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Chapter 5: Understanding Impedance In Audio Transformers
http://www.lundahl.se/wp-content/uploads/datasheets/PSW_WhitePaper_Download_Chapter_5.pdf
The term “impedance” is the backbone of all things audio, fundamental to understanding how an AC circuit be-haves in respect to its input source and output load. For those new to electrical theory, all audio signals are AC, or alternating current. This includes the power amplifiers that drive loudspeakers, signal level devices coupled to
How To Add A Resistor To A Speaker To Change …
https://soundcertified.com/how-to-add-resistor-to-speaker-to-change-match-impedance/
You can change speaker impedance with resistors for two situations: To use a lower impedance speaker than you normally could with an amplifier or stereo. To use a higher impedance speaker where a lower one is needed (for example: speaker crossover designed only for a certain Ohm rating speaker). Of the two cases, #2 is a lot less common.
Resistor from speaker neg to ground to raise impedance ...
https://www.diyaudio.com/community/threads/resistor-from-speaker-neg-to-ground-to-raise-impedance.378837/
That's plain wrong. The choice of a driver (and that includes also the choice between 4 and 8 Ohm impedance) depends on the application. For domestic use with a "normal" solid state amp, a 4 Ohm bass driver is perfectly acceptable, with the added bonus of higher SPL at given voltage level. My Rotel amp is perfectly happy with a 3-4 Ohm load.
LearnEMC - Introduction to Common Impedance Coupling
https://learnemc.com/common-impedance-coupling
Common impedance coupling is independent of frequency except to the extent that the shared impedance is frequency dependent. At low frequencies (kHz and lower), the impedance of the wire would be independent of the frequency and so would the level of crosstalk. At high frequencies (MHz and higher), the resistance of the wire would be ...
Is there any standard for the input impedance of an audio ...
https://electronics.stackexchange.com/questions/342975/is-there-any-standard-for-the-input-impedance-of-an-audio-amplifier
There is a sortof standard for a certain class of professional audio gear. This standard is 600 Ω. All "line level" audio in such a setup is expected to drive 600 Ω. This is also the impedance of the microphones. However, many many amps don't follow this.
Impedance Level - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/impedance-level
Generally, but not invariably, units having DIN type interconnections, of the styles shown in Fig. 3.1, will conform to the DIN signal and impedance level convention, while those having ‘phono’ plug/socket outputs, of the form shown in Fig. 3.2 will not. In this case, the permissible minimum load impedance will be within the range 600 ohms to 10 000 ohms, and the mean output signal …
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