Finally found some time to solder caps to the wires yesterday. (had 4 panasonic mce2000 caps) I'm a noob when it comes to soldering, so I messed a bit with first 2 caps. Then thinking I had enough practice, I soldered the wires to the final 2 caps. I took me a few tries but I thought they were soldered ok. I ran a test in front of my stereo. Levels in both channels were not the same, but I thought that was just because the caps weren't matched. Uploaded the sample to my laptop and equaled levels in soundforge. Listening through my stereo which was hooked up to my laptop, I was pleased with the result. But, when listening to it through headphones, despite the fact that I equaled both channels, the sound still came mostly from the right channel. Link to the sample: attempt 1 So, this morning I resoldered the cap of left channel, which again took a few tries. Ran a test in the same setup as yesterday and uploaded the sample. Difference of both channels was 3 db now so I boosted the channel with lower volume till both channels were equal. Listening through headphones now gave a centered sound. Link to sample:attempt 2 Only Thing that bothers me is that bass is much higher than it was before resoldering the cap. I did remove some bass with an eq which does make it sound better: link Because of this bass thing and the fact that I needed a few attempts to solder the caps, I'm affraid soldering time was too long (maybe with both capsules, maybe with just the resoldered one). Maybe someone with more experience on making these kind of mics could give me some feedback on my story and the samples, and tell me if I did solder too long or if it all sounds ok. Thanks in advance ps. Test setup was mics>spsb1 (batt box @95hz)>sony mz-nh600. Also recorded a sample with sp-cmc-2>spsb1 (batt box @95hz)>sony mz-nh600 to compare with the self made mics, if anyone's interested.