how does current work in an amplifier?


I am trying understand the importance of current in an amplifier.

Quite often, I see that a speaker is said to work best with a high current amplifier.

What does this mean?

How does one determine if an amplifier is or is not high current?
dsper

Showing 1 response by mechans

I can't give you an in depth explanation. But if you look at the listed specifications for any given amp you should see the Amperes (Amps) that the Amplifier is capable of delivering. You should find a specification for both continuous and the peak number of amps the amp can produce.
The cut off, delineating a high current from an ordinary (non high current) amps has not been officially established AFAIK. But you can do your own informal survey of the big amps with reputations for handling demanding loads and following those specs as the amplifiers get progressively more powerful, to get a general idea of the range you are considering.
My own completely arbitrary idea of the lowest limit for a "high Current Amp" is about 20-30 amps continuous. but be aware their is alot more to it than this single figure.
I am prepared for the onslaught of scientific explanations to follow which will point out the critical importance of other specs to consider. Mine is a simplistic view.
BTW a really big amp will put out over 100amps non peak just so you know. Pay some attention to the slew rate as well which tells you how fast the amp can deliver that power when needed.