I figured a set of headers with 4 values of fixed gain 10db 20db... that you could choose with a plastic shunt... And another jumper to turn on power... No...
... this ... Thanks very much! (sorry for the late reply) Im probably not going to start for another 2 weeks (because I'm moving country!) but then I most...
I'm not looking to set up shop here, but I'm going to get a few more TSB-165A capsules modified and wondered if anybody was interested in buying some. I'm not...
Hey I am new to mic building and want to make some small mics to use for live recording and other applications. I was wandering if anyone could sell me 2 sets...
The capsules are pretty cheap, getting them matched would probably be pricey unless another hobbyist has some extras matched up. Probably would be cheapest...
Finding a non electrolytic capacitor at 10uF is proving difficult here in Vancouver... I guess I'll have to order some... boo hoo. What is different about an...
Pietro M.P. Sammarco
pietro79@...
Oct 12, 2005 11:38 pm
4684
... here in ... the author ... itching to ... A 10uF cap is pretty big. You could probably get away with 2.2uF, and those are easy to find as poly caps, eg.,...
sorry, I found exactly what I was looking upon speaking with a friend... the following answers the questions I had about capacitors... interesting and plain!...
Pietro M.P. Sammarco
pietro79@...
Oct 13, 2005 5:09 am
4686
Hi Guys, Im a new member. I am a sound design student at the USMT. Im starting on a project that involves recording hi frequency material. (Up to 80 Khz) and...
For most cases, Richard should be right, but it depends on where you plug your mic into! You should take a look at the input impedance of the next stage (mic...
What exactly are you recording that requires the extremely high SPL spec? Jump jets and close proximity explosions? :-) I record some pretty loud sources, and...
OK, I'm considering getting some good condenser caps, something like the AKG CK61/2/3 series and building my own powering circuit (following the Dorsey...
Richard, The point of polarizing at 62 V instead of 48 V is that you get 62/48 or 2.2 dB more sensitivity. If the input noise of the elctronics is a...
... Thanks for the suggestion. I haven't decided yet whether to do this, but the CMOS inverter sounds like a good idea. I think my first project is going to...
Use the resistor values that you like and increase the bypass capacitor. I would not mess with diodes. As an alternative, split the feed to each side by for...
Hi, First of all, thanks to the help I received when I posted before. Second, I have ordered some Panasonic WM-55A capsule's and got them working, sort of....
Does the op-amp circuit work with other inputs? I don't think I've had a capsule ever do what you described - either it works fine or not at all. -Scott ... ...
... I.e. incrase the 10 uF with 100 nf in parallel that is already there? I guess more HF-specific film capacitance is needed? 0,150 uF polypropylene? ... ...
Hmmm... can you draw up a schematic of some sort? There are a lot of possibilities for how to hook up an op-amp. -Scott ... -- ... And you'll visualize not...
... Almost sound like a DC-blocking cap in series with the capsule instead of parallel. Enough current will flow to bias the capsule while the capacitor is...
Tie two 100ohm resistors together or even 1k and connect the common point to the battery. To each of the other end of those resistors connect your 10k ...
... Hey, that's a good theory - and it makes sense that the circuit maybe had a cap thrown in to buffer the battery or something. I've made mistakes like...
Hello Bertho, ... point to ... your 10k ... of the ... since ... each ... Thanks, that clarifies a lot! The value of the capacitor, I use the 1K or 10K...
I added a schematic in the files section under my username. There are no caps anywhere except on the power rails. I know the problem is with the mic capsule...
... Got the schematic ... where's the center ground reference for the opamp's input? The inverting input is only connected to the output. Wouldn't that drive...
... I'd think that you need a DC blocking capacitor between the capsule and the opamp input... and as Mike said, where's the ground reference to the + input? ...
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