OPEN SOURCE DIY Mic Project - ORS 87 - Stripped Down u87

[mic test]

I don't know my way around and wanted to ask if it's all right
I measured here

 

[Khron]

I don't know my way around and wanted to ask if it's all right
I measured here

... And that is exactly how you (most likely ) zapped your JFET.

The gate pin is "in the air", not connected to anything..? Any particular reason for that? The 1Gohm resistor that's supposed to be connected to it, is soldered on the board, i see.

Why would you have needed to measure the capsule bias voltage anyway, though?

 

[mic test]

You're right, I'll re-solder that
It has very little gain Apollo Twin 10dB full volume for headphones DT 770 and I sound minimal it sounds muffled and very quiet compared to a brown Phanthera Microphone In the UAD display I come when I speak normally not about -27 dB the brown phanther test is at -13dB

 

[Khron]

I'm not surprised, if the JFET gate is completely floating. Is that still the same JFET from those measurements in the photos?

 

[mic test]

I connected it it is the second circuit in the first was everything soldered on the PCB

 

[Khron]

I connected it it is the second circuit in the first was everything soldered on the PCB

STOP PROBING ANYTHING ON THE JFET GATE!

It might help if you also read and understood other people's advice too:

As a general rule, you should always measure from GROUND to the pin you're checking voltage on. 1) Because generally, voltages are referenced to ground, and 2) because then you won't be inadvertently introducing a higher voltage at that point through the meter.

If you measure JFET pin voltages relative to ground, nothing bad will happen. DO NOT measure JFET pins relative to B+.