More output power at higher loads and less power at lower loads. How it is done ?

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Virpz

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Joined 2011
#1
Hello

I was looking out at some amps that perform best at higher loads.

For example:

Hifimediy T1.

- It provides 100W on 8 Ohms ( 39V 5A ? ) and 50W at 4 Ohms.

I want to know what is done in order to provide more voltage and current to the speakers because it seems to foul Ohms law ?

Forgive me if it has already discused here but I tried to search the awsner here and on the web without success.


Thank You
 
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#4
I'd call it honesty. If the output chip used is current limited then an honest manufacturer will note that it has lower output into 4 ohms instead of letting the buyer assume that it can output twice as much in as into 8 ohms.

Many amps are in fact current limited without the manufacturer noting it.
 
#6
Btw, in the interest off being complete. It's current limited for the package. So if you for example used it in an active speaker with a 8 ohms tweeter and a 4 ohms woofer, the total current limit would still be 5A which would be

Woofer section ... 4 ohm ... 26.67V ... 88.9W
Tweeter section ... 8 ohm ... 26.67V ... 44.5W

That'd still keep you in the 5A limit.
 
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