Analog Tape Machine Alignment (1)

The Music Telegraph | Text 2019/10/23 [12:54]

Analog Tape Machine Alignment (1)

The Music Telegraph| 입력 : 2019/10/23 [12:54]

 

▲ Studer A80 analog tape machine

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Analog Tape Machine Alignment (1)

 

 

Equipments Needed:

- Head demagnetizer (Hand "D" Mag)

- Tape caddie containing alcohol, Q-tips, leader tape, splicing tape, paper tape, etc.

- 15" Alignment tape (1/4", 250 nW/m, 15 ips)

- Reel of 1/4" tape for record alignment

- Empty take up reel

- Studer A80 Professional 3 head analog audio tape recorder/reproducer

 

 

The analog tape machine is a transducer that can change electrical energy into magnetic and vice versa. It is designed to store the magnetic energy on tape. The type of tape used, the speed and operating level at which it is played and recorded all will determine the end quality of the audio output.

 

 

Even though we are fully into the digital era of audio processing, the use of the professional analog tape machine is stll worldwide. The overwhelming majority of our music and film history is in the analog tape format. There is no question that there will continue to be a need to maintain and operate analog tape machines well into the middle of this century.

 

 

All analog tape machines share an important characteristic regardless of their manufacturer, namely that tapes recorded on one machine can be played on any other (of the same track format and speed). This level of interchange-ability of tapes has required that a set of standardized reproduction and recording parameters be established and that all machines adhere to them. There are however many different parameters and, depending on the program material being recorded, they will vary from project to project or client to client. It is the job of the recording engineer to be able to align the studio's tape machines to any and all of the various combinations of parameters that have become universally accepted. 

 

 

To assist the engineer in aligning the reproduce electronics of a tape machine, a series of reproducer alignment tapes manufactured by Magnetic Reference Labs (MRL®) or Standard Tape Labs (STL®) are available for use in establishing a correct reproduce alignment. After the reproduce electronics have been properly aligned, the record electronics can then be aligned to the reproduce parameters, thereby assuring a proper alignment of both reproduce and record electronics. All professional studios own at least one set of alignment tapes, one for each format of tape and speed they intend to use.

 

 

▲ A Reproducer Alignment Tape    

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