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Cable impedance - ePanorama.net | Audio | Video
https://www.epanorama.net/documents/wiring/cable_impedance.html
Z = (87 / sqrt ( Er + 1.41 )) * ln ( (5.98*h)/ (0.8*w + t)) Where: Er = dielectric constant (4.8 for typical fiberglass board) h = height of the dielectric (fiberglass board thickness between trace nad ground plane) t = thickness of the copper material in microstrip. w …
What is Impedance in Audio? Input and Output …
https://virtuosocentral.com/what-is-impedance-in-audio/
In audio devices, impedance is the measure of the resistance of a circuit to alternating current (audio signal). It’s measured in Ohms. The “Z” symbol represents impedance. All audio equipment that receives an input and has an output will have impedance measurements, namely input, and output impedances. More on that later.
Cable Impedance - renardson-audio.com
http://www.renardson-audio.com/impedance.html
The characteristic impedance of a transmission line is given by Z o = square root of ( L / C ), where L is inductance per unit length, and C is capacitance per unit length. This is the input impedance of either an infinite length of the cable, or more practically of a finite length terminated by an impedance equal to the characteristic impedance. In the following I mostly ignore …
Speaker Audio System Cables - West Penn Wire
https://www.westpennwire.com/pdf/16774%20-%20Speaker%20Audio%20Guide.pdf
Low Impedance Systems output Impedance is low, the current must be high in order to get a given amount of power to the speaker. The lower the resistance of the cable, the more power gets to the speaker. High Impedance- Distributed Loudspeaker System- Constant Voltage System: Impedance of 4 and 8Ω are most common in amplifier outputs.
Audio Cables: Cables – Connectors – Isolation Transformers ...
https://education.lenardaudio.com/en/11_cable.html
Solid-state technology is capable of approx 8V RMS (+20dBm) and with low output impedance of approx Z 10-200ohm. At low impedance, the cable capacitance has minimal effect. Impedance matching between equipment is rarely needed for domestic application.
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