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We know, of course, that film-gates should open somehow and without too much trouble, but we never went so far as the man who decided that "the gate had better come right off and be done with it!" It can be entirely removed in one second for easy and rapid cleaning, and it goes back just as fast. For threading, however, the gate swings open in the normal manner — and without falling off.
Other features of this remarkable projector are listed below : — Lamp — Standard 750 or 1,000-watt pre-focus. Lens — 2" F.i. 6 "super" bloomed. Condenser Lens — Large 2-element aspherical type. Motor — Sturdy, slow-speed, heavy-duty type. No brushes or
governors. Gate — Completely removable by merely lifting it out. Threading — Very simple, and can be done with one hand. Take-up — Automatic and with compensation. Rewind — Automatic, and without changing spools or belts. Speed — 16 and 24 frames per second. Motor speed is constant
within 1% even when mains voltage is fluctuating 10%. Controls — Lamp and motor switches are interlocked but can be
used separately. Sound /silent switch. Tilt control, theatrical
framing, volume and tone controls. Inputs for microphone or
non-sync. Spool capacity — Up to 2,000 feet.
Amplifier — A powerful four-stage amplifier which utilizes the "inverse feedback" principle. It's specifications are: — Gain — 118 db, photocell input; 118 db mike input. Input impedance — 85,000 ohms (microphone jack). Power output — 20 watts; less than 5% distortion. Output Level — Plus 35 db. (db. = decibels). Speaker — 10" permanent magnet.
Voice coil impedance — 8.0 ohms. Sensitivity — 97 db. at 4 feet with one watt input. Power requirements — (With 750-watt lamp), 1,000 watts (105
125 v. A.C.). Cables — Speaker, 50 feet. Power, 15 feet, with moulded connector plugs. Weight (gross) — Projector-amplifier case, 59 lbs. Speaker case,
29 lbs. Finish — Medium brown Spanish-grain leatherette.
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