Business screen magazine (1938)

SOrXD PROJECTIOIV 16niiii. Motion Pictures AMPRO CORPORATION 2839 AorM Wesiern Avenue Chi(<ni,o. Illinois ■^ Precision >vorknian»hip and simple excellence of design have distini^uishecl the 16nitn. Soimd-itn-Kilni and Silent Projeclors inanii far lured hv The Anipm Corporation. Industrial .>>chooI and organization may choose a full line of models constructed lo meet the special needs of various kinds of users. An unconditional guarantee against defective material and workmanship is offered. (The guaranty for lenses, lamps and tubes is set by manufacturers of these items.) All models are complete with operating accessories. i Aniprosouiid Model "X" & "Y" iVfodel X capacity, 1600 feet sound film only. Permanently attached reel arms . . Equipped with A.C motor and 8< inch dynamic speaker with permanent magnet field, eom> plete in one case . . Operates on 100-120 volts. 60 cycles A.C. Use with 300 watt converter equipped witli constant speed governor on D.(^ current . . Model Y capacity, 160O feet sound or silent film. Permanently attached reel arms ■ ■ Equipped with Universal motor and 12'inch dynamic speaker with permanent majinet field, complete in two cases. Also available in one case with 8-inch speaker ■ ■ Operates on all cycles A.C. I'se with 150 watt converter on amplifier only for D.C. current . . Both modeU have 2-inch focal length Fl.»5 objective lens. Additional charge for F1.65 lens. Other sizes from 1-inch to 1-inches . . Operates with standard prefocused base . . 730-1O00 watt projection lamp . . Centralized and illuminated control panel . . Automatic rewind. Pilot lie;ht. Automatic fire shutter. Centrifugal fan cooling system. Tilting device . Sound drum and filter mounted on precision ball-bearings. Prefocused exciter lamp . . Amplifier has 7 '/■> watts undistorted output . . Microphone and phonograph receptacle . . Model VS with reverse and still picture button available . . Approved by llndervt riiers' I.aboratories . . Licensed under \(estern Electric and R.C.A. p.-itents . . Listed under Fair Trade Agr. i Amprosound Model "U" Capacity. 1600 feet sound or silent film . . . Permanently attached reel arms . . Standard T.'IO wntt or under projection lamp . . Projector operates wtlboul converter on D.C. or 25 to 60 cycles A.C. . . Amplifier operates on 50-60 cycles A.C. current only. For D.C. use 150 watt converter . . 2'inch focal length F).65 objective lens. Inter* changeable with 1-incb to 4-inch lenses . . Button control for "still" projection with automatic safety shutter. Reverse switch. Automatic rewind. Speed control knoli. Motor has grease sealed ball-bearings. Pilot light is operated by switch. Centralized control panel. Adequate cooling systemProjector tilting device . . Sound drum and filter mounted on preci!.ion ball-bearings. Prefocused exciter lamp . . Amplifier has 15 watts undistorted oul|iut: ample power for ^eatings up lo 1500. Speech tone control with speaker-hiss eliminator. 12-inch auditorium speaker with extra jack for multiple speaker operation. Acoustical adaptation . . Micro, phoue and phonograph receptacle. Microphone switch for silent films . . A two case unit . . Approved by the Underwriters" Laboratories . . Licensed under Western Electric and R.C.A. patents . . All projector features listed for silent models are tncludeil in ibe Amprosound Model ''LI" . . i Amprosound Model "UB" Same as Model "U". Includes sound proofed "blimp" case for extreme quietness of operation . . Capacity. 1600 feet sound or silent film. Permanently attached reel arms . . Standar<I 750 watt or under projection lamp . . Projector optrales without converter on D.C. or 25 to Mi cycles V.C. . . Aniplifier operates on .50.60 cycles A.C current only. For D.C. use 150 watt converter . . 2-ineh focal length F1.65 objective lens. Interchangeable with l.inch to 1-inch lenses . . Button control for 'Still" projection with automatic safety shutter. Reverse switch for bolb silent .nnd sound film. Automatic rewind. Speed control knob. Motor has grease sealed hall-bearings. Pilot light is operated by switch. Centralized control panel. Adequate cooling system. Projector tilting device . . Sound drum and filter mounted on precision hall-beurings. Prefocused exciter lamp . . Amplifier has 15 watts undistorted output; ample power for seatings up to 1500. Speech tone control with speaker-hiss climinalor. 12-inch auditorium speaker with extra jack for multiple speaker operation. Acoustical adaptation . . Mirropho.ic and phonograph receptacle. Microphone switch for silent films . . A two case unit . . Approved by the Underwriters' Laboratorien . . Licensed under Western Electric nnd R.C.A. patents . . All projector features listed for elleiit models are included in the Amprosound Model "UB" . . i Amprosound Model "W C;,,,acil,. 1600 feci -ound or silent film . . Standard 7.^0 w.itt or under projection lamp . . Projector an.l auiplifier operate without converter on both D.C. or 23 to 60 cycles A.C. . . 