| Johnix |
Hi,
1st of all, i'd like to know the exact connections inside a jack plug :
For a stereo jack :
the extremity is the left signal
the middle is the right one
then it's ground (the bigger one)
Is this correct ?:confused:
For a mono jack :
the extremity is the hot point
then the bigger part is the ground ?
Correct as well ?:confused:
If so, when you connect a mono (male) plug inside a stereo (female) one, is there a risk to short-circuit the right channel of the female plug (through the common ground of the male plug) ?
I am designing a headphone amp so this has to be taken into account :D |
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| Netlist |
Hi Johnix
Stereo: correct
Mono: correct
Yes, you will ground your right signal. This is not correct but not harmful to the headphones or amp.
Edit: It's harmless at line level, which isn't your case. You will short your amps right output and that's not good.
/Hugo :) |
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| Johnix |
So I suppose my amp need to work even with it's output grounded :xeye:
Not easy.... |
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| Netlist |
Grounding amp inputs is harmless, grounding outputs is harmfull.
Maybe I wasn't clear enough.
So you should use both male and female stereo jacks.
/Hugo :) |
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| Johnix |
Well, I personnaly won't plug a mono jack in my female stereo socket :D
I was just thinking of what could happen if somebody not aware of that problem accidentaly plugged a mono jack :dead:
What about inserting a resistor between the output of the headphone amp and the socket ? :att'n: |
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