Business screen magazine (1938)

^■"A!a'Ws?fi*hr«%wcr-^ar««*^'^-5W»<*s^ AMP SPEC R O S O ■ F I C A T DEL F E A T U Sound Head Features in Model U {jrev>-nl st'ratching picture and sound Imck Sidr tension : side of film ussurps Kmunlh. Nirady projection. Film Path— All parU which cunUrl lilm an dcsiKncd on sound track sidp. and prt^^un pad H-nsion r.n >priir Film Protrciton— A triple claw is used for mcivinR lilm. entniflinii Ihrw spriKket holes simullaneuusly. Film with two adjacent turn holes can be Kucrossfully used \mpro palenl«-d "kick-back" movement ItfLs the claws from Ibe sprocket holes befofv withdrawinK, eliminating; film wear Take-iip compea-salwr prevents KlartinR strain Sound Drum and Filler— Mounted on precision ball bearinp; The rotating type of Hound drum avoids sliainfc action between the drum and film— prolonps film life and maintains hiifh (|ualily sound. Curved film fcutdes before and after sound drum eliminate weavinR and "belt action." Sound Optical Sv»tem— Projects filament imape of exciter lamp directly IhrouKh cylindrii-al lean, eliminating mechanical slil buJ mirror (l\o rleaning required,) Simplifi*-d ThrradinfE— ^me as threadinp silent projector, with exception that film also loops around Konnd drum. • liminatinK lofkinn film over a third sprocket. Film (njide:« os.sure correct, easy ihreadinK Sinning Switch— Automatically disconnects sound when in "Off" position, preventinn jector is coming to rest or being threaded. PrefocuMcd Exciter Lamp — Cannot be inserted wrong, requires no adjustment \pprt>*al'AII Amprosound ModeU •« approved by UNDERWRITERS' LABORATORIES. Ucen««— Licensed under Western Electric Patents. Amplifier Features in Model (' CUst. A Plus Amplificalion— Highest quality u used in broadrastinjf Permits hea\ > overl.iading Sound Bepiwluclion — Matches one or two speakers without internal rhanifcs. Speech Tone Control— For crisp, sharp speech reproduction Spcukcr-HloB Elimtnatoi^Enables the operator to obtain full volume without hiss even at low voltage Amplifier Signal Light— Indicates when amplifier is on and also designates location of volume and lone control insulated with rubber Has non-breakable telephone jack for kntiis on the amplifier when rooms are darkened KuRged Speaker Cable— Two wire cable heavil ln)uble-free connections. Acoustical Adoplotion— With pood acnuslics have doors of speaker open and stronp natiu-al bas.s frequencies will lir n-pnxliici-d If acoustics are poor, close speaker doors for sharp, crisp s|(eerh. w ithoul confusion of l>ass frequencies Torpedo Speaker* Available— -Have directional properties which throw sound directly down on audience, pre «enlin(i side reverberation Standard Aeeesi.orie« A 1600 fl. reel. 10 ft. line lOrd. SO ft. speaker cord, lamp, 2 inch lens bottle of Amproil, oil i-an, cleiininj; brush, box of fuses, extra exciter lamp, instruction book and carrying cases. Standard finish is Ampro Urown. crinkle-baked enamel with Chromium Plated and Stainless Steel litlings Miirt>phone and PhonoRruph Receptacle — On all Amprosound Models. Microphone Sv.itch — Pemiils speech from microphone lo accompany silent films. \2 Inch Auditorium Speaker— With permanent magnet field has extra jack for multiple speaker operation linronditional Guarantee by Ampro— Against defective material and workmanship (The guarantee for lenses, lamps and tubi-s is s/-! by the manufacturer of these items.) For lamps, lenses, screens, splicers, tubes and all other accessories write Ampro Thr i3 Standard 4mpra Frojrctian tpefifiealioni, lUlrd on "iiitrnt" ntalofur jh«-l. atr incorponteH on oil Sn„nd-On-Film ModrU n>inplete linr of 16 m/m pmjn-Ujrii, THE AIMPRO CORPORATION • CI 28. -IS-. II NORTH WEST iCAGO, ILLINOIS nni AVBNVK Complete detailed specifications as above appear on the back oi each illustration oi every Ampro model. Send for this new "To Business Screen: In the establishment ol Business Screen, we see the final recognition by Industry of motion pictures as a permanent, eliective selling tooL Our sincerest wishes lor your continued success." Axel Monson President The Ampro Corporation AMPRO 1938 CATALO The page reproduced above is typical oi the detailed fad that Ampro provides in its description of each of its modeli This particular page shows the sound specifications of tb recently announced newpowerful 750 watt A.C. operatei Ampro-sound Model "U" — that lists at only $395 — thi year's oiitstanding value in Sound-on-fibn projectors! Sim lar detailed, factual descriptions are giveL on all Ampn silent sound and convertible projectors. With these facts a a basis — rather than mere claims — you are in a better pc sition to judge projector values scientifically. Truly — thi latest Ampro brochure is a text-book on modern projectors Send for your copy Today! AMPRO PRECISION CINE EQUIPMENT Ampro Cur|>ornlinD, 28,39 N. Western Avenue, Chicago, III. AMPRO CORPORATION 2839 N Western Avenue. Chicago, Illinois Please send me the new 1938 Ampro catalog. I am particularly intrested in □ Ampro 16 mm. Silent Projectors G Ampro 16 mm. Silent Models that can be converted into sound Q Ampro 16 mm. Sound-On-Film Projectors Name. — Address (Ampro distributors are established all over the world. Wrile for name of dealer most convenient to your locality.) ».--■