Comments on: Impedance and impedance matching https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/ All about electronics and circuit design Thu, 23 Apr 2026 12:41:17 +0000 hourly 1 http://wordpress.org/?v=3.9.14 By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1874351 Mon, 30 Mar 2026 13:46:21 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1874351 https://hackaday.com/2026/03/28/watch-electricity-slosh-visualizing-impedance-matching/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1871423 Fri, 20 Feb 2026 13:11:29 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1871423 600-ohm headphones are basically a legacy of telecom engineering that carried into pro audio and high-end hi-fi.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1871422 Fri, 20 Feb 2026 13:09:06 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1871422 Twin cable
122 ohms sounds about right. It’s similar to zip cord. Generally the farther apart the higher the impedance. 300 ohm is 0.5 inch; 450 ohm is about an inch and 600 ohm is more than that.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1848788 Mon, 17 Mar 2025 16:29:21 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1848788 What happens if you use 75 ohm coax instead of 50 ohm?
Every time a 50 and 75 Ohm Impedance mismatch occurs, about 5% of the signal is lost. These losses add up and can eventually degrade the signal to the point that it is unrecoverable or distorted.

https://cablesondemand.com/blog/whats-the-difference-between-50-ohm-and-75-ohm-coaxial-cable/#:~:text=Every%20time%20a%2050%20and,it%20is%20unrecoverable%20or%20distorted.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1844060 Sat, 18 Jan 2025 10:35:24 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1844060 for any modern amplifier. Modern solid state audio amplifiers have typically output impedance of a small fraction of ohm. The amplifier impedance rating is minimum impedance that the amplifier can handle.
Things are slightly different in some tube amplifier. For audio power amplifiers the output impedance almost never matches the speaker listed impedance.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1830401 Mon, 17 Jun 2024 20:37:50 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1830401 https://www.electronicdesign.com/technologies/analog/article/21167514/electronic-design-impedance-matching-basics-smith-charts

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1825928 Fri, 19 Apr 2024 15:14:57 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1825928 https://www.pasternack.com/t-calculator-coax-cutoff.aspx

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1825927 Fri, 19 Apr 2024 15:14:42 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1825927 https://en.wikipedia.org/wiki/Nominal_impedance

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1825926 Fri, 19 Apr 2024 15:14:25 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1825926 https://fi.farnell.com/twisted-pair-impedance-laskin

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2016/02/20/impedance-and-impedance-matching/comment-page-2/#comment-1825925 Fri, 19 Apr 2024 15:14:10 +0000 http://www.epanorama.net/newepa/?p=35205#comment-1825925 https://www.avnet.com/wps/portal/us/solutions/product-and-solutions-design/design-hub/calculators/twisted-pair-impedance/

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