markfarrowaudiopost Posted June 9, 2013 Report Share Posted June 9, 2013 I've just got back from a doco shoot and noticed the boom and lav phase is inverted differently. I used both a 416 or Ntg3 with a lectro 200 set. From what I read this is very normal, so why don't all mixers have a phase switch? Quote Link to comment Share on other sites More sharing options...
mikewest Posted June 9, 2013 Report Share Posted June 9, 2013 Some do some don't. If it's your equipment check phasing and re-wire cables accordingly mike Quote Link to comment Share on other sites More sharing options...
markfarrowaudiopost Posted June 9, 2013 Author Report Share Posted June 9, 2013 Just made a phase rev cable Quote Link to comment Share on other sites More sharing options...
Benjamin Gandy Posted June 9, 2013 Report Share Posted June 9, 2013 A lot of mixers have a phase flip on their second (and fourth) channels for MS flipping. The 302 and 442 only have flips on channel 2, so I'd use 2 for the pole and 1 and 3 (and 4) for lavs if I needed to flip it the pole. I have found that my NTG3 is out of phase with my Senns, although I usually just make a note of it and recommend post flip it. I was thinking of making a couple of phase flip cables, but you can buy adapters for about £5. Quote Link to comment Share on other sites More sharing options...
jrd456 Posted June 9, 2013 Report Share Posted June 9, 2013 So,you tested the phase? If not they may have different acoustical phasing [delay] J.D. Quote Link to comment Share on other sites More sharing options...
podgorny Posted June 9, 2013 Report Share Posted June 9, 2013 So,you tested the phase? If not they may have different acoustical phasing [delay] Exactly. Individual microphone polarity is, to some extent, inconsequential. What matters is the phase relationship between distant and close mics. Quote Link to comment Share on other sites More sharing options...
Toy Robot Posted June 9, 2013 Report Share Posted June 9, 2013 Exactly. Individual microphone polarity is, to some extent, inconsequential. What matters is the phase relationship between distant and close mics. Right. I was going to say 'how do you know?' but this post and the one above it lead in the correct direction. Quote Link to comment Share on other sites More sharing options...
Zack Posted June 10, 2013 Report Share Posted June 10, 2013 We talking polarity or phase? Quote Link to comment Share on other sites More sharing options...
podgorny Posted June 10, 2013 Report Share Posted June 10, 2013 We are talking about both. The original post was asking about polarity, which of course led to answers involving phase. Quote Link to comment Share on other sites More sharing options...
podgorny Posted June 10, 2013 Report Share Posted June 10, 2013 It's worth noting that inverting polarity on a solo channel does change the sound, particularly on sounds with large transients or uneven positive and negative halves of the cycle. So there is value to having polarity reversal available, though on a shoot where the relationship between close mic and distant mic is constantly changing, there really isn't one "correct" setting. In terms of clarity in all forms of recording the ideal would be to capture everything with a single point source microphone or microphone array, but of course this isn't always (or usually) possible. Quote Link to comment Share on other sites More sharing options...
markfarrowaudiopost Posted June 10, 2013 Author Report Share Posted June 10, 2013 my issue was polarity, not a distant issue, 180 reversed between boom and Lectro, not a deal breaker. But editors like to pan center the audio and play audio tracks at the same time which creates some funky comb filtering. Quote Link to comment Share on other sites More sharing options...
mikewest Posted June 10, 2013 Report Share Posted June 10, 2013 Just do the close talk test and listen Simple! mike Quote Link to comment Share on other sites More sharing options...
studiomprd Posted June 11, 2013 Report Share Posted June 11, 2013 " this is very normal, so why don't all mixers have a phase switch? " some lav mic's are different polarity than others, but acoustical phase is also a factor . and as for the question you pose here: the answer is "because..." Quote Link to comment Share on other sites More sharing options...
markfarrowaudiopost Posted June 12, 2013 Author Report Share Posted June 12, 2013 Well ill be making sure the next mixer I buy has it. Acoustic phase is another story... Quote Link to comment Share on other sites More sharing options...
studiomprd Posted June 12, 2013 Report Share Posted June 12, 2013 " Acoustic phase is another story... " not really... it is another part of the same story! Quote Link to comment Share on other sites More sharing options...
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