2. amps-preamps
  3. 1160326436

Amplifiers: High Current? High Voltage?

I've seen alot of mention about current-based and voltage-based amplifiers, and I am confused. I thought all amplifiers recreated the wave form by varying voltage, and their interaction with the speaker (and the impedence characteristics between the two) dictate what current is drawn. I understand that the power supply of some amplifiers is less current restricted than others, but my (current) understanding also says that all amplifiers work by controlling voltage. Is there really such a thing as an amplifier that controls current rather than voltage?
peter_s
porziob
316 posts
 
They don`t control current. They should dump it into the load when needed. All amps can`t do this.
peter_s OP
1,335 posts
 
Then what is the best way to describe a non current restricted amp from a current restriced amp? High current vs. low current? I assume a non-current restricted amp is one that will put out nearly twice the power at 4 ohms than at 8 ohms.
porziob
316 posts
 
Ballsy amps, as far as current delivery is concerned, double down (they deliver 2x the current into 4 ohms that they deliver into 8 ohms & 4x the current into 2 ohms). For example 300W into 8 ohms, 600W into 4 ohms & 1200W into 2 ohms.
More to discover