The RESPONSE to frequencies over the entire AUDIO range has been charted, originally by Fletcher and Munson in 1933, with later revisions by other authors, as a set of curves showing the SOUND ...

If your blood pressure is too high, it puts extra strain on your blood vessels, heart and other organs, such as the brain, ...

Zenitel’s new and innovative IP Speakers feature a high-efficiency power amplifier that delivers a high sound pressure level.

Zenitel, a global pioneer in Unified Critical Communication solutions, proudly announces the launch of a new range of IP ...