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  2. JBL - Wikipedia

    en.wikipedia.org/wiki/JBL

    JBL is an American audio equipment manufacturer headquartered in Los Angeles, California. [1] The company was founded in 1946 by James Bullough Lansing , an American audio engineer and loudspeaker designer.

  3. Category:JBL - Wikipedia

    en.wikipedia.org/wiki/Category:JBL

    This category is to group together people and products associated with JBL, a US audio electronics company founded in 1946 by James Bullough Lansing. Their primary products are loudspeakers and associated electronics .

  4. Public address system - Wikipedia

    en.wikipedia.org/wiki/Public_address_system

    Public address systems consist of input sources (microphones, sound playback devices, etc.), amplifiers, control and monitoring equipment (e.g., LED indicator lights, VU meters, headphones), and loudspeakers. Usual input include microphones for speech or singing, direct inputs from musical instruments, and a recorded sound playback device. In ...

  5. Dell XPS - Wikipedia

    en.wikipedia.org/wiki/Dell_XPS

    The screen resolution is either 1366×768 or 1920×1080. The NVIDIA graphics card used in Dell 15 (L501x) turns off or on automatically for specific applications demanding dedicated graphics. It has integrated JBL 2.1 Speakers + Waves MaxxAudio enhancement. It is equipped with a 2 MP webcam. It has two USB 3.0 ports and one eSATAp port.

  6. Subwoofer - Wikipedia

    en.wikipedia.org/wiki/Subwoofer

    From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...