The Advent of Stereo?

[fini]

When was stereophonic sound introduced to the general public, and when did it take hold?

[HornEd]

Hmm, if memory serves I was happily monophonic and collecting monaural LP's in 1956... and curiously probing early stereo systems circa 1967 in San Francisco. On that vein, I can't recall the year PWK started his long fascination with "three channel stereo" as described by Bell Labs. -HornEd

[Allan Songer]

1957

by 1967 Mono was dead

[Parrot]

Sgt. Pepper's Lonely Hearts Club Band (in 1967) was the first stereo album my brother bought. Some people bought Beatles albums in stereo before that, but mono was king. Part of the discrepancy was that stereo albums cost a dollar more than mono initially, and a dollar was big money back then. Some time or another, I don't remember when, maybe 1968, mono and stereo prices became the same, and then everybody jumped on the stereo bandwagon. "Get Back" was the first stereo 45 that I bought. It was amazing to have a stereo 45.

[Cal Blacksmith]

I would say that there was a discussion about this subject back in the 20s when theater organs were being installed. The goal was to have a mono sound source but the pipes took up so much room in a large installation that by necessity, stereo came into play. It was considered disturbing that one sound would come out of one side of the room while another would come out of the other side. Not really related to audio of today but it is interesting just the same.

[fini]

I'm trying to date these speakers. The date codes on the woofers and tweeters indicate either 1959 or 1969. The styling looks more like '59 to me. The labels on the back have no zip code, another clue ("Chicago 38"). Yeah, I'm certain. '59. They're model CN-100. 3-way, w/ a P12NF woofer.

[ZAKO]

The first stereophonic & surround sound was introduced with Walt Disney,s FANTASIA to the general public befor 1940.

[Allan Songer]

The first Stereo LP I bought was Bob Dylan's "John Wesley Harding" circa 1968.

[LarryC]

I have limited info, and know others will have much more: somewhere in the past, I picked up a 1956 TWO-track stereo reel-to-reel pre-recorded tape, Charles Munch/Boston Symphony's recording of the Berlioz Symphonie Fantistique,about as early as stereo appeared. FOUR-track pre-recorded R2R stereo recordings (which, unlike 2-track, you could turn the reels over to play the "other side") were available by 1960, and I'm certain stereo LPs were available by then, as good CD perf's from the late 1950's are available (R2R was practically dead before it started). Record companies issued both mono and stereo LPs of the same recording for several years after that.

Larry

[fini]

Mark,

These speakers use the P12NF woofers, a variation of a very popular guitar amp speaker. The "F" designation is for something Jensen called "Flexair," refering to the more flexible "accordion" style surround material. Apparently, the high frequencies are rolled off. Probably developed for use in these home speakers.

This gets me to wondering: Are most if not all guitar amp speakers single drivers?

[Klipschfoot]

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On 3/24/2004 10:00:13 AM fini wrote:

I'm trying to date these speakers.

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I don't think that is legal in most states.

[Parrot]

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On 3/24/2004 10:55:47 AM Klipschfoot wrote:

I don't think that is legal in most states.

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Yeah, but Fini is in California and they do things a little differently out there.

[fini]

I think I'm more attracted to the one on the left. I've even named him: Smitty Werben Jaegerman Jensen. He was number one!

[ShapeShifter]

Some recorded history of stereophonic events:

Stereophonic Sound

1881 - Clement Adler at the Paris Electrical Exhibition put "a series of 80 telephone transmitters across the stage at the Paris Opera and connected them by wires to telephone receivers in a suite of four rooms" in a local hotel where visitors could pick up a receiver for each ear and listen to the live transmision, but no sound was recorded.

1916 - Harvey Fletcher joined the Research Division of Western Electric Engineering Dept to work with Irving Crandall on hearing and speech, was director of acoustic research at Bell Labs 1927-49, built the Western Electric Model 2A hearing aid and a binaural headset in the 1920's, published the widely-read book Speech and Hearing in 1929 that analyzed the characteristics of sound. Fletcher would lead much of the research on binaural, or what later would be called "stereophonic" sound recording, at Bell Labs.

1931 - In December, Harvey Fletcher and Arthur C. Keller of Bell Labs with Leopold Stokowski used improved electrical recording equipment in the Academy of Music in Philadelphia to record and transmit monaural and binarual sound. Also in December, Alan Dower Blumlein filed a patent application in Britain for stereo recording.

1932 - March 12 Stokowski recorded his first stereo disc, Scriabin's "Poem of Fire" for Bell Labs in Philadelphia using vinyl rather than shellac, with the dynamic range extended to 60 db and response to 10,000 hz. The master disc was gold-coated by vacuum-sputtering. At first, for the Scriabin recording March 12, Bell had recorded two separate grooves for each channel, but later Arthur Keller in the patent #2,114,471 described the 45/45 method in one groove. The patent application was not filed until 1936 because Bell did not see an immediate commercial application of the method. Keller was unaware of Blumlein until the 1950s when his 45/45 system was re-invented by Westrex.

