With hearing AIDS, which my father wore for 20 years, he generally functioned well in quiet Settings at close range from the speaker.

我的父亲带了20多年的助听器，通常在安静环境中且离说话者距离较近的时候，他可以很好地交流。

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Sometimes a lot - for instance, you might see an impedance result of anywhere from one to as much as 50 ohms from a particular speaker design within it's normal operating frequency range.

有时这种变化的幅度会非常大，例如，你可能会观察到一个扬声器在普通的工作频率范围内其阻抗可能是从1欧姆到50欧姆之间的任何一个数值。

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Application of two 18-inch speakers, an advanced long-range amplitude magnetic neodymium speaker design, with a very light weight and high power output.

应用两只18寸喇叭，先进的长距振幅钕磁扬声器设计，具有很轻的重量和大功率的输出。

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The LightSpeaker, which comes complete with a dimmable LED bulb and full-range speaker, fits 5- and 6-inch recessed light fixtures with a standard Edison socket.

ENGADGET: Klipsch LightSpeaker makes whole home audio as simple as screwing in a light bulb (hands-on)

The latest edition to the company's line of solar powered speakers, Rukus XL features eight full-range speaker drivers that produce stereo-quality sound and one-touch device pairing, providing the ultimate music-listening experience.

ENGADGET: Eton adds two more solar-powered Bluetooth sound systems to its Rukus lineup (hands-on)

The Fidelio Portable Speaker range merges high-quality sound with superior style.

ENGADGET: Philips showcases its 2013 Fidelio audio lineup at CES, we go eyes-on