Q about current..

[simonsez]

Okay...this is stupid newbie question..

I found out that in every output stage of line amp (tubes/SS) usually use high transconductance and low mu device to get high output current. My question is what actually high/low output current do to the sound (sonically)? do they make loudness? Thank you very much for your answer..

 

[sahib]

Where you need high current drive capability on an output is when you are driving low impedance load. Voltage is not your friend there. Primarily it is to do with the topological need. Sonic is just the by product.

 

[simonsez]

Thank's Sahib,
Still confuse, What happen if it too much or to less?
Which one that have effect on signal level, current or voltage? ???

 

[ChrioN]

Too much? Output stages are not constant current devices...
How much current between the output stage of the first device and the input of the second device depends on the "demand" aka load.

Thank's Sahib,
Still confuse, What happen if it too much or to less?
Which one that have effect on signal level, current or voltage? ???

 

[simonsez]

Too much? Output stages are not constant current devices...
How much current between the output stage of the first device and the input of the second device depends on the "demand" aka load.

Ok, what if too less/ not enough current to drive the next device?

 

[sahib]

There are only two things can happen.

If your stage struggles to cope with, then the distortion starts to rise. But if it can not cope at all, then your circuit does not function properly.

 

[simonsez]

Ok, For sure, I should reading the book again. Thanks guys..