The talking machine world (Jan-June 1925)

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April 15, 1925 THE TALKING MACHINE WORLD 14S "Sht SFinegt ^Raftio 'Julie in the W otlik I The Tube of Tomorrow is here Today Power-Plus Type TRUE BLUE TUBES These new tubes double the sound output of standard 6-tube super-heterodynes. Because— they have four times the plate and grid area and twice the filament length of any tubes fitting small 3-volt tube sockets. Operating only on 4 to 6 volts storage battery, they give double electron emission and permit higher plate voltages than any other tubes their size. "With adaptors they fit any standard sockets. Standard Type TRUE BLUE TUBES The only standard socket tubes, guaranteed to be interchangeable without altering set performance. The only tubes built with that intention. They deliver this result because made by the most modern machinery in the most modern tube plant in the world. And — because designed by tube engineers who are authorities. All True Blue Tubes have special blue glass. Now $o Only O 50 Formerly $6 REVOLUTIONARY methods of distribution and anticipation of greatly increased production now permit you to enjoy the unapproached uniformity, noiselessness, crystal tone, long life and luxurious beauty of True Blue Tubes — at little more than the cost of ordinary tubes. Exclusive True Blue Qualities Guaranteed in Writing 1. Interchangeable uniformity. 2. Noiseless operation without shock absorbers. 3. Two to three times longer filament life. 4. No corrosion losses — silver contacts. 5. No conductive losses — non-conductive color bake lite bases. 6. All superiorities guaranteed in writing. 7. All tubes handsomely cased. Order Direct From Your True Blue Dealer Or Write Us Leading radio dealers everywhere are selling True Blue Tubes. If you are not near a radio center we will be glad to supply you direct. Mail us your check or money order giving your dealer's name. Tubes will be forwarded with 10 day return privilege. BRIGHTSON LABORATORIES, INC. 16 West 34th Street, New York, N.Y. BRIGHTSON lPAe DEALERS: The above advertisement has been run in leading newspapers in territories where we have factory agents. There are other advertisements appearing in April which tell of the new price and change in distribution. Get in touch with our nearest representative for dealer's discounts, and attractive proposition. His name is in the list opposite. e TUBES ^ Write Our Aearest Representative PHILADELPHIA OFFICE: Jefferson Bldg., 1015 Chestnut St., Philadelphia, Pa. BOSTON REPRESENTATIVE: Wm. C. Oakes, 832 Park Sq. Bldg., Boston, Mass. MILWAUKEE REPRESENTATIVE: Yahr & Lange, 207 E. Water St., Milwaukee, Wis. DETROIT REPRESENTATIVE: H. C. Schultz, 2831 Gratiot Ave., Detroit, Mich. JERSEY CITY REPRESENTATIVE: Triad Sales Co., Trust Co. of N. J. Bldg., Jersey City, N. J.