Projection engineering (Jan-Dec 1931)

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A THEATRES-AIRPORTS CONVENTION HALLS AMUSEMENT PARKS "There Is A RACON For Every Purpose" RACON'S LATEST TYPE PORTABLE HORN Portable Horn Model 3320A New type portable horn number 3320A air column length slightly less than 7 feet. Oval bell 27" x 35", depth 28" Can be separated in two halves for portability. Excellent for speech as well as music. Air Column slightly less than 10 feet. Depth 30 inches. Bell 30x40 Inches. Weight 30 pounds. Improve your Sound Equipment with RACON Speakers and Watch Results! Our Latest Catalogue Is Yours Upon the Asking RACON HORN 5325 Especially Appealing Where There Is Very Little Space Between the Screen and Wall Amplifies as perfectly as the parent horn, No. 4320, on both speech and music Patented non-vibratory, non-porous material and construction, plus light weight, which makes for perfect results and maximum convenience These outstanding features of RACON products have made imitation and competition impossible. GIANT ELECTRO DYNAMIC HORN UNIT Weight 20 lbs. Field consumption approx. 1 amp. at 0 volts. Rating 30 watts, continuous operating load 10 watts. Racon hornt and units are covered by U. S. Patents Nos. 1.307,711. 1.501,032, 1,577,270. 73.217. 73,218. 1.722,448, 1,711,514, 1,781,489 FACTORIES: 18 to 24 WASHINGTON PLACE, NEW YORK SLOUGH. BUCKS. ENGLAND AND 3 MUTUAL ST.. TORONTO. CAN.