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Re: SimpleP48 -- Polarity
¿ªÔÆÌåÓýI'm a little confused, myself... all the SP48 mics I've ever made have capsule + to XLR pin 3. A few years ago I went through all of my microphones (commercial and DIY), and all of my devices and preamps and 1/8" jacks and cameras and such, to confirm polarity on everything... I do a lot of stereo recording, mid/side, etc, so I needed to be sure, in order to avoid confusion and delays when mixing. The only things that tested "wrong" were some PiP inputs (e.g.
Zoom H4N PiP inputs are "inverted" polarity), an EV666 dynamic, my
dbx RTA-M measurement mic, the 12AX7 stages on a tube amp project,
and a few other minor things. All the SP48 mics tested as normal
(i.e. matched all the commercial mics), which if I'm understanding
this thread correctly should not be the case... ? I just tested a SP48 mic again (against an AKG C-535-EB) and it seemed to be of correct polarity. Looking back through all my old project schematics, it's always pin 3 to +... (with one exception, which is the RCA mod SP48, but my understanding is that that circuit is supposed to be reversed from normal.) When testing polarity, I hold two mics right next to each other,
make a deep "p" pop sound, and in the DAW confirm that the
wavefront excursion for both mics is in the same direction. Jules -- have you confirmed anything recently one way or the
other? -Casey On 12/17/23 05:52, Jules Ryckebusch
wrote:
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