Nice job Dave. I was talking to Bob Heil about the RE20 and he sniggered "all marketing" (laughing) but it's not - as you proved. I use one for all my videos, hence my interest.
The real beauty of the RE20 is the lack of resonances. There is very little LF coloration from rear chambers or heavy diaphragms that manufacturers use to add LF. So many dynamic mics add a bong or a woof sound, the RE20 is warm and smooth sounding.
@@DaveRat Yep.. I use RE27 too for another application (Live shortwave ham radio) and it works fine but too much punch for me. RE20 fine but I still need to lift me up at around 2k. Anyway.. good luck.. I enjoy your fun and games!
Dave, thank you. It's my weekend to repair foam rot on the RE20 and AT825. Not looking forward to RE20 but your video was a great roadmap. Thanks again.
Very well done sir 🙏 Regarding your "honky" mic: sweep the filter circuit's frequency response and look for a deep notch where you are hearing the honk, if you don't see that notch in the passive eq that is why it sounds "honky." It's very possible the diaphragm is stuck, sometimes they can be unstuck sometimes the diaphragms are too far gone/damaged. Sometimes it's the voicecoil itself that is starting to fall out of shape or is pinched in the gap in those cases it's new voice coil time. Sometimes it's debris in the gap preventing the coil from moving and holding the diaphragm in a restricted state. This debris is often the old glue crust from the adhesive which used to hold the pole piece to the magnet. Microphone won't pass a freq response within limits (might still sound good) if not air tight. HPF components are the inductor only. If it goes open it can be rewound with #40AWG magnet wire, fill the bobbin. Less turns less rolloff more turns more rolloff. Modern PCB version can be rebuilt too but less common to fail. If microphone is in permanent "rolloff" check that the switch isn't stuck closed. There are better ways to route the wires than the factory method of folding them up in the rear cup making future disassembly much easier with zero downside in performance. Blue loctite 243 on the 9/64 rear cup screw may or may not help with accidental twisting when installing/removing from a 309a. That aluminum triangle bracket is really soft, don't over torque that screw or you will crack and break it. The name dB is great 🥰 2020 put me years, literally years behind in repairs but I'm slowly catching up.... sorry everyone. Surely if you've watched this video you can appreciate the effort that it takes to repair, and sometimes it doesn't go this smoothly as Dave makes it look easy ☺
This is a great series man. Appreciate the insight. Is modern foam better formulated to not turn into deth dust? Just wondering if this is going to be a recurring issue in the future if the mic was recently refoamed. Thanks again!
I want to do the same with my sm58s and other handheld mics, but I fear I'd break something... I have light foam, I believe it came from a PC motherboard box. Would that be ok? Hope you'd make a video, it seems simple enough to do but a video from you would give me the courage. The degraded foam is annoying, I'd like some high end back on my mics :) ..Thanks for making this video
Probably buying some cheap or original Shure replacement grills will get you mostly there easily. As far as foam on the capsule, dav with damp paper towel , don't let water seep to the diaphragm.
Can you recommend anyone or company that can perform a refoam on the RE20's that is near Memphis, Nashville or Cincinnati? I would gladly pay for someone that is experienced in doing these just to get mine refreshed. Mine does NOT have the rattle though so that at least is a good thing.
Don’t laugh too hard. In 1977, I recorded Betty Wright live in Miami hand holding an SM7. She was such a sport and was rewarded for her efforts with a platinum record. We remained friends til the end. ❤️
Going off topic, but still on the subject of mics designed to minimise proximity effect, why did AKG discontinue, or not update, the D202 / 224 / 222 range? I like them very much. Does anyone still have a working D224? I've got a couple of 202s.
great vid! i tried to fix one some time ago, got almost as deep as you do but still have a noise issue with it, so i guess it might be a problem behind the capsule, can anybody give some hints? THX
@@DaveRat some buzzing sound like some electrical component wasn't connected right, also i didn't know how to open it and as far as i remember there is one copper coloured wire that was torn and i didnt know how to connect it.. I dont have it here right now but your video inspired me to look over it again...
oh , the 6:35 hot glue . reminds me of the dreadful oscars this year with west side story and someone had birds-nest hot glued to her head ? well wacky oscar rich people . never repair fix microphone before all those behringer ECM8000 and the clones they seem have brittle mic that seems made of diecast metal ? and one snapped in half . flipping cheap chinese garbage
No, the build quality of these and many mics is amazing. The Re20 is a rugged steel that is strong but can rust if the paint chips and exposed to moisture the 441 is cast but the metal is quite strong for the intricate structure. Many mics are machines brass. Cheaper mics tend to be rugged mics mics like nice watches are well built and rugged but also delicate
