But I'm confused by the statement "a 3-wire battery box has TWO input connectors (either mini-plugs or mini XLRs)". Are you saying it has one of each or are you saying it has two mini plugs OR two XLRs?
I'm saying the 3-wire battery box requires
either of the following:
option A: TWO mini-plugs (one mini-plug for Left channel, one mini-plug for Right channel)
OR you can do
option B: TWO mini XLR plugs (one mini XLR for Left channel, one mini XLR for Right channel)
The point being: each microphone needs to have its own input connector, because 3-wire powering requires that each microphone - both the Left and the Right mics - have their own shield/ground wire. (If I mis-stated that, please chime in, Richard or someone else.)
Has anyone verified that this mod will work with the AT933 or 943's? How about other electrets/lavs?
Well, take a look at the electret wiring chart here:
http://www.sennheiserusa.com/newsite/pdfs/Sennheiser_electret_wiring.pdfOn page 3 and 4, if I'm not mistaken, it *appears* that SEVERAL various electret microphones have either a 4.7K or 8.2K resistor sharing the same pin as the "red" wire. Again, I could be wrong, but there are definitely 4.7K + RED wire connected to the same pin on some of the electret mics in the list.
Being that some Sennheiser microphones (MKE-40s, and
some of the MKE-2 omnis) have 2 conductors + shield, I would imagine this "4.7K mod" would work for those microphones as well. And as soon as I get in the MKE-40s that I won in an ebay auction, I will be checking out how difficult it is to perform this modification on the mics.