Originally Posted by Ox Han ➡️

Did you buy it used or new?

Either way, I’d reach out to Guo Zhuang at 3U

Originally Posted by cjwit ➡️

Hi everyone. I'm struggling to find help on this, so please kick me out and send me somewhere else if that's the best choice.

I purchased a 3U Audio CM1 SE Teal earlier this summer and, when I received it, there were loud distortions that sounded like wind noise. The capsule was dirty and after I cleaned it, the mic sounded great. Just this morning, though, the problem returned. I opened it back up and there were no clear things to clean out, but I tried quickly anyhow and it didn’t make a difference.

I made up a test track demonstrating the problem by comparing the same audio as recorded by my Beta 57A and the CM1.

https://soundcloud.com/witulski/3u-a...ainst-beta-57a

Is this kind of thing a known issue with the CM1s or something more broadly connected to regular LDC maintenance? Is it dead or fixable? I'd welcome any advice you might have! Thanks.

Originally Posted by gmatkin ➡️

Could it have been affected by damp?

Originally Posted by gmatkin ➡️

I'd be nervous about cleaning a capsule; the membranes are microns thin, and tensioned in a very particular way.

But assuming you did it very gently and caused no harm, I'd suggest your problem could have been caused by damp, perhaps as a result of being stored somewhere that gets damp.

That sort of problem can sometimes be fixed by putting the mic somewhere very dry and warm for a week or two. If that doesn't work, I'd suggest you have a candidate for a new capsule; they're not hard to install if you can use a soldering iron, and you can learn that from YouTube if necessary.

You'd need a capsule with a single gold sputtered membrane, and I'd guess you'd do best with a capsule as much like the original as possible.

Gavin

Originally Posted by cjwit ➡️

Thanks again. I'll look into the costs of replacing the capsule vs. giving up on this particular one! I hate to toss something that could be fixed, but there's something to be said for saving your time and energy for playing instead of tinkering!

(I wonder, is it worth looking into an upgraded capsule, or will the other electronics and the uncertainty about the problem make the rest of the body a poor donor?)

Originally Posted by cjwit ➡️

Thanks. I sent a message to the email at the 3U website and have seen good comments here about him getting back. Hopefully there's news there. But I did get it used, so the question will be whether it's out of commission and, if so, what to replace it with...