Why do amplifiers have a low output impedance?

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Low impedance, large ... speaker and amplifier manufacturers do all they can to maximize ... Speakers are usually 4-Ohms and most amplifiers have been ... - Read more

WHY DO WE NEED A PREAMP? ... low output impedance. ... CCS especially a tube CCS is that you need to have substantial voltage - Read more

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Why do amplifiers have a low output impedance? resources

High and Low Impedance Signals - Support - Whirlwind

The output from most electronic devices in an audio system will be of low impedance ... why a high impedance ... output of a mixer to several amplifiers, ...

Why is it desirable in an amplifier to have high input ...

... to have high input impedance and low output ... Why is it desirable in an amplifier to have high ... amplifiers that do have a fairly low input ...

Why Does an Op Amp Have a High Input Impedance and a Low ...

Op amps have high input impedance and low output impedance ... why op amps must have high-input impedances. ... source to the amplifier would also make the ...

Impedance matching - Wikipedia, the free encyclopedia

... a low output impedance, and to better match the amplifier's performance to the load impedance. Some tube amplifiers have output ... will do more damage to the ...

Impedance considerations for amplifiers - tpub.com

You have been shown that any amplifier is a current ... time you do something to a signal ... provides a high input impedance and a low output impedance.

Amplifiers - Learn about- Electronics

... but buffer amplifiers have a very high input impedance and a low output ... Amplifiers do not have ... The values of input and output impedance have a ...

SHOW MORE ....

Re: Why are transistor input and output impedances important?

... the book I'm reading implies that low output impedance ... have an amplifier with input and output ... amplifier with input and output impedances ...

ESP Amplifier Basics - How Audio Amps Work

This has nothing to do with its output impedance. An amplifier can have a very low output impedance, ... The exact mechanism as to how and why this happens will be ...

Understanding Impedance - Sound on Sound

... you need either quite a low output impedance or quite a long ... This is the reason why mic preamp specs ... many valve amplifiers have different output ...

Ultimate Headphone Guide Articles: What is a headphone ...

What is a headphone amp and why do I need one? ... when the amplifier's output impedance is much lower than the headphone ... which have output impedances in the few ...

AES E-Library ยป Why Do Tube Amplifiers Have Fat Sound ...

... output impedance of the amplifier, ... Why Do Tube Amplifiers Have Fat Sound while ... tube amplifiers selectively limit low frequency music signal and ...

Why is high input impedance good? - Electrical Engineering ...

That's why vacuum tube amplifiers use output transformers to match the ... mat have an output impedance of 10's ... That is a relative low output impedance to a ...

An amplifier is characterized by its voltage gain, input ...

Output impedance. We have just calculated ... Why do we need the input impedance? ... (The drain voltage is not too low.) Therefore, the common gate amplifier just ...

Why do tube stereo amplifiers sound so much warmer than ...

Why do tube stereo amplifiers sound so much warmer than digital ... transistor-based amplifiers have a low output impedance that reacts with the ...

Impedance, and how it affects audio equipment

Amplifier Impedance. It all starts with the amplifier. An amplifier will always have a defined (and measurable) output impedance, and this will vary depending on ...

A Survey Of Amplifier Types (TAS 217) | The Absolute Sound

In addition to low output power and high distortion, SET amplifiers have a very high output impedance as amplifiers go: ... Why do conventional measurements fail so ...

GUIDE TO CONSTANT-VOLTAGE SYSTEMS - Crown International

Here's why you must do this: If the load impedance is ... If you have a conventional amplifier with low ... measure the amplifier's output voltage at full ...

Amplifier Basics - Phase Relationships - Transistors and ...

Input/output phase relationships may ... This is we often referred to as input and output impedance. Practical amplifiers have input ... You want to have a low output ...

Speaker Impedance vs Power Output - Basic Car Audio ...

Speaker Impedance vs Power Output. ... Using low impedance ... to produce their maximum power output. Other amplifiers have a relatively high rail voltage and will ...

Measuring input impedance and calculating output impedance ...

"Measuring the output impedance by means of a burden": Suppose there is a 100 watt amplifier. Then the output voltage at half power is P = 50 W = V 2 / R.

Question about output impedance of output amplifier

low output impedance is required because ... Amplifiers have an output impedance of 0.04 ohms ... and I don't quite understand why do we model the amplifier as ...

Headphone & Amp Impedance Questions? Find the answers here!

Imagine the output stage of the amplifier like a pipe that ... If amps have near zero output impedance, ... Then why do we recommend low impedance ...

Electronics: Amplifier, amplifiers - AllExperts

Most RF amplifiers have 50 ohm input impedance, pretty low, and the same as the output impedance. ... Why an Amplifier should have large input impedance ...

Which Headphone Amplifier

Why Should You Have the Best Headphone ... is a high impedance headphone amplifier quite ... of 100 dB output do not need any external headphone ...

Amplifier-speaker matching impedance - diyAudio

Solid state power amplifier output impedance is ... amplifiers do not need this output transformer because it can be designed to have a very low output impedance.

Simple Voltage Regulators Part 2: Output Impedance

Because amplifier circuits tend to have a finite power supply rejection, meaning that they do not ... in general we want the regulator's output impedance low ...

Why is output impedance of op amp zero? - Physics Forums

Why is output impedance of op ... Op amps in general have very low output impedance ... Basically the output impedance is low because that's what amplifiers do ...

Amplifier loudspeaker ohm impedance output input voltage ...

... power amplifier to speakers There are no 4 ohm or 8 ... If speaker impedance is too low the weak ... speaker amplifiers have an output impedance of ...

Why do op-amps have a high input resistance? - All About ...

Why do op-amps have a high input resistance? ... I know that op-amps have a low output impedance ... any amplifier with negative feedback is going to have a higher ...

Speaker Impedance Matching - horror seek

What type of amplifier do you have? ... They have a low impedance output of around 8 ohms or 4 ohms. ... These amps have a high impedance output identified by a ...

Electronics Forum -> Amplifier Output Impedance

... but why do audio amplifiers have output impedances ... but why do audio amplifiers have output ... Solid state stuff has very low output impedance, ...