2-inch focal length F1.65 objecli^e ll■rl^. Interchangeable with l-inch to 'l-incli lenses . . Butiiin control for "still" projection with automatic safety flintier. Reverse switch for both silent and sound film. ^iiliMualic rewind . . Speed control knob . . Motor has :;rease -ealed ball-bearings. Pilot light is operated by switch. Centralized control panel. Blower type cooling s>stem. Projector tilling device . . Sound drum and filler miiunled on precision ball-bearings. Prefocused exciter laiii]> . . Amplifier has 10 watts undistorted output; ample poMcr for seatings up to 1O00. Speech tone control. Acoustical adaptation. 12-inch auditorium speaker with extra jack for multiple speaker operation . . Microphone and phonograph receptacle. Microphone switch for -ilent films . . A two case unit ■ . Approved by the Underwriters' Laboratories . . Licensed under Western Electric and R.C.A. patents . . Listed under Fair Trade Agreement . . All projector features listed for silent models are included in the Xmpro'.ound Model "N" . . i Amprosound Model "NB" Same as Model "IN". Includes sound proofed "blimp** rase for extreme quietness of operation . . Capacity. 1600 feet sound or silent film . . Standard 750 watt or under l>rcijection lanijt . . Projector and amplifier operate without converter on both D.C. or 25 to 60 cycles A.C. . . 2-inch focal length F1.65 objective len-. Interchangeable with 1-inch to 4-inch lenses . . Kulloii control for "still" projection with automatic safety shutter. Re>er>e switch for both silent ami sound film. Automatic rew ind . . Speed control knob . . Motor has grease scaled ball-bearings. Pilot light is operated by switch. Centralized control panel. Adequate coaling system. Projector lilting device . . Sound drum and filter mounted on precision ball-bearings. Prefocused exciter lamp . . Amplifier has 10 watts undistorted output : ample power for seatings up to 10OO. Speech tone control. Acoustical adaptation. 12-inch auditorium speaker u ith extra jack for multiple speaker operation . . Microphone and phonograph receptacle. Microphone switch for silent films . . A two case unit . . .4ppro^ed by the Underwriters' Laboratories . . Licensed under Western Electric and R.C.A. patents . . Listed under Fair Trade Agreement . . All projector features listed (or silent models are includeil in the Amprosound Model "NB" . . i Amprosound Model "L" Capacity, 1600 feet sound -ile filil tdard 750 wall or under project in it lamp . . Projector operates without converter on D.C. or 25 to 60 cycles A.C. . . Amplifier operates on 50-6O cycles A.C. only. (25 cyclea available I. For D.C. use 150 wall converter . . 2-inch focal length Fl.6.5 objective lens. Interchangeable with 1-inch to t-inch lenses . . Button control for "still" projection with automatic safety shutter. Reverse switch for both silent and sound film . . Automatic rewind . . Speed control knob. Motor has grease sealed ball-bearings. Pilot light is operated by switch. Centralized control panel. Vilcquate cooling :-ystein. Projector tilting device . . Sound drum and filler mounted on precision ball-bearings. Prefocused exciter lamp . . Amplifier has 10 watts undistorted output wilh two speakers: 20 watts with single speaker. Ample volume for seatings up to 3000. 12'inch iiudilorinm speaker with extra jack for multiple speaker o[>eration . . Microphone and phonograph receptacle, with complete mixing for sound from film, microphone and phonograph. W liile projector is in use for silent film, amplifier and speaker can be used separately for microplione talk . . A two case unit . . Approved by the Under. writers' Laboratories . . Licensed under Western Electric ;niil B.<:.A. patents . . Listed under Fair Trade Agreement. i Ampro-Arc Model "AA" flai.acily, 1600 feet sound or silent film. Perniunentl> .ittached swivel reel arms . . High intensity type lamp house. f:arbons have minimum capacity of .30 amperes at 28 ^olts. Screen illumination. 65l> lumens (minimum). Motor driven c.-irbon feed. Automatic safety device to disconnect arc when lamp liouse door is open. Full wave rectifier . . Projector and amplifier operate on 100-125 volts, 50-60 cycles A.C. . . Standard 3.inch F2 lens. Other sizes available . . 1 riple claw mo%ement. Automatic safety shutter. Pilot light. Aulomalir rewind. Motor has grease scaled ball hearings. >lanually operated rheostat for variable speeds 16 tO 2 1 frames per second. Forced-air cooling . . Projector stand has swivel attachment and tilting device. Collapsible . . Sound drum and filter mounted on aeroplane tyi>e ball-bearings. Prefocused exciter lamp . . Amplifier has lO watts undistorted output wilh two speakers. Maziutuni output of 50 watts. Separate volume controls for souihI film, microphone and tone . . Two steel torpedo permanent magnet type speakers. Mounted on tripods . . Microplinne and phonograph receptacle, with complete mixing lor sound from film, microphone and phonograph . . Designed to conform with the requirements of the lenderwriters' Laboratories . . Licensed under Western Klectrio and R.C.A. patents . .