Hi all! I am planning to make a circuit using a phantom power for electret capsules. Can I continue the thread? I have prepared several following mics: ...
Hacktex, Here is my suggestion for a circuit that runs from a 9 volt phantom supply. In the Files section, Zapnspark folder: DIYgenericIntFET.pdf DIY Generic...
Thank you, ZAPNSPARK. I have received your PDF. ... I'm afraid I am wrong, but I think source and drain resistors determine Id which is a current flowing from...
When you lower that voltage value, you lower the dynamic range (headroom). For operation, pick something higher. Also look at series current regulators. those...
... Here is an excerpt from the WM-61A data sheet: Sensitivity –35±4dB (0db = 1V/pa, 1kHz) Impedance Less than 2.2 k Directivity Omnidirectional Frequency...
I think the shape of the holophone is a result of its design as a surround mic. I have yet to hear anything else than football games being recorded with one so...
I believe a hard surface is preferable. An absorptive surface will "remove" the reflection and the pressure zone will more or less disappear – so at least...
There is a general rule of thumb that's been found to work pretty well. 1K of resistance for each volt. So 12 volts means around 12K, or two 5K6 for the...
... I have a pair of garage-sale bowling balls that are awaiting time and energy to enter into the sphere of sphere-mic experiments. I'm planning to drill out...
Lars, You could perhaps make your own sphere by laminating (increasing diameter) circles of plywood with something like white glue. And if the circles were...
... plugging" a microphone could damage Q1 and Q2 without zener protection. ... The diodes also serve a subtle but more important function. They prevent the...
There are interesting things that you can do to with Linkwitz modified capsules. For example, you can get indirect access to the internal FET gate through the...
Hi Mike-- I wouldn't be surprised by your theory. I've been listening to some very close, violent, under-ice fissures creating very low frequencies tonight....
... I need very low noise and proven performance under the worst weather conditions. However unlikely it may seem, the NT2000's have proven to be more weather...
Hi Lars-- Thanks for the insights! I feel pretty confident that hard and smooth is best. Seems to move the "lifted" frequencies up and smooth out harmonics a...
... This is not a requirement i had in mind but it will of course have priority over almost everything else. ... You should experience more gain in the...
Hello everyone. I'm relatively new here. I have found this forum very educational and interesting and hope you can advise me on a query I have. I've seen the...
Hi, Ive used the SPM0204 and SPM0208 or 5 models with a Zoom H2 and Edirol R09HR, both use plug in power. Those mics are not so good noise wise but quite small...
... specific to the actual model of capsule being discussed. I wonder if I am correct in this. <http://forums.minidisc.org/index.php?showtopic=12939> Yes. Why...
... Knowles likely uses the newer CMOS IC's in their mics similar to the ones from National and ADI. The situation is a lot different than the JFET 3-wire...
No doubt it varies from model to model, but at least some of Knowles hearing aid microphones use a MOSFET instead of a JFET. Some of the documentation which...
i got a set of C-2s and they are electrets, NOT true condensers, i think what they meant to say was it was an 'actual' condenser not a true condenser, maybe...
Andy has uploaded new samples: http://www.andrewsimpson.pwp.blueyonder.co.uk/DECCA%20TREE%20REPORT.PDF First clip, 30 seconds and Neumann U89 sounds...
I'm pretty sure the CAD C195 uses the TSB140 capsule. Not sure about the TSB165... possibly the AT 2020 uses it, but I've never had one to take apart myself. ...
A walk-through of the Rode microphone factory in Sweetwater Australia. Sound on Sound magazine. August, 2005. Peter Freedman http://tinyurl.com/848bx3 There is...
... Hi Nick, The earlier exemples of the Behringer C-2 was modified by Nico in Holland. http://tinyurl.com/b2d4v5 They had a dramatic roll-off at lower...
I was thinking the dominant mic distortion is second order. One might be able to tune out the distortion of a test speaker using a small DC current to walk the...
... I was thinking the dominant mic distortion is second order. One might be able to tune out the distortion of a test speaker using a small DC current to...
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