPORA TOAI of/AMERICA IV/or/d leader in Raido - -,rs/- 1 -'T/ev/s/on "Mention the National Geographic-It identifies you"