Stokowski on cover of Time Nov. 18, 1940, after recording Fantasia

1933 - April 27 Stereoscopic sound was transmitted to the National Academy of Sciences and many invited guests at Constitution Hall, Washington. Transmission was over wire lines from the Academy of Music in Philadelphia and three channels were used with microphones respectively at left, center and right of the orchestra stage and loud speakers in similar positions in Constitution Hall. The orchestra in Philadelphia was conducted by Alexander Smallens while Dr. Stokowski in Washington manipulated the controls so as to enhance the music in accordance with his own views.

1934 - Jan. 19 Alan Blumlein recorded Thomas Beecham at the Abbey Road Studio in stereo, conducting Mozart's "Jupiter Symphony" with a vertical-lateral technique using a stylus to vibrated in 2 directions, first recording one channel of sound in a groove laterally and then recording another channel of sound in the same groove vertically.

1940 - Harvey Fletcher and Stokowski made another stereophonic demonstration at Carnegie Hall April 9 and 10, with recorded stereo music from a three-channel system using sound on film with a frequency range of 30 to 15,000 cps and a volume range of 120 decibels. A 4th track was used as a loudness playback control track. The New York Times reported April 10 "Sound Waves 'Rock' Carnegie Hall As Enhanced Music' Is Played" and "The loudest sounds ever created crashed and echoed through venerable Carnegie Hall last night as a specially invited audience listened, spellbound, and at times not a little terrified."

1945 - Decca's early stereo LPs used a Teldec/Neumann Stereo cutter to record one channel lateral and another vertical, each on the opposite wall of a groove; but the dual tracks could not be reproduced with heavy mono pickups on the turntables and record players.

1949 - General Motors asked Magnecord to make a stereo tape recorder to improve spatial analysis of automobile noise. Magnecord modified its PT-6 tape recorder that had been introduced in May 1948 at the National Association of Broadcasters show. This modified recorder was introduced at the 1949 Audio Fair in New York with two record/play heads 1.5 inches apart, each with its own amplifier.

1951 - Emory Cook made the first stereo recordings of railroad trains in the field for the LP titled "Rail Dynamics" demonstrated at the 1951 Audio Fair in New York.

1953 - The Robe had 4-track stereo sound; was the first CinemaScope film and led the release of 33 stereo films in 1953, but stereo failed to transform motion picture soundtracks and would not reappear until 1975 with Dolby optical stereo sound. The Robe used directional sound, footsteps of Roman Legions marching from right to left, thunder and wind and rain of the crucifixion scene. The first time off-screen voices are actually heard off-screen, when voices warn Marcellus of his ship departure to Judea. Only Fox and Todd-AO would record dialogue with directional sound. All other studios provided some music in stereo for magnetic soundtracks, but recorded voices and sound effects in mono.

Armstrong from Houck Collection

1954 - Murray Crosby demonstrated FM stereo multiplex system in his Syosset, Long Island, lab to 16 executives of RCA; his demo was the result of a request by Leopold Stokowski to David Sarnoff; this was the first time the executives heard stereo and it led to the issue of RCA prerecorded open-reel stereo tapes; No. 1 tape that sold for $18.95 was "Also Sprach Zarathustra" by Richard Strauss, recorded by the Chicago Symphony Orchestra under Fritz Reiner using 2-track magnetic tape at 30 ips, 2 Neumann M-50 omnidirectinal mics 12 ft. high and placed 24 ft. apart with the orchestra in between.

1954 - Feb. 21, RCA made its first commercial stereo recording of a symphony when Jack Pfieffer and Leslie Chase went to Symphony Hall in Boston to record the "Damnation of Faust" by Berlioz with a RCA RT-11 two-channel tape recorder and two Neuman U-47 mics. This same month, EMI in London made "Stereosonic" recordings at its Abbey Road studio that were announced to the public in April 1955.

1954 - In May, Decca made its first stereo recordings at the Kingsway Hall studio for classical music recording in London with the "Decca tree" designed by Roy Wallace, using 3 directional cardioid-pattern Neuman KM-56 condensor mics suspended eleven feet above and slightly behind the conductor's platform on a cross-bar, pointed 30 degrees down to the orchestra and clustered tightly together to exclude reflected sounds from the sides and rear. The mixed signal was recorded on an Ampex 350-2 recorder at 15 ips.

