@rodman99999 thanks a lot!!! You left me with a question: I took a look at the specification of line output, and it says it should produce a load between 100 and 600 ohm. In my case, if I use a potentiometer of 1k with a 100ohm (R2), what would be the resulting load when the potentiometer is at 1k ohm and when the potentiometer is at 0 ohm? I think the load value will be exactly the potentiometer value, right? So I should add a 100ohm resistor in series with it to make sure I never get below 100 ohm?
Voltage divider/attenuator
I have a 10V audio source that I want to bring it to line level 1V. That’s pretty easy: I just need to use a voltage attenuator 10:1 like image below. I used resistor values of 1k ohm (R1) and 100 ohm (R2) and it worked great! BUT I have a question: what if I had used 100k and 10k ohm resistors? The ratio is still 10:1 but I think it would not produce a good result (I have no idea why I think so).
Would you please tell if I am right? If so... should I use 100 ohm (R1) and 10 ohm (R2) resistors instead of 1k ohm and 100 ohm that I am currently using? Would it be a good idea? I just want to bring this 10V speaker level to line level and so far using 1k/100 ohm worked fine (no noise, no humming...)... but I am wondering if I am doing it right... should I try different resistor values (keeping the same ratio, of course)?
