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Headphone out vs. line out on my TV, impedance problem?
https://hydrogenaud.io/index.php?topic=80268.0#:~:text=The%20line%20input%20to%20your%20amplifier%20is%20probably,a%20source%20impedance%20of%20a%20couple%20of%20ohms.
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.
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
Generally the input impedance to an audio amplifier is 'high'. That is, high enough to be driven comfortably by any audio source output. But of course, without a proper specification, you are taking something of a gamble. 10k to 100k is the usual sort of range we find, though some can be less.
Measuring input impedance and calculating output …
http://www.sengpielaudio.com/calculator-InputOutputImpedance.htm
Then the output voltage at half power is P = 50 W = V2 / R . Loudspeaker impedance = 8 ohms. V = √ ( P × R) = √ (50 × 8) = 20 volts. (You can also use 10 V.) Give a sine voltage of 1 kHz to the amplifier input, until we get 20 volts at the output.
audio - understanding input impedance theory - Electrical ...
https://electronics.stackexchange.com/questions/506598/understanding-input-impedance-theory
For audio and pretty much up to about a MHz, output impedances tend to be no more than one-tenth the input impedance of the device it feeds. Typcally a poweramp will have an output impedance sub 0.5 ohm and, as a comparison a speaker is 4 ohms or more. Share. Follow this answer to receive notifications.
Understanding Impedance - Sound on Sound
https://www.soundonsound.com/techniques/understanding-impedance
The DIN specification states that the current source should give an output voltage of 1mV per 1kΩ of input impedance. Typically, the input impedance of a DIN-compatible unit would be 100kΩ, and so would see an input signal voltage of about 100mV. Hi-fi equipment with phono connectors usually employs the voltage matching concept, with very low output impedance and much …
Headphone out vs. line out on my TV, impedance problem?
https://hydrogenaud.io/index.php?topic=80268.0
The line input to your amplifier is probably 10k ohms or more. The line output from your TV is probably 1k ohms or less. Line-out to line-in should always work (unless you're mixing pro & home equipment). Headphones are typically 32 ohms or more. The headphone output probably has a source impedance of a couple of ohms.
Input Impedance a Problem? | Audio Science Review …
https://www.audiosciencereview.com/forum/index.php?threads/input-impedance-a-problem.24891/
The ratio of output/input impedance should be at least 1:10. If it's less than, it can and will have a negative effect on the sound (dull, lifeless, lacking treble clarity and bass). The ratio between the Sys, 5K, and Hafler, 22K, is roughly 1:4.
Line level - Wikipedia
https://en.wikipedia.org/wiki/Line_level
It is intended by designers that the line out of one device be connected to the line input of another. Line inputs are designed to accept voltage levels in the range provided by line outputs. Impedances, on the other hand, are deliberately not matched from output to input. The impedance of a line input is typically around 10 kΩ. When driven by a line output's usual low impedance of …
Please help me understand audio interface impedance ...
https://gearspace.com/board/newbie-audio-engineering-production-question-zone/626423-please-help-me-understand-audio-interface-impedance.html
Common output impedance for microphones is around 150ohm, and the common input impedance for microphone preamp is usually above 1k. Also common output impedance for line level gear should be as low as possible <100ohms but sometimes it can be much higher than that. and ususally the input impedance is 10k.
Connect TV audio output to old stereo amp | Electronics …
https://www.electronicspoint.com/forums/threads/connect-tv-audio-output-to-old-stereo-amp.237234/
Does it make sense to attempt to connect the TV's audio output to the. Technics amp to get better sound quality. Sony TV Audio out: 500mVrms (100% modulation) More than 1 Vrms at max volume setting. Impedance 47k ohms. Technics amp input: Phono 2.5mV 47k ohm. Aux 150mV 27k ohm.
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