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| 1.
For a phonographic playback device to be considered a turntable, it must play discs placed on a rotating platter. In spite of being just a piece of solid material, the platter strongly determines the overall quality of sound reproduction by the turntable. Which of the following is true? |
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| 2.
In order to make the platter rotate and play the record, a motor is needed. The components transferring the torque from the motor to the platter are called the turntable's drive mechanism - which of the following is NOT a turntable drive type? |
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| 3.
Now that we have a smoothly rotating platter with a vinyl record on it, we need a way to read the groove and reproduce the sound. The part coming into contact with the record is the stylus whose tip is usually made of a small diamond. In cheap turntables, what material often replaced the diamond? |
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| 4.
In order to give the best sound, the stylus needs to be weighed down so it will exert a consistent, well-defined force on the record. What is the typical range of effective pickup weights used on a middle-class or high-end turntable? |
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| 5.
We now have a stylus vibrating precisely at the frequencies of the recorded sounds. To amplify this sound, we now need to convert that vibration into an electric current. This is the job of the tone arm's cartridge - which of the following cartridge types is generally considered inferior in sound quality, with good reasons? |
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| 6.
Before we leave the pickup area, one last question here: On a stereo record, the two channels are each recorded on one wall of the record's groove, resulting in a diagonal stylus movement (45° from horizontal) for each channel's signal. Why has this seemingly unusual arrangement been chosen? |
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| 7.
Finally, our sound signal has been read from the record and converted to an electrical signal. We now need to apply the RIAA equalizer curve to undo an intentional distortion applied during the recording. Which two, otherwise contradictory features of a recording does this process make more compatible with each other? |
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| 8.
Everyone who has ever played a vinyl record knows that it is recorded from edge to the center, but this has not always been so. In fact, several early long-play records of classical music were cut the opposite way, starting from the inside and moving outward. Why was this done? |
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| 9.
The exposed position of a turntable record and its pick-up stylus are unique among all common sound reproduction devices. This exposed status often leads to damage of the groove - a "broken record" results in which a groove is skipped, or worse, repeats forever. How can you, with some skill, still play such a record (at a slightly reduced quality), in order to digitize the affected song? |
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| 10.
Finally, let's move away from a traditional turntable: Is it possible to digitize a vinyl record without spinning it on a platter and without any mechanical means to pick up the sound signal from the groove? |
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