Cassette Hook-up for Elmo KS-100SM Projector

[capul8]

On the back of my Elmo KS-100SM Projector (Reg & Super 8) is a cable socket with the words:
"Synch Socket for Cassette Recorder Elmo SR-1"
Obviously, I don't have a manual.
I'm trying to figure out the sound playback capabilities.
There is a sound (musical note) stop on the main drive knob, but no other audio in or out, and the unit doesn't appear to have any recording or playing heads anywhere.
The "synch socket" isn't quite 1/4" and has a threaded nipple.
Anyone out there familiar with this machine?
Anyone have an Elmo SR-1 Cassette Recorder?
Think another kind will work?
Where to get cable?

BTW: Best Video transfers I've ever made were with this little guy.

Thanks for the help.
Bernie

[cameraguy]

The R-1 socket is delivering a 1 pulse per frame reference for the projectors running speed. It was meant to be used in conjuction with the Elmo cassette recorders (SR-1, DR-1), the R-1 synchronizer and the 110R, 618R or 1018R cameras. Nowadays these items are all pretty rare which I take as nobody was buying them (probably cause sound film came out soon after the Elmo R-1 system). You don't need all this stuff to use your projector's R-1, any home made pulse generater (didn't "Pedro" post one) and synchronizer could be made to work.

[#Pedro]

I don?t know this special Elmo machine. But if it provides a bright, good image and really outputs 1 pulse per frame, it maybe worth to complete the sync equipment, as THERE ARE actually all devices available.

If the socket of the projector is similar to the ELMO GS1200 series (the point I could not figure out of your post), all is pretty easy. The GS1200 has an pulse INPUT and regulates itself to the pulserate at it?s input. You use any stereo cassette recorder and record the live sound on one track, the pulses of your camera (w/my pulse interface) on the other track. You start the tape always before you start shooting.
For play back, you connect the pulse track of the tape to the projectors sync input, using an interface cable (still available in Germany, or self-made). This interface cable should transform the tone pulses on the tape to TTL compatible switching pulses (0 V low, 5 V high). With sync cable connected, the projector will keep in a stand-by "waiting" position, expecting tape pulses. With the first valid incoming tape pulse, the film will start running in sync with the tape, until the end of the pulse sequence. This way, you always have your film automatically in sync with the tape. The GS1200 can record the tape?s sound to the film?s soundtrack at the same time.

If the socket of your machine is only a simple pulse OUTPUT, the projector is propably not controlable. Then you need a more sophisticated equipment.

For shooting, you need a pulse interface, which tranforms the single frame contact signal of the camera into a 1000 Hz beep sequence. Best you use the Gebuhr pulse generater which is so small that all the electronic is inside the connection plug. To record this beep sequence along with the live sound, you need an AV tape recorder (AV = audio vision). Such a tape recorder has a 3. sound head (for pulses or pilot tone) and, most important, it?s speed is controlable from an extern synchronizer. The German company Gebuhr is actually converting several Sony tape recorders to AV standard and offering ready converted items as well. (The AV socket provides pins for speed control, additional head, start-stop-control and power supply for the pulse interface.)

For play back, you need the Gebuhr synchronizer. It has an input for the projector signal (projector = master device) and another input for the AV tape recorder (slave device). When showing the film, the synchronizer analyzes the pulses coming from the projector and the tape, compares the two pulse rates and regulates the speed of the tape according to the pulse rates.

The system offers great editing possibilities, making linear film and sound edtiting really simplier than digital editing.


Pedro

[Konton]

The Synch Socket is just to synchronize the starting of the tape recorder with the projector. Is does not keep the projector in synch with the tape recorder. Too bad. But they, I found this on the net for ya: http://www.instruction-manuals.co.uk.../elmo/elmo.pdf
You got to love it when you can find the manuals you want easily enough online. It only took one try!