QUESTION:
How do I build a microphone cable adapter with a 3.5mm TRS female jack on one end and an XLR male plug on the other, so that I can connect my Countryman EMW lavalier mic directly to my field mixer without going through a wireless transmitter/receiver?
IS THIS RIGHT?
How about if I build a short cable with a 3.5mm TRS female jack on one end and a XLR male plug on the other end, wired as such:
- TRS Tip to XLR Pin 2
- TRS Ring to XLR Pin 3
- TRS Shield to XLR Pin 1
WHAT PUZZLES ME:
- Is the wiring proposal above correct for a balanced 48V connection that will work with this specific lav mic? Will it blow anything out - the lav or the mixer?
- Countryman sells the EMW lav hardwired for XLR, but they say it has a preamp inside. If the wiring proposal above is correct, why is a preamp necessary? (So it can run without P48?)
BACKGROUND:
- I have a Countryman EMW lavalier microphone wired with a 3.5mm TRS male connector as Tip = Red (pos), Ring = Black (neg), Sleeve = Shield.
- The Countryman EMW lav requires power. The rep at Countryman Associates (I called them) says the EMW lavalier can take 48V phantom power.
- My SignVideo ENG-44 mixer provides 48V phantom power to an XLR female jack.
- I want to build this, not buy it (unless it's super cheap)
EXTRA CREDIT
I also have a Countryman B3 lavalier mic with a TS mono connector (wired Tip=Red, Sleeve=Black+Shield). How should a cable adaper be wired so that I can power this lav directly from my mixer with 48V phantom power?