Question

Thanks For accuracy, I know that a dedicated lab environment is needed for a reliable frequency response graph, and at least a flat audio card (like my echo indigo which is known to be really flat in both sound and shape ) and a reference sepaker (which I don't have) for poor man's DIY tests. But someone may easily compare two electrets with ordinary speakers (if one mic's graph is in the hand as a reference) and can get a relative idea about the unknown one. And that was what I did. I unfortunatelly don't have well known WM60-61s around thus I used a WM54 instead. I have WM54's specs sheet here, and graph looks almost ruller flat. Of course I couldnt see the same in my test settings due to my non-flat speaker? But since I just wanted to compare two, it was no problem. Here is the result: [attachmentid=1309] No huge difference? And a bit less mids which I prefer at the moment. By the way I'm also a little bit sceptic about those ruller flat graphs. But I better keep this for an other thread Best regards.

Hello This is the result of my "most basic construction" experiments. As I mentioned in the topic, I was looking for a solution to record our band's rehersals and the last time a SPL meter positioned in the middle of the room was showing values around 126 dB. But as a personal preference I did not want to carry/use a mic heavier/bigger than half size/weight of my MD recorder. To make the story short this mic connected to mic-in of my Sony caused no distortion, no audible hiss and no excess bass with enough tonal quality and stereo seperation (despite their omni pattern). This is maybe due to cardioid behaviour of omni electrets at high frequencies. I set recording volume to manual and around 4/10 or so. Here are the pics: [attachmentid=1303] I soldered point A and B to ground and C to signal/plugin power and shrink wrapped them. There was no significant difference btw left and right channels despite non pre-matched capsules. [attachmentid=1304] [attachmentid=1305] and a very raw graph [attachmentid=1306] Far from a flat response but this is an other issue. Ps: There was a "Eagle international, made in Japan" label on the package of the capsules. But I couldnt find any info about this on the Internet.

Hello These are two electret microphones which I found at a local store. But they have no package, no label, etc. Thus I'm curious about their specs. Please inform me if you have seen such capsules. Regards.

Hello Eventually I decided to start such a topic. I gonna share a simple configuration I accidentally discovered as soon as I take some pics and scan the schematic, although all new/other ideas will be appreciated.

Hello a) Im not sure whether Audition is a VST host but it is probably able to load directx plugins, and some of those mastering plugins have both directx and vst versions b ) They more or less do finalizing from noice, hum cracle reduction to normalisation, dynamics and stereo enhancement, reverberation, eq, etc etc.. and some have many useful presets Byes

Thanx for reply

Hello Plugins likle iZotope Ozone, Yamaha Final Master VST, Voxengo Soniformer Mastering VST may also be a helpful approach to simplify mastering process regards

Hello I decided to build a new mic for my old (oooold) MD But couldn't decide which method to choose... And here are the options: a) passive battery box with linkwitz modded 2 pin capsules without highpass capacitor vs. b ) passive battery box with linkwitz modded 2 pin capsules with highpass capacitor vs. c) passive battery box with non moded 2 pin capsules vs. d) passive battery box with non moded 3 pin capsules (with internal resistors) vs. e) active battery box (a preamp inother words) with modded or non modded 2 pin vs 3 pin. f) and if preamp then which IC All ideas will be appreciated Best regards

Thanks for all info Regards

Thanks for reply I wonder if this wiring helps SPL a little bit or cause more distortion/hiss A = Output + plugin power B+C = Ground

Hello What is the correct wiring for 3-pin electrets with this schematic for MD's plugin power mic input? Any ideas will be appreciated Regards