Tech Glossary
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Henry / Henries (Hy) - The measurement for inductance. Coils (low pass filters) are measured in millihenries as in 6.4 mHy (6.4 millihenries).
Hertz (Hz) - The unit of measurement for frequency. 1 Hz is equal to 1 cycle per second.
High Frequency Driver - A loudspeaker specifically designed to reproduce short, high frequency wavelengths. The driver typically has a small, lightweight diaphragm. Tweeter.
High Pass Filter - A network of elements used to attenuate all frequencies below a predetermined frequency. Frequencies above the cutoff point pass without any effect.
Highs - Term that refers to a set of speaker components used to reproduce frequencies above 500 Hz as in a set of separates. May also refer to tweeters that are used to reproduce frequencies usually above 2.5 kHz. Not bass.