2

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?

  • What makes you think it's out of phase? – Andy aka Oct 17 '15 at 10:06
1

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

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.