Powersoft has released new plug-ins supporting Mezzo Series and its non-DSP install dedicated amplifier platforms ranges for the Q-SYS and Crestron control ecosystems. These free-to-download plug-ins allow for
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Neutrik, supplier of connectivity solutions for audio, video, and data, has announced the debut of the NPS-30W PoE injector. The NPS-30W is the world’s first
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Audinate, developer of the Dante AV networking solution, has announced a new Authorized Implementer Program for manufacturers seeking to fast-track the development
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Audinate, developer of the Dante AV networking technology has announced the addition of two new models to the line of Dante AVIO audio adapters, offering USB-C and Bluetooth connectivity
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Adamson Systems Engineering has officially launched its CS-Series, bringing performance of Adamson’s sub-compact S-Series loudspeakers into the network with onboard amplification and DSP, plus Milan-ready AVB connectivity.
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AVIXA, the Audiovisual and Integrated Experience Association, is pleased to announce the release of its standard, Rack Design for Audiovisual (AV) Systems (F502.02:2020), which outlines the requirements
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Ravenna was literally supposed to be the death of the Dante digital audio transport system, as italian poet Dante Alighieri died in the city of Ravenna. Although Ravenna has done well in the broadcast
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In general, two-channel power amplifiers for professional use default to stereo mode. That is, each amplifier channel receives a signal from its input connector and its volume is controlled by... Read more
Although it not specific to sound, we include this document with some basic electricity formulas. They can be found in any electricity textbook, but we have added them to the DoPA Library for reference.
Ohm's law
The most basic formulas derive from Ohm's law, which specifies that the electric current between two points is proportional to the potential difference (voltage) between them and inversely proportional to the resistance between them. The formula is:
V
I =
———
Z
where I is the current (intensity) in amps and V is the voltage in volts. Since we use alternating current in audio, we have replaced resistance with impedance (Z, and this could also be resistance R), measured in ohms. Clearing Z and V we have these other two formulas:
This article will explain loop-though connections and "y-cables" for analog audio signals.
To obtain one or more copies of a signal (for example, to distribute the signal from a mixer to various self-powered speakers or power amplifiers) we use parallel connections. To do this we simply connect each terminal (pin) of the connectors in parallel. That is, 1 to 1, 2 to 2 and 3 to 3 (or tip to tip, ring to ring and sleeve to sleeve in a TRS connector). When we split a signal in two in this way, we refer to a "Y-cable" or "Y" connection, since the division of a signal in two looks like letter "y". Contrary to what it may seem, a y-cable is not a technically incorrect solution, but a correct way of splitting the audio signal. In fact, when a self-powered loudspeaker system or one channel of... Read more
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