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Voltage source vs. current source amplifiers
https://forum.audiogon.com/discussions/voltage-source-vs-current-source-amplifiers#:~:text=A%20current%20source%20amp%20is%20an%20amplifier%20whose,is%20a%20bit%20different%20from%20voltage%20%28traditional%29%20feedback.
Voltage source vs. current source amplifiers
https://forum.audiogon.com/discussions/voltage-source-vs-current-source-amplifiers
A current source amp is an amplifier whose output impedance is significantly higher than that of the load and so makes constant current regardless of load. This is not a tube or solid state amp in particular; to achieve this, the amp must employ current feedback, which is a bit different from voltage (traditional) feedback.
Current Source Amplifiers and Sensitive / Full-Range Drivers
https://www.passdiy.com/pdf/cs-amps-speakers.pdf
We built an audio current source that delivered 1 amp of AC current per input volt to a maximum of 10 amps. This kind of amplifier is known as a power transconductance amplifier. Such circuits are fairly common in small chips which don’t generate the high current necessary to drive a …
Current Sources, Sinks and Mirrors in Audio
https://sound-au.com/ism.htm
For a current source of this type, the current is equal to ... I = (( V - 0.65 ) / R ) × hFE Where Iis the current, Vis the supply voltage, 0.65is the emitter-base voltage (typical), Ris the base resistor and hFEis the forward current gain of the transistor.
Current Source Amps and Sensitive/Full-Range Drivers ...
https://audioxpress.com/article/Current-Source-Amps-and-Sensitive-Full-Range-Drivers
Current Source Amps and Sensitive/Full-Range Drivers. December 8 2015, 17:31. In this fascinating article, published in audioXpress, October 2004, Nelson Pass investigates loudspeaker performance when driven by a current source amp. This extensive research shows what Pass and Kent English found with a variety of full-range sensitive loudspeaker drivers …
Constant Current Sources for Audio Amplifiers
https://nathaliebeimler.com/tech/audio_amplifier_current_source_comparison.html
Abstract. Constant current sources are basic building blocks of almost every analog audio …
The talk of current amplifier vs voltage in audio ...
https://electronics.stackexchange.com/questions/226401/the-talk-of-current-amplifier-vs-voltage-in-audio
So in theory current steering might be "better". The fact remains that it is impractical, a current output amplifier would apply the maximum voltage it can deliver (it would clip !!!) when no speaker is connected or the speaker's impedance becomes too high. Normal voltage output amplifiers only clip when overloaded when a large signal is applied.
The Alexander Current-Feedback Audio Power …
https://www.analog.com/media/en/technical-documentation/application-notes/58052492001115525484056221917334AN211.pdf
Title: The Alexander Current-Feedback Audio Power Amplifier Application Note (AN-211) Author: Analog Devices, Inc. Created Date: 0-01-01T00:00:00Z
Audio Amplifier Circuit
https://web.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/labs/Lab%201a%20-%202C%202007.pdf
speakers have a low impedance, typically 8-Ohm. Even for a low-power 0.5W audio amplifier, PIR 2 /2 requires that the amplifier must be able to source a peak AC current of around 350 mA with an 8-Ohm load. This is a lot more than a typical op-amp is designed to provide. For example, the LM358 and LF353 (two op-amps used in this lab) can source
Amazon.com: AudioSource Amp 300 High-Current Stereo ...
https://www.amazon.com/Amp-300-High-Current-Discontinued-Manufacturer/dp/B0006VBTDA
Amazon.com. Both powerful and versatile, the AudioSource Amp 300 high-current stereo power amplifier offers 150 watts RMS per channel x 2 or, in bridged mono mode, up to an amazing 470 watts x 1 (into 8-ohm speakers in both cases). Now you can scale your listening to match your budget: use either 1 amplifier or 2 for stereo sound or 5 or more in concert for full-blown home …
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