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sound. The curved film guides before and after the sound drum eliminate weaving or "belt action."
In the sound-optical system, light is directed from a prefocussed exciter lamp directly through semi-cylindrical lens, eliminating the usual mechanical slit and mirror.
The sound output is rated at .15 watts, and is reproduced from a 12" permanent magnet dynamic speaker. Reproduction is crisp and clear, and the tone is particularly pleasing to one accustomed to 16 m.m. sound.
The projector is attractively finished in bronze, and is delivered complete with lens, lamp, speaker, accessories and new luggagetype carrying cases.
Wholesale distribution in Britain is by SimplexAmpro, Ltd., of 167-169, Wardour Street, London, W.i, and readers are invited to write to them direct should they require further information or the current literature. The company will also be pleased to assist owners of existing Ampros for the supply of spare parts and instruction books, providing that the latter are still obtainable. Some Ampro models have been obsolete for a number of years and therefore such literature may not be obtainable now.
Voltage — 105-125 A.C. Use a transformer with A.C. 230-volt mains, and connect a 150-watt Convertor for D.C. to the amplifier. The motor is universal, but the amplifier is for A.C. ONLY. Total power consumption is approximately 1,350 watts.
The Ampro "Imperial"
This silent projector is one of the best of the post-war models. It is light, compact and portable, and has every feature of the "ideal projector" — greater simplicity, longer service, and lower operating cost.
The Imperial is quite easy to set up and operate. All the owner has to do is unfold the spool arms, then thread the film and start.
The "still" picture-button permits stopping at any frame indefinitely, an automatic safety-shutter preventing the film from burning of blistering. The reversing-switch may be used without stopping the motor, and a new fast automatic rewind-device obviates the usual changing over of spools. Threading is sur
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