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Old 2nd February 2021
  #10
Lives for gear
 
Quote:
Originally Posted by surflounge ➡️
Fun but expensive remote session recording plan: two Josephson C700S microphones, with each mic’s channels summed to mono into Sound Device Scorpio at 24/192. Spaced mics apart left and right, placed in room with musicians, hit record, leave room, come back later. Deliver stereo mix from the two mono mics on USB stick, sanitize microphones and recorder, pack gear. Escape to record live performances another time. Doesn’t cost anything after initial gear purchase. Could use iso tracks to mix 8.1 surround in post for extra work in addition to the stereo mix, from all mic channels saved on Scorpio.
Question: without considering the $ cost of buying two Josephson C700S microphones and Scorpio, would there be phase anomalies or such from summing each mic's channels to mono, then recording spaced pair as stereo? Maybe this is a question for David Josephson, about using his multi diaphragm mic without separating the channels.
You definitely DON’T want to do this.
If you sum the 3 capsules of a 700S you will end up with the equivalent of a mic pointed to the left. With two mics you will end up with 2 mics pointed to the left plus any phase cancellations. I doubt this is what you want. You definitely should record the individual capsule feeds from both mics. Then in post you will have the option
of adjusting the virtual mic pattern and mic angle (and you can have left and right angled mics rather than two fixed pattern mics pointed to the left.
Decoding using Harpex or the free Rode Soundfield plugin is easiest but you can do it with a mixer.
For the left mic, omni capsule feeds one channel, the forward-facing “X” fig 8
feeds another channel and the side-facing “Y” channel feeds a third channel.
By adjusting the ratio of omni to fig 8’s you can adjust the virtual mic pattern continuously from omni through cardiod to fig 8. With the X and Y fig 8’s as is ( positive polarity the virtual
mic can be steered continuously from 0deg (straight ahead) to 90 deg left). For the “right” mic you would do the sam
Quote:
Originally Posted by surflounge ➡️
Fun but expensive remote session recording plan: two Josephson C700S microphones, with each mic’s channels summed to mono into Sound Device Scorpio at 24/192. Spaced mics apart left and right, placed in room with musicians, hit record, leave room, come back later. Deliver stereo mix from the two mono mics on USB stick, sanitize microphones and recorder, pack gear. Escape to record live performances another time. Doesn’t cost anything after initial gear purchase. Could use iso tracks to mix 8.1 surround in post for extra work in addition to the stereo mix, from all mic channels saved on Scorpio.
Question: without considering the $ cost of buying two Josephson C700S microphones and Scorpio, would there be phase anomalies or such from summing each mic's channels to mono, then recording spaced pair as stereo? Maybe this is a question for David Josephson, about using his multi diaphragm mic without separating the channels.
You definitely DON’T want to do this.
If you simply sum the 3 capsules of a 700S you will end up with the equivalent of a mic pointed to the left. With two mics you will end up with 2 mics pointed to the left plus any phase cancellations. I doubt this is what you want. You definitely should record all the individual capsule feeds from both mics. Then in post you will have the options of adjusting the virtual mic pattern and mic angle (and you can have left and right angled mics rather than two fixed pattern mics pointed to the left.
Decoding using Harpex or the free Rode Soundfield plugin is easiest but you can do it with a mixer.
Using a mixer:
For the left mic, omni capsule feeds one channel, the forward-facing “X” fig
8 feeds another channel and side-facing “Y” fig 8, the right mic is decoded the same except the “Y” capsule needs to be polarity inverted.
(You won’t be needing it, but for “pointing”
to left rear quadrant, you need to polarity
invert only the “X” capsule, for right rear quadrant you need to polarity invert both
X AND Y capsules).
Note that a single 700S can be decoded 2 times to produce any coincident stereo mic pattern ( and continuously steerable in the horizontal plane).

I like David Josephson’s suggestion of a single central 700S plus a
pair of C617’s (a variation of Boojum-Norman). My go to main setup for classical recording is a Soundfield DSF-1 with a C617 1ft on either side to add some spaciousness. And besides the C617 is a terrific mic.