Miguel Carretero Posted July 15, 2016 Report Share Posted July 15, 2016 Looking for some advice so I can plug a mic to any line level only input; there are different settings out there.... Using 10kOhm & 100Ohm resistors seems to be one of the most common but I am not shure if it is the right choice for me Any help? Cheers! Quote Link to comment Share on other sites More sharing options...
John Blankenship Posted July 15, 2016 Report Share Posted July 15, 2016 You have not furnished the majority of information necessary to know your needs in order to do this properly. A 40dB unbalanced attenuator can be constructed with the two resistors you listed if that's your goal. Quote Link to comment Share on other sites More sharing options...
Peter Mega Posted July 15, 2016 Report Share Posted July 15, 2016 1 hour ago, Miguel Carretero said: Looking for some advice so I can plug a mic to any line level only input; there are different settings out there.... Using 10kOhm & 100Ohm resistors seems to be one of the most common but I am not shure if it is the right choice for me Any help? Cheers! Your subject title says Line to mic attenuator which is easily purchased in the form of an inline barrel. Shure make a switchable version. However, what is confusing is your question asks about plugging a mic into a line level only input. For this you need a mic to line amplifier which can be a battery powered box. Shure also make one of these. Other options are available like running the mic through a small mixer like a SD302 for example, to bump the mic level signal up to line level, then into your line level only device. Quote Link to comment Share on other sites More sharing options...
Miguel Carretero Posted July 18, 2016 Author Report Share Posted July 18, 2016 Thanks John seems that´s exactly what I´m trying to do. Just plugging a mic into the red cams line jack input i.e., or into any other line input. Sorry Peter I tried to explain myself easily but I don´t get it right often. I need to build the barrels on my own, no chance on using mixers or boxes 40dB would be the proper attenuation then?? Thx in advance Quote Link to comment Share on other sites More sharing options...
T_will Posted July 18, 2016 Report Share Posted July 18, 2016 NO NO NO. READ Peter's post again. Mic into Line = you need to Amplify NOT Attenuate. Claro? Quote Link to comment Share on other sites More sharing options...
Derek H Posted July 18, 2016 Report Share Posted July 18, 2016 Attenuate means make less signal... Sounds like you need to boost the signal of a mic to feed a line input. You've got it backwards. Quote Link to comment Share on other sites More sharing options...
Miguel Carretero Posted July 19, 2016 Author Report Share Posted July 19, 2016 You are right fellows; I´m trying to plug a line into a mic input. You know Red cams only accept mic... So definitely I´m needing attenuators Quote Link to comment Share on other sites More sharing options...
John Blankenship Posted July 19, 2016 Report Share Posted July 19, 2016 Then I'd recommend making it balanced rather than unbalanced. Quote Link to comment Share on other sites More sharing options...
Miguel Carretero Posted July 19, 2016 Author Report Share Posted July 19, 2016 Thanks John; that´s a better idea I would tell I need to place a 10kOhm on each positive and negative poles, and after then, just a 100Ohm across both.... but this set will change my phase... Is this correct? Quote Link to comment Share on other sites More sharing options...
John Blankenship Posted July 19, 2016 Report Share Posted July 19, 2016 Probably no phase difference between this and the single-ended version, but keep in mind you have chosen not to include all the pertinent details that would make it easier to help you . This version of the pad would result in about 46dB of attenuation -- which would work fine with some line outputs and some models of Reds. Quote Link to comment Share on other sites More sharing options...
Gordonmoore1 Posted July 20, 2016 Report Share Posted July 20, 2016 The resistor attenuator scheme will not change phase or affect it in any way. Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted July 20, 2016 Report Share Posted July 20, 2016 Yes, the (balanced) H-pad resistor scheme would not change the phase unless.. the R-1&2 get reversed between in/out. OT: the forum's reply GUI is currently working, after being forked-up (again) for a few days Quote Link to comment Share on other sites More sharing options...
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