Richardson's handbook of projection (1930)

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HANDBOOK OF PROJECTION FOR Volume Explain what "volume" really consists of 1075 Horn Location Is the horn directional ? 1077 What is the limit of sound distribution of a horn?.. 1077 Why is the exact positioning of horns in wide auditoriums of especial importance ? 1077 Should the theatre manager or projectionist believe the horn setting might be improved, what is the proper procedure ? 1078 Should the projectionist or theatre manager for any reason feel obliged to alter the horn setting without the service engineer being present, what should be done first? 1078 What is the best sound projector location? 1078 In wide auditoriums how is it best to locate the sound projectors ? 1079 Under what condition is two sets of sound projectors desirable ? 1079 What should be done when the horns are flown?... 1079 When sound projectors are mounted on horn towers or dolly trucks, what should be done in order to secure correct relocation after they have been moved? 1080 Should the manager make periodic inspection of horn location where they are moved about on the stage ? 1080 Variable Density Sound Track Must each individual line in the variable density sound track be separately illuminated in order to secure good results ? 1101 What will happen if two adjacent lines in a variable density sound track be luminated at the same time? 1101 With what kind of a line of light must variable density sound track be illuminated and how must that line be positioned ? 1 101 Western Electric Reproduction Equipment May any kind of sound film or any kind of synchronized sound record be used with Western Electric equipment ? 1 101 The Pick-Up Of what does the optical system of the sound pick-up attachment consist ? 1102 What is the "slit assembly"?. 1102 What is used to locate the slit assembly? 1102 xxiv