Check out this cool article by Aaron Lyon over at Matthew Mcglynn's outstanding website RECORDINGHACKS.COM : http://goo.gl/E9YlO Seven sub-$200 microphones are...
16390
recordinghacks
Dec 1, 2011 6:35 pm
... In hopes of making this feature even more useful & interesting for the micbuilders crowd, I'll be updating the mic profile pages of the 7 contenders to...
16391
Richard Lee
ricardo_lee
Dec 1, 2011 6:52 pm
... TSC-1 & TSC-2 are electrets so you don't need to mess with polarizing voltage. You can generally believe their sensitivity specs. eg TSC-2 -35dB ref...
16392
umashankar
umashanks
Dec 2, 2011 12:23 am
sorry richard, but tsc 1 and 2 are true condensor, and not electret, so you have to apply a polarisation voltage. (i bought a couple of tsc 1s) Â umashankar i...
16393
ricardo
ricardo_lee
Dec 2, 2011 7:39 am
... Any idea what their -35dB wrt 1V/Pa is based on?...
16394
captainvideo_007
captainvideo...
Dec 5, 2011 12:57 am
All, I recently acquired a Keithley picoamp ammeter, would it be possible to directly measurt the output of electret capsules through the 1G resistor into the...
16395
Jerry Lee Marcel
jerrylee.marcel
Dec 5, 2011 1:30 am
To my knowledge, Keithley picoammeters do only DC measurements. The output of a condenser capsule (electret or externally biased) is AC. ... [Non-text portions...
16396
ricardo
ricardo_lee
Dec 5, 2011 10:06 am
The latest diyaudio newsletter has a rave review of a $89 pocket oscilloscope by Jan Didden, editor/publisher of Linear Audio. "The base model I got has a 1MHz...
16397
userno232000
Dec 5, 2011 4:15 pm
... Which model? The 610C can be used in amplifier mode 10^15 Ohms in parallel with 20pF input with frequency responses up to 40kHz depending on gain. The...
16398
Sergei Steshenko
sergstesh
Dec 5, 2011 5:57 pm
A 1Mhz oscilloscope is not worth spending money on. Sorry. I encountered an tens MHz parasitic generation in my pretty simple audio circuit - I'm lucky t have...
16399
userno232000
Dec 5, 2011 7:06 pm
... Mike Rooke asked a related question and I thoughtI would clarify the above, because I think it's an important point. Acoustic pressure does work on the...
16400
Jerry Lee Marcel
jerrylee.marcel
Dec 5, 2011 7:33 pm
I don't know if the real question is the charge value, or the equivalent voltage an externally-biased capsule of identical parameters would need. Sure, there...
16401
userno232000
Dec 5, 2011 8:01 pm
... Th original questions were only concerning the DC voltage. I didn't think it was necessary to differentiate between pushing and pulling either. The...
16402
archieaa1
Dec 5, 2011 8:19 pm
Hello Everyone I disagree. A hand held 1 meg scope can be useful but, If the question is, "is that all the scope I need?", the answer is likely no. You should...
16403
Mike Rooke
picnet2
Dec 5, 2011 10:30 pm
All I know is the stuff I use melts when sputtered with gold, or carbon and when its finally placed in the SEM with the beam voltage cranked up "to 11" it...
16404
userno232000
Dec 5, 2011 11:50 pm
... The beam is moving electrons, their deflection in a static E field is easily calculated. So I guess this is a way to measure the field, albeit a little...
16405
tramonkaiser
Dec 6, 2011 1:42 pm
I'm curretly planning on building a binaural head with wm-61a capsules. I want to power these with P48 power. I've come across a schematic for a P48 adapter...
16406
e-mail jillian.bowman
jilly.bowman
Dec 6, 2011 3:41 pm
The capacitors C1 & C4 should be electrolytic types or tantalum types with a 16 volt minimum working voltage. please note that the symbols are upside down but...
16407
Jerry Lee Marcel
jerrylee.marcel
Dec 6, 2011 4:01 pm
... Someone recently posted his test results that showed a definite increase in sensitivity vs. voltage supply. Fortunately the sensitivity grows less rapidly...
16408
jilly
jilly.bowman
Dec 6, 2011 4:10 pm
16409
vivaldivi
Dec 6, 2011 4:12 pm
Hi mates, my goal is to feed a dslr camera mic input with live audio from H2n line/headphones-out. I tried but got serious clipping and distortions, so it...
16410
Jerry Lee Marcel
jerrylee.marcel
Dec 6, 2011 4:32 pm
The headphone output is generally quite low (<32ohms) and the mic input is higher than 600ohms, so there's some latitude with the values. L-pads are very...
16411
vivaldivi
Dec 6, 2011 5:16 pm
Thank you Jerry, I've just found quite different values on the page http://www.epanorama.net/circuits/line_to_mic.html...
16412
Sergei Steshenko
sergstesh
Dec 6, 2011 6:29 pm
They are not quite different. Rather, they are intended for people having difficulties dealing with other than power of 10 numbers ;-). Regards, Â Sergei....
16413
Jerry Lee Marcel
jerrylee.marcel
Dec 6, 2011 7:42 pm
@vivaldivi, Re: "I've just found quite different values on the page" You asked for 25dB attenuation. With 10k/100R, it's 40dB. ... [Non-text portions of this...
16414
juliankaus
Dec 6, 2011 8:16 pm
True, the noise this circuit shows is the best it can get. i´ve use it a lot, WM-61A is not precisely a quiet mic, i never got to measure nothing lower than...
16415
Eric Benjamin
ericbenjamin2
Dec 6, 2011 8:48 pm
... This sounds like a very nice way to go. But you might want to see if you can get some Primo EM-158 capsules, which are approximately the same dimensions...
16416
vivaldivi
Dec 6, 2011 9:51 pm
Sorry, it seemed to me much different but I am really a newbie in terms of electronics and circuits......
16417
ricardo
ricardo_lee
Dec 6, 2011 10:46 pm
... ...
16418
vivaldivi
Dec 6, 2011 10:51 pm
Jerry, I've found that output impedance of my H2n is over 10 kohms, does it change anything? I mean values of the resistors you kindly gave me?...
