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  2. Dynaco - Wikipedia

    en.wikipedia.org/wiki/Dynaco

    Dynaco was an American hi-fi audio system manufacturer popular in the 1960s and 1970s for its wide range of affordable, yet high quality audio components. [1] Founded by David Hafler and Ed Laurent in Philadelphia, Pennsylvania in 1955, it's best known product was the ST-70 tube stereo amplifier. They also manufactured other tube and solid ...

  3. Damping factor - Wikipedia

    en.wikipedia.org/wiki/Damping_factor

    A lower damping factor helps to enhance the bass response of the loudspeaker by several decibels (where the impedance of the speaker would be at its maximum), which is useful if only a single speaker is used for the entire audio range. Therefore, some amplifiers, in particular vintage amplifiers from the 1950s, 1960s and 1970s, feature controls ...

  4. Naim Audio amplification - Wikipedia

    en.wikipedia.org/wiki/Naim_Audio_amplification

    The company's first amplifier, the NAP 160, is a two-channel power amplifier with an output of 60 watts per channel; the NAP 135, which is a one-channel amplifier based on the same design as the NAP 250 rated at 135 watts. A custom-built very fast and heavy-duty TO3 transistor device was employed in the original Naim amplifiers.

  5. NAD 3020 - Wikipedia

    en.wikipedia.org/wiki/NAD_3020

    NAD 3020 integrated amplifier. The NAD 3020 is a stereo integrated amplifier by NAD Electronics, considered to be one of the most important components in the history of high fidelity audio. [1] Launched in 1978, this highly affordable product delivered a good quality sound, which acquired a reputation as an audiophile amplifier of exceptional ...

  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 ...

  7. Amplifier - Wikipedia

    en.wikipedia.org/wiki/Amplifier

    Negative loop feedback has the intended effect of lowering the output impedance and thereby increasing electrical damping of loudspeaker motion at and near the resonance frequency of the speaker. When assessing rated amplifier power output, it is useful to consider the applied load, the signal type (e.g., speech or music), required power output ...

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