clepsydrae
Active member
- Joined
- Apr 19, 2014
- Messages
- 44
Hi -- I got two CAD CM217's super cheap off craigslist. One works and actually sounds really good, the other has substantially more hiss and a bit less highs. It's just barely usable, but definitely seems out of range of natural variation between mics.
I managed to tear the bad one apart, with minimal collateral damage, cleaned off the board with some isopropyl, looked for anything obvious and didn't find anything. I jiggled everything around looking for bad solder joints/etc while monitoring the output. Moved the switches back and forth a bunch of times, etc. (I also ruled out cables and the audio interface/etc.)
Is this kind of symptom something that may just come from a bad capsule, or is there something to look at in the circuit? E.g. replace the large capacitor, etc? It's mostly tiny SMD stuff, but I'm not afraid to attempt some microsurgery if there's something to try. Happy to post pics of the board/etc if it would be useful. I just wanted to see if I should even bother going down that road, but it seemed to my naive brain like it was more likely the circuit...
Thanks for any ideas!
I managed to tear the bad one apart, with minimal collateral damage, cleaned off the board with some isopropyl, looked for anything obvious and didn't find anything. I jiggled everything around looking for bad solder joints/etc while monitoring the output. Moved the switches back and forth a bunch of times, etc. (I also ruled out cables and the audio interface/etc.)
Is this kind of symptom something that may just come from a bad capsule, or is there something to look at in the circuit? E.g. replace the large capacitor, etc? It's mostly tiny SMD stuff, but I'm not afraid to attempt some microsurgery if there's something to try. Happy to post pics of the board/etc if it would be useful. I just wanted to see if I should even bother going down that road, but it seemed to my naive brain like it was more likely the circuit...
Thanks for any ideas!