Originally Posted by astro
I'm thinking perhaps the crosstalk was always there but I just never tested it. From googling, several sources suggest that crosstalk is common when using a common ground, and apparently there's no way around it with a 3.5mm minijack.
This is ********. While "unavoidable" impedance in a shared ground does cause crosstalk in certain situations in practical applications with headphones its just an idiot parroting what he does not understand.
If the common ground has a VERY low impedance relative to the headphone impedance it will have no discernable effect on sound. Measure the impedance across a properly soldered 1/4" plug and get back to me on that....
If the common ground does not have a low impedance relative to the load impedance it will start to create stereo crosstalk. When does this happen? Read on -
With practical headphone-ish loads (16ohms and up) the only time you see crosstalk from ground is if you do not solder the ground connection properly.
With loads in the 1-2ohm range (lolerskates im an idiot for mentioning 1-2ohms on a headphone board) the effects of the internal resistance in the plug & connector can cause crosstalk. Its too bad for the parrot that nobody uses 1-2ohm headphones, so mentioning it is an indication of no understanding.
Can you measure the following:
Tip to Ring
Sleeve to Ring
Tip to Sleeve
and report back.