i was making a lead to attach a balanced shotgun mike to a Panasonic NV-GS230 DV camera, minijack stereo mike input. This is now interesting because i made the lead, Ring to negative polarity for balanced mono Tip to positive polarity for balanced mono Sleeve ground. it worked Really very well, but i suspect one of the stereo tracks on my DV tape is out of phase? what do you guys reckon?
If the input is expecting a stereo signal & you're instead sending it both sides of a balanced output, then yes, you will be 180° out of phase, as that's the whole idea of the balanced signal - each pole is out of phase with the other.
When the signal arrives at the other end, one pole is inverted & the two signals them summed - this makes any noise picked up on the way out of phase & therefore cancels itself out.
You actually need to unbalance the signal yourself, then send the same signal to both sides of the stereo input.
Send the cold pin [usually pin 3] and the shield [pin 1] to the sleeve, then the hot pin [pin 2] to the ring. Bridge the ring to the tip [connect the 2 together in other words]
You really don't want long cables if you're doing this, as they are liable to interference.
This is the best pic I could find of how to do it, courtesy of Photobucket