1957 - Sept. 5 Westrex gave a private demonstration of its 45-45 stereo disc recording system. Shortly after, Haddy demonstrated the Decca V-L system to RCA. The Westrex system was publicly demonstrated at annual convention of the Audio Engineering Society in New York Oct. 11. The Recording Industry Association of America (RIAA) adopted the Westrex system and the "full stereo record" (not compatible with mono records) with stylus tip of 0.7-1.0 mil radius and vertical force of 6 grams as the industry standard on March 25, 1958. High Fidelity components began to appear.

1958 - Oct. 18 the BBC began regular stereo broadcasts Saturday mornings

1960 - The dual bilateral light valve was developed, that allowed each side of an optical motion picture soundtrack to be modulated independently, allowing 2-channel stereo sound. The movie industry adopted stereo optical sound quickly, and it was the movie industry that pushed multichannel sound into home market.

1961 - April 19 FCC ruled in favor of the GE/Zenith stereo FM system rather than Crosby matrix system. Murray G. Crosby had worked for Edwin Armstrong and Crosby held 150 patents and wanted the FCC to adopt his stereo FM system that utilized the matrix principle (that of transmitting the sum signal L+R as the main channel modulation and the difference signal L-R as a subcarrier) rather than suppressed AM subcarrier principle (by Zenith & GE). WEFM in Chicago and WGFM in Schenectady began stereo FM broadcasting June 1.

Headphones from Koss Museum

1962 - 87 FM radio stations existed in 29 states and Canada, including 2 FM stations in New York City; John Koss was starting to promote his idea of individual stereo headphone listening, but few audio components had headphone jacks.

1968 - Sheffield Lab made the first modern direct disc recording, "Lincoln Mayorga and Distinguished Colleagues Volume One." No tape recorder was used and only a limited number of records was manufactured. Only one single point stereo tube mic designed by Sheffield Lab was used.

1970 - Quadraphonic sound used 4-channels, but produced an "antisocial" stereo sound that allowed only one listener to hear it correctly in the stereo seat, or "sweet spot." There was no center channel. Although it failed, the technology had a lasting effect, especially the JVC CD-4 system that recorded 4 discrete channels in the grooves of an LP record by extending the bandwidth to 50 khz. Stereo systems developed better cutting and pressing technology, better pickups with wider bandwidth and reduced tracking distortion.

[Clipped and Shorn]

"When was stereophonic sound introduced to the general public, ..."

1954

 

[Guy Landau]

Fini,

Nice looking side tables.

[fini]

I hear you, Guy! They'd look sweet with some big ol' coffee mug rings!

[HornEd]

Ah, I looked up an early stereo recording from my bachelor pad days seemingly eons ago. Other Worlds, Other Sounds by Juan Garcia Esquivel was recorded in stereo in 1958 by RCA Victor it was nominated for a Grammy. Esquivel recorded his first U.S. album a year earlier in 1957 a mono job. Esquivels Strings of Flame featuring a 50+ piece orchestra came along year or so later and it set the standard for crass orchestral liberties with the two channel format but it definitely was fun well at least for the first dozen plays.

If memory serves, the first Kingston Trio LP was mono in about 58 with a stereo version of the same album available a year later. I bought the mono album because I was overseas in the Army and they were from my own backyard (Stanford University) shortly after I bought it,.. the PX had the same album in stereo which I also purchased.

The first fake stereo recording was one with the original Dave Brubeck Trio (another hometown S.F. guy) originally recorded in the mid-50s (Paul Desmond was incredible!) and then later tricked up to be stereo I had bought the original mono as part of my early jazz collection and was really turned off by the intrusive fake stereo add-ons. I heard a rumor that the original album in unvarnished mono has been produced and will be available on CD.

So, friend fini, hi-fi started for me in about 1955 and it was all monaural and it was probably 1958 before I bought my first stereo album while working in the American Hospital near the Arch of Triumph in Paris, France. That was the scene of my first outrageous stereo system. I was living in an old stone building and found two recesses in the thick stone walls with thick oak fronts even with the wall surface. The stone was plastered and the whole thing covered with layers of wall paper. .. rendering the wall cabinets as unusable. So, with some careful carpentry and some new wall paper, and some nifty speakers, the empty stone recesses became speaker cabinets. People who came into the room were blown away by the sound that seemed to be coming out of a flat wall.

No doubt about it, this whole two-channel and up thing has been a trip! HornEd

[dubai2000]

Wes,

thanks for the interesting read....one more document for my files .

Wolfram

[TBrennan]

Fini---All the guitar amps I've seen used single drivers. Now this is weird; many bass players are using 2-ways with horn tweeters.

Now why a bassist would think he needs tweeters when guitarists don't is a mystery of life. I think it must be that many bassists deep-down resent the simple, rythmatic role of the electric bass and overcompensate by playing too many notes and wanting to expand the range of instrument higher. Stanley Clarke was the Typhoid Mary of this infection.

What these fellas really need to do is take up the piano.