I use the circuit that is discussed and pictured with schematic on
page 67 of the November QST. The mic capsule should be (that is I am
guessing from experience with these things) capable of taking somewhere
between 2 and 15 volts. This is a hugely typical value for these little
electret mic capsules.
YOU WANT... BIAS VOLTAGE that these use is between 2 and 15v -
typically a sound card produces about 5 volts.
YOOU DO NOT WANT PHANTOM VOLTAGE OF 48 V.
Check the White Papers on the Shure web site, www.Shure.com
and it will explain the difference.
I have tried the method described on Page 67 of the Nov. QST with
success. Many others have told me this works well.
I am BIASED... because I wrote the piece in QST Magazine.
--------------------- K8JHR ------------------------------
On 12/14/2013 7:50 PM, Phil Sikes wrote:
Hello to the group. I just picked up one of these headsets and I must say
they are very comfortable. Incorporating them into my Orion II station is
going to be nice. I just have a couple of questions of anyone else using one
of them. First, did you make your own pad for the mike audio or use a
commercial version? If home brew, what did you use? Secondly, I would like
to dump the battery box that brings power to the electrets element (2xAA's)
and make use of the +10vdc at the mike connector. Yamaha wanted my first
born, complete email list and just about every other piece of info on me
just to ask a question on how much voltage the element could take. One
person did ask about using 48v phantom power and was told no that the max
was 15v. If that is the case then
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