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    Lectrosonics Introduces the DCHR Miniature Stereo Digital Receiver

    Lectrosonics is pleased to announce the introduction of the DCHR miniature stereo digital receiver, capable of stereo or mono operation from a single RF carrier with Lectrosonics... Read more

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    Extron 4K/60 HDMI audio De-Embedder now shipping

    Extron has announced the availability of the HAE 100 4K Plus audio de-embedder. The HAE 100 4K Plus extracts audio from a 4K HDMI source,... Read more

    ISE postponed to June 2021

    MUNICH 15 SEPTEMBER 2020: After a period of consultation with the industry and the impact of the ongoing pandemic, Integrated Systems Events announce that ISE, scheduled for 2-5 February, has been postponed and will... Read more

    QSC Announces New Q-SYS Core Processors

    QSC has launched two new audio, video, and control processors native to the Q-SYS Ecosystem – the smaller Q-SYS Core 8 Flex and Q-SYS Core Nano. Driven by the proliferation of networked endpoints and the expanding... Read more
  • Recent articles

    Parallel and series connections: description and calculations

    In this article we'll explain impedance calculations as simply as possible, as well as describe the different types of connection.... Read more

    Loudspeaker impedance

    Measured in ohms (symbol, Ω, upper case Greek letter omega), electrical impedance is defined as the opposition to the flow of alternating current by means of presenting an electrical load. In a loudspeaker, impedance varies with frequency, so manufacturers often publish "impedance curves" showing impedance with frequency for passive units. These curves give us... Read more

    Balanced and unbalanced connections

    There are two basic ways to carry an electrical audio signal.


    • The first one is unbalanced. The signal is carried on a two-conductor cable. Unbalanced signal connectors have two pins, such as the RCA (also called Phono and Cinch, commonly used by home hi-fi equipment) and the unbalanced 1/4" (used in musical instruments and semi-professional audio). Multi-pin connectors can also carry
    ... Read more
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