The Exhibitor (Aug-Nov 1948)

irs EASY TO BUY THEATRE EQUIPMENT THE S.O.S. WAY! RESERVE YOUR FREE COPY OF OUR 1949 CATALOG WHICH LISTS 1001 ITEMS AT THE MARKET'S LOWEST PRICES Save 25 to 40% and More! NEW AND REBUILT APPARATUS ALL FULLY GUARANTEED Our 22 years of selling Theatre Supplies, Pro¬ jection and . Productiorv Equipment to over 3 0,000 theatres, studios and laboratories the world over injures YOU utmost value and expert knowledge of your needs. Whether in Carolina or Calcutta your order receives equal personal, intelligent attention. Our references — any bank in New York. In our large plants, warehouses and asso¬ ciated factories S.O.S. carries a complete stock of practically every item listed. Every sale is guaranteed by a written Warranty Bond. THOUSANDS OF BEAUTIFUL USED CHAIRS In stock, ready for immediate delivery. Contracts with big seating companies give us first choice — we pass them on to you. Prices range from $3.9 5. Prompt ship¬ ment on new chairs $5.70 to $11.95. Send for Chair Price Lists, The Motion Picture Industry's Department Store Now in our new block-long building. S. 0. S. CINEMA SUPPLY CORP. 602 WEST 52nd ST., NEW YORK 19, N. Y. addition to one designed for use in stand¬ ard theatres, a “Hi-Tilt” type, incorporat¬ ing an extreme reverse angle tilt, has been submitted for drive-in theatre use. This last eliminates the need to shore up bases at drive-ins. New Horn To its line of two-way horn systems Ballantyne has added a new one — for smaller houses. The three others all have new low-frequency baffles. The all-new number, Model Fourteen, boasts I. M. Brown, chief engineer, has smooth high-and-low-frequency character¬ istics. The “in-presence” illusion achieved is notable. (The new horn is illustrated on page six) . This improvement is due to the use of a low-frequency baffle, designed without compensating chambers, which have a tendency to distort sound. High-frequency coverage is provided by means of a highfrequency driver unit connected to an allmetal, multi-cellular horn. Models fourteen, twenty, and thirty, all have large, metal-encased, acousticallytreated, high-frequency, multi-cellular horns. To these are attached high fre¬ quency driver units with Alnico Five permanent magnets. Each of these systems have “XL” Alnico Five permanent-magnet, fifteen-inch, lowfrequency speaker units. The makers claim thirty per cent higher efficiency in the con¬ version of low-frequency response with these last than with “any other unit on the market.” Since the speaker units call for more driving power, Ballantyne engineers de¬ veloped the new low-frequency horn baffle for all models. A critically tuned dividing network, with a crossover point of 500 cycles, goes with each of “The Golden Voice of the Silver Screen” two-way horn systems. For adaptation of a system to the acoustical characteristics of an auditorium provision is made for five steps of highfrequency attenuation. Standard input im¬ pedance of this dividing network is 500 ohms. Other products improved by Ballantyne within the year include the PD-Fifty Six dual channel amplifier, and BX “DC” exciter supplies. Big Spread The Nebraska company should have a big spread in St. Louis, since all of these items will be making their debuts simul¬ taneously in the more than forty Ballan¬ tyne dealers’ show rooms throughout the U. S. A. and in Canada. At the same time, a thirty -six page catalogue covering the line will be mailed to some 18,000 theatres, according to J. R. (Bob) Hoff, sales manager. JUNIOR SIMPLEX That old favorite, the Simplex Type SP sound projector, will be welcomed back from the wars at the TESMA show. It is designed to provide professional results in the small theatre. A war casualty for the reason that pro¬ duction on it was stopped during the recent conflict, the junior member of the Simplex line finally has stepped into highgear production for domestic distribution. Until now, the makers have been able to get squared away on it only in the export Junior Simplex Projector field, where demand has been something special. The machine pictured here carries a high-intensity arc lamp (forty amperes and twenty-nine volts) and is set up with a one kilowatt rectifier. National Theatre Supply is offering also Type SP with low-intensity arc and standard Mazda equipment. This side-dish projector is readily adaptable to Four-Star Type E sound system amplification. It is put out for the village house operating nights, Saturdays and Sundays, and for thirty-five milli¬ meter projections at institutions. NEVER-STOP DeVRY During your rubbernecking you imdoubtedly will be attracted by a provoca¬ tive exhibit in the DeVry booth. Here, a sixteen millimeter movie will be running on and on, day after day, without re¬ winding. This phenomenon will be taking place in the recently engineered portable De¬ Vry Bantam projector. The device re¬ sponsible is the invention of a company, named the Triangle Television and Com¬ mercial Films, of Chicago. DeVry Bantam PT-20 PHYSICAL THEATRE DEPARTMENT of THE EXHIBITOR September 22, 1948