yes there are four wents on the cylinder. at the moment they are 6 mm but i am ready to expand them, if the sound needs it. i have just heard the mic first...
7284
kipsusskrybeletas
kipsusskrybe...
Jun 28, 2007 10:02 pm
Which is somewhat weird. Given the capsule's resistance is <2,2k, load resistance is also 2,2k We get 2V/4,5k=0,4mA at 2V rails, what about 10V? ... saw 500uA....
7285
Robert Munger
bob98009
Jun 28, 2007 10:50 pm
I'm thinking you want to keep that current at 500uA, regardless of voltage. vary the outlying R's or use a uL78 series TO92 type regulator for the five volt...
7286
soongsc
Jun 28, 2007 11:52 pm
I guess WM60 and WM61 are different? ... load ... ~250uA. ... never...
7287
rhcamp@...
rhcamp99
Jun 29, 2007 12:03 am
It is certainly possible. Depends somewhat onthe FET selected. I am looking up more old data -- stay tuned! Dick ... Date: Thu, 28 Jun 2007 23:52:51 -0000 ...
7288
Richard Lee
ricardo_lee
Jun 29, 2007 1:18 am
... can find the article by Smith! I had a look in the fourth edition, but couldn't find anything about shotgun microphones. I think Eric is referring to the...
7289
qw1209po
Jun 29, 2007 3:13 am
I was reading up on this new cheap Superlux MS mic: http://news.harmony-central.com/Newp/2007/Superlux-E531-Ships.html I was wondering about the 90/120 degree...
7290
umashankar mantravadi
umashanks
Jun 29, 2007 3:24 am
i have not seen or heard this microphone, but i know others of its ilk. first off, it is worth getting rid of the transformer which is used to generate the m/s...
7291
jdgoguen
Jun 29, 2007 4:06 am
Thanks to all who responded. I couldn't find a design in the Radiotron Handbook, but I did find useful references there to early designs developed in the...
7292
Robert Munger
bob98009
Jun 29, 2007 4:18 am
there is only about two ways to do that. mechanical or electronic. i'll scope that mic out and see if it is determinable by inspection ... ...
7293
Robert Munger
bob98009
Jun 29, 2007 4:25 am
as a transformer guy, i must take "umbrage" (sp?) I have one sample from some we did for prosonus that is 17-29K flat with a 1/2 dBbump at 20K, with plenty of...
7294
Robert Munger
bob98009
Jun 29, 2007 4:43 am
google "calrad" and look at thier part number 10-4 (i think) they have a simple shotgon done with plasti tube. a friend has one i got him (private eye) and he...
7295
Joseph Diliberto
joeydusk
Jun 29, 2007 5:18 am
Hope you feel better Mr. Munger! JD Robert Munger <audisar@...> wrote: as a transformer guy, i must take "umbrage" (sp?) I have one sample...
7296
umashankar mantravadi
umashanks
Jun 29, 2007 7:37 am
the spelling is correct. i do not wish to insult all transformers. i prefer transformer input mic preamps myself. but cheap microphones, especially the m/s...
7297
umashankar mantravadi
umashanks
Jun 29, 2007 8:24 am
i did not respond immediately because i was searching for an article i think i have on my hard disc describing shotgun design principles. you are basically...
7298
Scott Helmke
scott_helmke
Jun 29, 2007 11:59 am
Looks like a knockoff of the Sony MS907, which is a very nice mic for casual stereo recording. I did take my MS907 apart a while back, and there's nothing...
7299
Edu Silva
edusilva2
Jun 29, 2007 12:45 pm
Hi Interesting patent from Audio-Technica, hope this helps: http://www.freepatentsonline.com/4789044.html Edu http://audiolist.org ....
7300
jdgoguen
Jun 29, 2007 2:43 pm
Following up on related patents, I found US 3095484, which I will deposit here as a .pdf. It has the a very good explanation of the prinicples and shows a...
7301
jdgoguen
Jun 29, 2007 2:47 pm
Sorry, the .pdf is too large to upload. Use the free patents access if you want to look! Jon...
7302
jdgoguen
Jun 29, 2007 2:57 pm
Umashankar, Is there an acoustic path around the capsule in the 416, or is it mounted tightly in the tube? A path around the capsule perimeter would make sense...
7303
Ken Seger
kenseger2004
Jun 29, 2007 3:27 pm
A question, perhaps a stupid one, has anybody made a shotgun mic based on electrical rather than mechanical filtering? Ie., if you had 4 cardiod elements in a...
7304
Robert Munger
bob98009
Jun 29, 2007 3:50 pm
Don't worry about insults, i was married to the wicked witch of the north! ... _________________________________________________________________ Don’t miss...
7305
umashankar mantravadi
umashanks
Jun 29, 2007 4:04 pm
not really. the capsule itself is quite long and is bolted to the pcb carrier. the other end is the xlr connector. the whole thing is held in place by a single...
7306
jdgoguen
Jun 29, 2007 4:19 pm
Essentially yes. There is a lot of current work on steerable (or adaptive) microphone arrays. The simplest case for a fixed directional array is simply a...
7307
Robert Munger
bob98009
Jun 30, 2007 12:30 am
I have to chuckle a little as i started on this concept about two years previous to having the stroke, so the work stopped at that time. there are some things...
7308
Robert Munger
bob98009
Jun 30, 2007 4:11 pm
Oh yes i did! as i recall it was pg 755 ... _________________________________________________________________ Picture this – share your photos and you could...
7309
Scott Helmke
scott_helmke
Jun 30, 2007 4:16 pm
... Which edition, though? Maybe you could scan in the page(s) and post somewhere? -Scott -- ... And you'll visualize not taking any chances But meet them...
7310
Robert Munger
bob98009
Jun 30, 2007 4:31 pm
mine is the fourth edition, don't have a scanner. the other way of controlling pattern is with ports. use the image function on yahoo. as i recall the first...
7311
Aaron Heller
ajh94002
Jun 30, 2007 5:45 pm
Hi folks, There's a complete scan of the 4th Edition of the Radiotron Designer's Handbook online at http://www.oldradioz.com/manuals/rdh4/ The section on...
7312
Dale
dtchisholm
Jun 30, 2007 6:28 pm
Sounds like an interesting, somewhat on-topic question from another group. ... wrote: The device will make use of a 2" ultrasonic piezoelectric transducer for...
