Bob and Jim have excellent points.
There is one advantage for the electret mic compared to a dynamic
mic. Electrets are generally 26 dB "hotter" than a dynamic mic
and thus are much more resistant to common mode RF feedback and
magnetic coupling. However, that assumes the transceiver is
designed for the higher input level and properly reduces gain
before the mic gain control.
Mics of any kind - dynamic or condenser/electret - with wide frequency
response are completely wasted for amateur radio (or any communications
application). You really want a clean 200 Hz - 4 Hz response. Lower
frequencies cause distortion and waste power, higher frequencies are
simply lost in the "channel noise".
Like Bob and Jim, I spent my professional life in the recording and
broadcast industries. Amateurs waste far too much on over spec'd
microphones and fancy "brand name" advertising campaigns.
73,
... Joe, W4TV
On 6/11/2017 9:29 AM, Bob McGraw K4TAX wrote:
On Jim's points, I fully agree. It seems hams are prone to over
complicate a rather simple issue. There's more than adequate mike gain
in the K3S, thus I find no technical reason for the use of an external
preamp. The internal EQ of the K3S again is most adequate to correctly
tailor communications audio, even ESSB.
I've found mike technique to be a very important factor in good quality
audio. From personal observations, many hams have and use poor mike
technique. The mike-to-mouth position is most critical and will vary
with different mikes.
Like Jim, I'm a retired recording studio engineer and a live stage
performance engineer. Nothing but experience and learning from the
experts will improve what you do.
73
Bob, K4TAX
On 6/11/2017 1:06 AM, Jim Brown wrote:
On Sat,6/10/2017 8:02 PM, Clay Autery wrote:
Customized large capsule condenser mic on a Heil PL2T boom using ONYX
Blackjack for power supply/control.
Sorry, but you guys are WAY over the edge on this. As a retired
recording engineer, I own a bunch of great large and small diaphragm
mics, both condensers and dynamics, that put these mics to shame, but
I wouldn't waste any of them in a ham station. I'm VERY happy with a
Yamaha CM500 since W6XU turned me on to it around 2009, at a fraction
of the cost. It's plugged straight into the rear panel mic jack of my
K3s (plural, not the new K3S). Any decent electret will work as well,
especially with the EQ built into a K3, K3S, KX3, KX2. Those large
diaphragm mics are great for when I'm recording a symphony orchestra
or a great jazz big band, but they are a waste in the ham shack.
73, Jim K9YC
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