So here's my very simple M/S design from a couple decades ago:
/g/MicBuilders/files/Scott%20Helmke%27s%20stuff/newbiemic-1.jpgIt's not intuitive what's happening here with the side circuit, and it doesn't run off phantom power. The two side capsules form a "long tailed pair" circuit, which is often used for differential inputs. And I can't vouch for the technical specs, which I never measured. But it does work!
-Scott
On 2/7/25 20:17, Arjay1949 wrote:
[Edited Message Follows]
I built an Mid/Side mic using 3 x electret capsules with intergral FETs (in my case they were Primo EM204s) using THIS SCHEMATIC <>
It works pretty well, but as you can see, there are quite a lot of components involved.
It's simpler to create a Mid/Side mic using electret capsules with external FETs. That way allows you to connect the two side capsules in series with? reverse polarity
(As illustrated on Jules Alice M/S mic <>? schematic )
I did an M/S mic based on that 'series wired' side capsule principle which is simpler (and cheaper!)? than creating an M/S mic using electret capsules with internal FETs.
( Some notes HERE <> )
But as you already have the capsules you want to use, fitted with internal FETs, then I think you'll need to build a version with circuitry based more around the EM204 type schematic.....
--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
