daniel Posted October 5, 2012 Report Share Posted October 5, 2012 Hi, a technical question (so i hope this was the right place to ask). I have previously only used 'Y' leads to feed line level FROM my mixer but i wondering if i can feed (directly, without a separate powering box) 2 mic inputs (of mixer) from 1 phantom powered mic. If so do i switch phantom (p48) powering 'ON' for both the respective I/Ps or just 1? And even if this is workable are there any issues like S/N ratios? thanks for reading, dan. ps. I would have done the experiment but i don't want to damage my mic or mixer. pps. The elements involved include a Sanken Cub-01, SD302, Tascam DR-680 and a source with potentially a very wide dynamic range that i don't want to 'pot' during the 'performance'. Quote Link to comment Share on other sites More sharing options...
Eric Toline Posted October 5, 2012 Report Share Posted October 5, 2012 Hi, a technical question (so i hope this was the right place to ask). I have previously only used 'Y' leads to feed line level FROM my mixer but i wondering if i can feed (directly, without a separate powering box) 2 mic inputs (of mixer) from 1 phantom powered mic. If so do i switch phantom (p48) powering 'ON' for both the respective I/Ps or just 1? And even if this is workable are there any issues like S/N ratios? thanks for reading, dan. ps. I would have done the experiment but i don't want to damage my mic or mixer. pps. The elements involved include a Sanken Cub-01, SD302, Tascam DR-680 and a source with potentially a very wide dynamic range that i don't want to 'pot' during the 'performance'. Yes you can do the "Y" thing and just power one leg but why? If you're feeding a mixer you should be able to send the mic signal from one input to both output channels either by an LCR switch or a pan pot. Eric Quote Link to comment Share on other sites More sharing options...
Mark Vesterskov Posted October 5, 2012 Report Share Posted October 5, 2012 http://whirlwindusa.com/catalog/black-boxes-effects-and-dis/splitters-boxes/splitter-l-premium-mic-splitter-w-lundahl-transfor Quote Link to comment Share on other sites More sharing options...
Jay Rose Posted October 5, 2012 Report Share Posted October 5, 2012 Yes you can do the "Y" thing and just power one leg but why? If you're feeding a mixer you should be able to send the mic signal from one input to both output channels either by an LCR switch or a pan pot. To have it on separate faders, or have separate eq or other inserts, or a bunch of other reasons. We do it in post all the time. (Or at least used to, pre-DAW... now we just duplicate the track.) Quote Link to comment Share on other sites More sharing options...
Mark Andrews Posted October 5, 2012 Report Share Posted October 5, 2012 Hi, a technical question (so i hope this was the right place to ask). I have previously only used 'Y' leads to feed line level FROM my mixer but i wondering if i can feed (directly, without a separate powering box) 2 mic inputs (of mixer) from 1 phantom powered mic. If so do i switch phantom (p48) powering 'ON' for both the respective I/Ps or just 1? And even if this is workable are there any issues like S/N ratios? thanks for reading, dan. ps. I would have done the experiment but i don't want to damage my mic or mixer. pps. The elements involved include a Sanken Cub-01, SD302, Tascam DR-680 and a source with potentially a very wide dynamic range that i don't want to 'pot' during the 'performance'. Answer is yes, you can. I sometimes do it i'm recording a dynamic scene and I have a spare ISO, especially where its a OMB job. I'll pad one channel down, not the other incase I can't reach the fader at the right time. The main issue: It will mean a lower output from your mic, so you will have to crank your gain/trim up higher to compensate, which will result in more preamp noise (this may/may not be a problem depending on your mic and mixer). You just power it once. Not twice. Works fine in both channels that way. Quote Link to comment Share on other sites More sharing options...
daniel Posted October 5, 2012 Author Report Share Posted October 5, 2012 Thanks so much guys. Quote Link to comment Share on other sites More sharing options...
daniel Posted October 6, 2012 Author Report Share Posted October 6, 2012 Ahh. There is something else. If the powering/recording/mixing device has a global p48 switch or it is switched in pairs (of channels) and those are the (only remaining) channels available, would damage or issues be caused if phantom power was present on both legs? dan. Quote Link to comment Share on other sites More sharing options...
Tom Duffy Posted October 8, 2012 Report Share Posted October 8, 2012 I can't say with 100% certainty without looking at the schematics, but in general, if the mixer is designed to supply phantom power, the input stages will have DC block capacitors rated at at least 48V on the Microphone inputs. Even if that mixer is not the one supplying the phantom power, it will not have a problem ignoring it. Quote Link to comment Share on other sites More sharing options...
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