David,
Glad somebody else is experiencing this. I tried plugging in a set of
Heil BM-10 earphones into the K3. It was if the leads were shorted.
I sent them back to Heil who declared them within spec. I tried an el
cheapo computer 32 ohm headset with only slight improvement.
Odd thing is the el cheapo headset had plenty of volume when plugged
into the computer for it's intended use.
In general the earphones with the larger headphone size produce more
volume. I finally ended up with a plantronix headphone set which has
adequate, but not stellar volume.
In all fairness the Heil BM-10 didn't work too well on an IC-706 either.
Somewhere there is now a disconnect between headphone manufacturers and
rig manufacturers. I suppose there may be some regulations or
guidelines that may be getting in the way too. However, for many of
us, it's too late to protect against somewhat diminished hearing. We
need something which puts out the volume needed..
Note: My recollection on using a Heil BM-10 perhaps 10 years ago was
that it was just fine in the volume area. Two factors come to mind:
1) It was used with an older radio that had lots of audio output
2) I'm now 10 years older.
Maybe it is both of the above.
Perhaps Elecraft can somehow provide more earphone volume. The
speaker output will knock your socks off.
73 de Brian/K3KO
David Cutter wrote:
It has recently astonished me just how deaf some headphones are. In
my work I was given aircraft headphones that needed 2W to get the same
audio output as our own make that needed about 20mW. That quick test
with the spl meter needs to be repeated on a calibrated jig and I'll
be taking my ham phones in to get them checked. I'll post the results
here.
David
G3UNA
----- Original Message ----- From: "Jim Brown"
<[EMAIL PROTECTED]>
To: "Elecraft Reflector" <[email protected]>
Sent: Monday, July 14, 2008 8:01 AM
Subject: Re: Re: [Elecraft] K3 #1037 in IARU contest
On Sun, 13 Jul 2008 16:49:25 -0700, Fred Jensen wrote:
Slightly different subject, I wouldn't mind at all if the K3 had more
audio available in the headfones from both the monitor and sidetone.
Fred,
There's an AF Gain setting in the Config Menu. Check that it's set to
"HI." If you need more, maybe I can help you find headphones with
higher
voltage sensitivity.
Jim
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