| 1. | The central controller system vibrated the electromagnet like an audio-speaker voice coil.
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| 2. | Rotary voice coils are widely employed in devices such as disk drives.
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| 3. | A rotary voice coil is a rotational version of a solenoid.
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| 4. | The voice coil and the magnet form a linear electric motor.
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| 5. | Inaccurate reproduction of the voice coil signal results in acoustical distortion.
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| 6. | Copper wire provides an easily manufactured, general purpose voice coil, at a reasonable cost.
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| 7. | They block the power amplifier from taking maximum control over the voice coil motion.
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| 8. | The voice coil is attached by adhesives to the back of the speaker cone.
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| 9. | Level shifts caused by resistive heating of the voice coil are termed power compression.
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| 10. | A second pole piece in turn surrounds the voice coil.
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