AF® - Audio Fidelity® A Study in STEREOPHONIC HIGH FIDELITY Sound
Audio Fidelity inc. 770 Eleventh Avenue, New York 19, N.Y.
Printed in U.S.A. Copyright 1959 By Audio Fidelity, Inc.
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Original Plastic inner sleeve Mention :
Audio Fidelity - A Study in HIGH FIDELITY Sound - for those who can HEAR the difference !!!
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Back side of Jacket :
Teach Where CHA CHA CHA come from and How to dance CHA CHA CHA with Foot Moves.
Also mentioned, Sound Recording Specifications :
TECHNICAL DATA ( RIAA ) Total Frequency Range Stereophonic Recording
This High Fidelity Stereophonic Recording was produced featuring the Frey Stereophonic Curtain of Sound technique.
When heard on a balanced playback system, the elements or musicians on the recording will be reproduced in the exact locations, directionally, as the original performance.
This original, positive technique to produce a pure, true Stereophonic effect so that the instruments or elements of the recording are perfectly relocated as to direction of sound is an Audio Fidelity development and is true Stereophonic reproduction.
This recording was made on an Ampex 350-2 with special Electronic Circuity, using Altec, Electrovoice, RCA and Telefunken microphones.
The Masters were cut with an automatic Scully Record Lathe Mounting a Westrex 45-45 cutter with special feedback electronic circuity driven by custom 200 watt amplifiers.
Precision Mastering was done so as to achieve maximum stylus velocity consistent with minimum distortion, resulting in the ultimate in channel separation and realizing the greatest possible signal-to-noise ratio.
While the total frequency range of 16 cps to 25.000 cps on this record may not be within the range of ordinary human hearing, nevertheless inspection of the grooves with a microscope will show the etchings of the upper dynamic frequencies.
It is the opinion of the manufacturer that if these frequencies were omitted from this record a certain warmth of tone that is felt and sensed rather than heard would be lost.
For this reason and to achieve the ultimate in our " Studies in HIGH FIDELITY STEREOPHONIC Sound " we have gone to these extreme electronic lengths.
Although any 33 ⅓ Stereophonic Record playback equipment may be used in playing this recording, it is recommended that playback equipment of extreme wide range and fidelity be used so that the recording may be enjoyed to its utmost.
Low Frequency Limit - 16 cps High Frequency Limit - 25.000 cps Crossover - 500 cps Rolloff - 13.75 DB at 10 KC
Audio Fidelity Records produced and released the World's First Stereophonic High Fidelity record in November, 1957.
