User manual BOLEX B8

[. . . ] (including To release the retracting handle, press down and push it towards the back of the projector. To replace, fully depress the handle and push forward. 100 % automatic threading with BOLEX 400 ft. lamp 40 % of its full power Silent or sound projection Speeds: 18 and 24 f. 12 V/100 W iodine-quartz Lamp warming-up at approximately Separate motor for cooling Socket for intermission Counter: light 1 unit = about 25 frames Transistorized Built-in 2 W/5 amplifier, 4W power output with 5% harmonic distortion +5 ohms loudspeaker Connection for external 6 W/5 Tone control during playback + 5 ohms loudspeaker Recording and playback operated by keyboard switches or microphone Superimposition microphone Sound level control with luminous V. [. . . ] Projecting sound films Sound is reproduced by means of the built-in loudspeaker (position a::] of the switch 28) or the external loudspeaker, fitted into the case. If using the latter, unwind the connecting cable and plug it into the socket 30. Placed near the screen, this loudspeaker provides higher sound quality and power; it works in both positions of the switch. If the switch is turned to a::] position and the external loudspeaker is not connected, the sound is cut off. Removing partially projected film If it is desired to remove a film before it has completely run through: · · First open the gate by swinging out the lens holder. Release the lower sprocket (diagram opposite) by pushing the shoe downwards. · Disengage the film firstly from this sprocket, then from the sound unit and the gate by pressing forwards the small lever k and lastly from the upper sprocket by pressing its lower shoe (I, diagram below). _--. J-'1:::::::-""'S-k 4. Reverse motion In reverse running, projection is of course silent. Pressure is withdrawn from the magnetic sound heads, thus avoiding unnecessary wear as well as accidental erasure. 5. Rewinding Attach the film to the core of the empty spool and move the control switch to R to set the projector running in reverse. 16 Musical fidelity depends on the quality of the magnetic sound stripe applied to the film. We therefore strongly recommend laminated or cemented tracks. An unevenly distributed magnetic coating can shorten the life of the magnetic 'sound heads. The needle in the red segment indicates track, resulting in distortion during playback. saturation of the magnetic · Replace the sound head in playback position by pressing the green keyboard switch. 3. Recording background music · Load the projector and select the desired speed with the projector running. · Using the control switch, place the first frame of the film (or of the sequence to be recorded) opposite the film gate aperture. · Turn the counter to zero by moving the milled disc downwards. · Run the projector in reverse for a few moments until the numbers 997 (or lower, if you have a sufficently long lead-in tape), appear in the counter. This enables the motor to attain its normal speed and thus prevents any risk of wow and flutter at playback. · Move the control switch to M (lamp switched on at reduced power). The projector is running and you can follow projection during the recording. When it indicates zero (or when the first frame of the sequence to be recorded is projected), quickly press the two red recording switches and engage the tape recorder or record player, one or the other having already been prepared to play the chosen music. During knob C). recording, correct the sound level if necessary with the volume control · Press the green playback key at the end of recording. The same procedure can be followed when recording sound effects from a record or a tape. Note: It is unnecessary to re-set the counter at zero every time you interrupt recording. [. . . ] Lubrication We recommend regular lubrication: one or two drops of fine oil should be applied to the lubrication points shown on page 9 after every 20 hours of actual operation. 2. Replacing and centering the projection lamp Remove the lamp-house cover by loosening the screw p. Pull the defective lamp up and out of its holder. When inserting the new lamp (12 V/100 W), avoid touching it with the fingers which damages the quartz. [. . . ]