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2. Tweeter - Wikipedia

   en.wikipedia.org/wiki/Tweeter

   A piezo (or piezo-electric) tweeter contains a piezoelectric crystal coupled to a mechanical diaphragm. An audio signal is applied to the crystal, which responds by flexing in proportion to the voltage applied across the crystal's surfaces, thus converting electrical energy into mechanical.

3. Keyboard amplifier - Wikipedia

   en.wikipedia.org/wiki/Keyboard_amplifier

   [7] Roland's KC-150 is delivers 65 watts through a 12" speaker and piezo tweeter. It has "4-channel capability, 2-band EQ, XLR mic input, and RCA stereo auxiliary input." [8] Roland's KC-350 delivers 120 watts through a 12" speaker and horn tweeter. It has "4-channel operation, 3-band EQ, XLR mic input, output select switch, and shape switch ...

4. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   A piezoelectric buzzer. The white ceramic piezoelectric material can be seen fixed to a metal diaphragm. Piezoelectric speakers are frequently used as beepers in watches and other electronic devices, and are sometimes used as tweeters in less-expensive speaker systems, such as computer speakers and portable radios. Piezoelectric speakers have ...

5. Super tweeter - Wikipedia

   en.wikipedia.org/wiki/Super_tweeter

   A super tweeter is a speaker driver intended to produce ultra high frequencies in a multi-driver loudspeaker system. Its purpose is to recreate a more realistic sound field, often characterized as "airy-ness". Super tweeters are sometimes found in high fidelity speaker systems and sometimes even in home theater systems.

6. Which foods are considered 'healthy?' FDA issues new label ...

   www.aol.com/news/foods-considered-healthy-fda...

   "We know food labeling can be a powerful tool for change," James Jones, the FDA's deputy commissioner for human foods, said in a news conference. The goal, he said, is to "help consumers find ...

7. Piezoelectric speaker - Wikipedia

   en.wikipedia.org/wiki/Piezoelectric_speaker

   A piezoelectric speaker (also known as a piezo bender due to its mode of operation, and sometimes colloquially called a "piezo", buzzer, crystal loudspeaker or beep speaker) is a loudspeaker that uses the piezoelectric effect for generating sound. The initial mechanical motion is created by applying a voltage to a piezoelectric material, and ...