If you own a studio project C1 microphone
This very easy mod is perfect for you.

I got my C1 about 15 years ago and it's been collecting dust
for the past 10 years.
It's not that the C1 isn't a good mic
It has good electronics, it's solid and has a good capsule (k67)
but I found the original C1 to be sibilant and hyped on high frequencies
which made me put it aside compared to other mics I own.

Microphone-parts.com offer an easy mod
to fix the high frequencies and the noise level

I built a 2 kits from microphone-part.com
in the past and once again I'm surprised
how good the C1 now sound and
how easy the built was.
(Thanks for the very detailed instructions)

Any comment or question about the video will help ! ;)