Technology

• Audio Formats - In fifties 45 players replaced 78 players. Hi fidelity sound was developed New sound systems were developed. First high fidelity which later would be replaced with stereophonic sound.

Birth of the 45 R.P.M.

• The Jukebox

The History of the Jukebox

• Phonograph Players - After World War I Emile Berliner's phonograph record won over Edison's wax cylinders. Records were recorded in the 78 rpm format until the late 40s, when Columbia introduced  33 rpm record.  This record had better sound, ten times the amount of recording space and smaller grooves. The smaller needle needed to play the 33 rpm record gave a clearer  and wider spectrum of sounds. In early 1949 RCA   introduced the 45 rpm record. The record was much smaller then the 78 rpm, but contained the same amount of recording space, while offering better sound. Portable record players were developed that would play up to ten 45 rpm records on a spindle These phonograph players were ideal for teen parties and dances. By July 1954, most companies promotional records to disc jockeys were in the 45 rpm format.

Record Formats -33 RPM, 45 RPM, and 78 RPM
Turntable History

• Transistor radio -  came down in price, became smaller, more powerful and with better sound. Earphones were regularly included with the purchase of a radios.

• Television - parents began replacing their first televisions with newer models and teens were often given the old one. Television began to lose audience in the early evening hours and began programming to the teens and young adults.To convert these viewers they began programming shows  that featured a younger sound that featured rhythm and blues, group doo-wop and were hosted by "personality deejays."
  
• Tape recorders -  magnetic tape invented 1935 was first used by Germany in World War II propaganda broadcasts. tape recording replaced old method of recording on on wire.. by 50s replaced 16 inch records as means of distributing network broadcast to affiliates.. better sound quality and less fragile.

Stereo equipment and technology has come along way since the 1950’s. Bluetooth control is now on everything from cars, to planes, and even boats like Tiara Yachts for example, have surround sound audio.