Your pop account won't accept mail from dynamic IP servers, and I just haven't got round to bypassing it. Will do it now, check your mail.I use 0.25" brass tubing for my mic wands, and it's available from good model shops. At one end I have a miniature 2 pin skt (0.1" pin spacing) to take plug-in mic capsules, and at the other I use a DC power connector of the type you find on power connectors for tranny radios. The power connector fits a treat in the 0.25" tubing, and may be soldered into position. You can obtain threaded camera adaptors for a few pence (well .... p'raps a little more) at photo shops, which can be attached to the wand, allowing easy mounting on a standard camera tripod.
For mic amplification I have a Mitey-Mike design, which I bought as a kit. It cost an arm and a leg, and is way over the top for LS testing. I have used a single MC33171 design, run on a 5v supply, which gave identical results. The Wallins designs fall somewhere in between these, so either should give you what you need. In general, the more complex designs offer a lower noise floor, which is not of much consequence if you're only going to use your mic for LS testing. One point though: don't rely on the mic input to a soundcard or laptop as the freq response often drops like a stone from as little as 5Khz, and even a cal file is unlikely to be able to recover a sufficiently reliable signal at HF.
I don't have a website to display anything, but I do have a zipfile I can send you with detailed jpegs of my mic bits and pieces. Also, I have a design for a portable testing amp, based on the LM380, if it would be of interest.
JTT (John Tiernan)
For mic amplification I have a Mitey-Mike design, which I bought as a kit. It cost an arm and a leg, and is way over the top for LS testing. I have used a single MC33171 design, run on a 5v supply, which gave identical results. The Wallins designs fall somewhere in between these, so either should give you what you need. In general, the more complex designs offer a lower noise floor, which is not of much consequence if you're only going to use your mic for LS testing. One point though: don't rely on the mic input to a soundcard or laptop as the freq response often drops like a stone from as little as 5Khz, and even a cal file is unlikely to be able to recover a sufficiently reliable signal at HF.
I don't have a website to display anything, but I do have a zipfile I can send you with detailed jpegs of my mic bits and pieces. Also, I have a design for a portable testing amp, based on the LM380, if it would be of interest.
JTT (John Tiernan)
Hi John,
I don't believe that FA have the capsules I'm primarily interested in (WM-61x). Please email your mic files/pics to vikash@purplecoral.com. Very much appreciated
Or perhaps post them here on the forum for everyone if there's only a few pics.
I don't believe that FA have the capsules I'm primarily interested in (WM-61x). Please email your mic files/pics to vikash@purplecoral.com. Very much appreciated
Or perhaps post them here on the forum for everyone if there's only a few pics.
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