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Virtual Localization by Blind Persons - July 2012
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Effect of Spatial Location and Presentation Rate on the Reaction to Auditory Displays - July 2012
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A High Power Stereo OTL Amplifier
At the 1956 meeting of the society I described and demonstrated an OTL power amplifier that aroused much interest. Hundreds of audio fans built this amplifier and their satisfaction with its performance is attested to by their letters to me. Two deficiencies of this amplifier were its limited output (by today's standards), 18 watts which resulted in a direct current flowing through the voice coil of the loudspeaker when the output tubes had aged sufficiently to change their characteristics. These two drawbacks and the advant of stereo has led to the development of the present amplifier, described in this paper.
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