Title link takes you to shots pulled from this auction.Details:
"This is an auction for an original EMS Distance to Voltage Converter prototype. The item is in mint condition and is fully functional, looked over by a service tech. This item belonged to the EMS Canadian distributor Otto Joachim, therefore it has no serial number. The item comes with the original DTV brochure and a signed letter from Robin Wood to Otto Joachim describing how to use the unit and a couple of patch ideas. The letters have crease marks due to being folded for an envelope. Here is a brief description from the brochure.
EMS have developed the DTV-- a controller which provides employs an invisible beam to provide a completely different approach to sound control.The DTV projects a slightly conical ultrasonic beam, whose length can be varied between 2 and 10 meters. Any object cutting the beamcauses 2 separate outputs to be generated. The Distance voltage varies according to how far along the beam the cut occurs, and the Gte voltage is held 'on' for the duration of such cuts. Our gestures can be used to activate and moodulate the process of sound synthesis with literally dramatic effects. Movement and MusicCan be directly linked for the first time.
Range: adjustable from 2 to 10 meters Beam Divergence: 8 degrees Resolution: + or - 1% over entire range Distance voltage swing: + or - 3.5 volts
Gate voltage: +5 volts Power supply 240 or 115 volts AC, 50 - 60 Hz. 15 watts Dimensions: 240 x 250 x 70 mm. Weight: 2 kg"
Note two different EMS SoundBeams posted here. I wonder how many different models there were.
via DK (aka gentle bakemono).
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