Audio Impedance Matching Circuits

Impedance Matching of Audio Components

http://hyperphysics.phy-astr.gsu.edu/hbase/Audio/imped.html

Impedance Matching. In the early days of high fidelity music systems, it was crucial to pay attention to the impedance matching of devices since loudspeakers were driven by output transformers and the input power of microphones to preamps was something that had to be optimized. The integrated solid state circuits of modern amplifiers have largely removed that …

matching input and output impedance in an audio circuit

https://electronics.stackexchange.com/questions/73541/matching-input-and-output-impedance-in-an-audio-circuit

We typically don't match impedances in audio circuits. For example, the output impedance of an audio preamp is typically relatively low whilst the input impedance of an audio power amp is typically relatively high.

Impedance Matching - Crystal radio

https://www.crystalradio.net/soundpowered/matching/index.shtml

How important is impedance matching in audio applications ...

https://electronics.stackexchange.com/questions/6846/how-important-is-impedance-matching-in-audio-applications

Impedance matching is not used in modern audio electronics. A mic output might be around 600 Ω, while mic preamp inputs are 1 kΩ or more. A line output will be something like 100 Ω, while a line input is more like 10 kΩ. A loudspeaker amplifier will be less than 0.5 Ω, while loudspeakers are more like 4 Ω.

Impedence matching in Audio - All About Circuits

https://forum.allaboutcircuits.com/threads/impedence-matching-in-audio.45184/

Back to Basics: Impedance Matching (Part 1) | Electronic ...

https://www.electronicdesign.com/technologies/communications/article/21796367/back-to-basics-impedance-matching-part-1

Resonance and Impedance Matching

http://bwrcs.eecs.berkeley.edu/Classes/icdesign/ee142_f10/Lectures/ProfNiknejad_chap7.pdf