开云体育

Hey guys (and gals), I just wanted to drop a line to say thanks to this community. This is my first post, but I have been reading the board for the past few weeks. I am a singer (amateur with mediocre talent) and am interested in recording some stuff at home. Most of my mics are dynamic and I have really wanted to get a decent condenser, but just cannot bring myself to spend the hundreds of dollars to buy a "good" mic. I have owned an MXLV67 for over a decade but have never been happy with the sound so it has spent most of it's life in it's box. A few weeks ago, I ran across a YouTube video of someone building a condenser mic and the bug bit me. After a bit of research on the internet, I found JLI and watched the build videos. I ordered the parts for a "Samantha" OPA Alice board with the 34mm electret capsule. I also got mounting kit, 34mm saddle, and 22nF caps for the XLR as instructed in the video. I bought the cheapest CAD 1800 ($17) mic on Amazon just to get a donor body and after a couple days of tinkering, managed to build my first microphone. The first time I plugged it in was truly magical. For a little under $100 I have a great sounding mic with very little noise. I sang for several hours straight just enjoying it and playing with different compression, EQ, and effects settings. Despite my poor soldering skills, it turned out great! So of course, down the rabbit hole I go. My next project was to build with a true condenser capsule and following the JLI videos again, I ordered an OPA Alice board, the hex inverter board, the K47 capsule and installed them in a cheap U87 body I bought for $23 on walmart.com. It was on this project that I made my first major mistake. I overheated one of the xlr pins and bent it out of place, so I ordered some XLR inserts from amazon. Meanwhile, I finished installing the pcbs and capsule and waited for parts. As soon as the parts came in, I finished the mic and it worked the first time! My soldering is getting better now and I am more confident with it. This mic sounds great, but still has a bit of noise that I intend to chase down. Probably poor soldering hygiene. While waiting for parts I came across this https://www.opic.jp137.com/index-multi.html webpage and started contemplating assembling a pcb from scratch. This led me to Mic Scharf’s PCBway shared projects (https://www.pcbway.com/project/member/?bmbno=8A368813-05C9-44). So I ordered the MP PCB, hex inverter pcb, and the opa alice handheld boards (5 of each). I had a lot of fear of the soldering required so I worked on a couple of practice soldering projects while waiting for the parts to come from China. In the meantime, I ordered parts from Mouser enough to complete 2 of the OPA Alice handheld microphones and 2 of the 25mm electret capsules from JLI. Last night I completed my first pcb and installed it in a KMS 105 clone I bought off amazon for $10. It worked the first time I plugged it in and it sounds amazing. This might be my favorite microphone yet. I need to see if it can stand being plugged into my PA system for a little karaoke with out it feeding back. I am skeptical cause it is ultra hot with very little gain on my Yamaha interface. So I started my journey back on 3/14/2025 with my first order to JLI. Here I sit three weeks later with 3 completed microphones and parts for another on hand. I spend way too much time surfing Chinese websites for cheap mic parts and am working on a Mouser order for my next project. Can we form a 12 step support group or something, cause clearly I have a problem. Thanks again to Jules and all the others on this site who inspire ordinary folks like me to leverage this technology. Whole new worlds are opening up to me when I see what can be built from PCBway projects as well. I have a lot of interest outside of microphones like retro computing and I want to build some stuff for my commodore 64 now.

Hello everyone I found a curious model to build. https://aliexpress.ru/item/1005008213357702.html?spm=a2g2w.orderdetail.0.0.4a5a4aa6WoPxIa&sku_id=12000044258152672 I want to use the Primo EM288Z1 as a replacement for the Sanken cos-11d with the Sennheiser 5212 Radio System. I just don't understand, is it necessary to use a preamp or is it enough just to solder the mini jack? Maybe there are some nuances of connection?

Hi all. I spotted an old youtube video recently, where the guy dismantles a pair of Rode NT1a to capsule and pcb, and fits them in a blimp, and I'd like to do something similar. I have a pair of LDC I bought recently, heavily discounted, that I can use. The video is here: https://www.youtube.com/watch?v=quuHV9pTyoo&t=2s I won't be needing his powering solution, or preamp circuit as I'll just use a Zoom F3 externally to supply a preamp and phantom power. I'm curious if anyone has done similar with LDC capsules and experience on protecting and mounting the capsules and circuit boards in a blimp. thanks in advance Damian

Like on of these, the one that mount inside the chassis with a screw. Can't find them anywhere!

I've recently seen the schematic for the Alctron MA-1. However, there are a couple of features that aren't clear and I hope to get some help from the group. On the input side, after XLR1, there are two items labeled S1 and S2. They look like switches. S1 could be a mute switch. S2 looks like it connects XLR1-3 to either R1 or R2, perhaps to compensate for mic Zin. The other question I have is: where is power applied? Alctron's literature says it "operates on 48V, but does not pass phantom power to the mic." OK, but where is the power applied? Dan

Dear All, My questions are, In the simpl48 circuit, what is the role of the capacitor? What happens if it is not used? What are the results at different values? Many thanks.

Greetings, I've a RCA/Shure Model # MI-559156 that I am trying to find a schematic or user manual for. This mic looks like a 444 or 444D & has a Shure Brothers sticker on the bottom but has some unique circuit construction in the base. The mic element has only 2 connections so it is not the 444D element. There are 3 or 4 resistors & a capacitor inside the base and has black, white, red, green cable wire. I did search old messages here & the interweb but haven't found anything. I also contacted Shure to no avail. This is my last hope! 73 Bob

Hi all, I would like to create a little circuit box that merges the signals of two ambient mics (L/R) with a single vocal mic (M) before entering the preamps. So I can record stereo ambient and vocal simultaneously on my sony cassette 2 Track cassette recorder. The recorder has two decent mic preamps without phantom power. Is that possible? How would a circuit like this look like? I was thinking of using two omni primo capsules for ambient and a XLR input for the extra vocal input (potentially condenser +48V). Ideally there would be a single switch or potentiometer with which I can switch from only ambient, to only vocal mic, and some in between settings. Is there someone that could help me out with a circuit sketch? And what would be the easiest way to add phantom power to that device? The whole rig is intended to be used in the field and with batteries. I could install 9V block batteries or also 3,7V Lipo batteries as power supply. Any help is greatly appreciated! Thanks M

So ive built an Ambi-Alice based on the Instructable by Jules and used em272 capsules. I noticed my mistake (that these are omni and not cardiod capsules) and ordered some TSB2590 knockoffs off of ali. They arrived and sound fine but I get a weird electrical buzzing sound wich gets amplified if i touch the capsules, so i suspect it could be a grounding issue. I used 4.7uF Capacitors and 100k ohm resistors for the simple p48 circuit wich worked great with the em272s and should also work fine with the new capsules right? Is there a way to fix this? The instructable doesnt use the cable shielding connected to the microphone capsule, could this help or am i gonna destroy the mics by doing that? Any help would be appreciated :D