[Icom] IC-775DSP and Heil Proset Plus IC

[Igor Sokolov]

Impedance matching... and BTW is Heil an electret mike? If not, do you use
separating capacitor? If it is then what is the voltage the mike specified
for?

Igor, UA9CDC


> Hi all!
>
> I really don�t know what to do. Now I have big problems.
>
> I were in the U.S. a couple of weeks and got a Heil Proset Plus IC with me
> back. The thing is, that it sounds awfully. Well I am not sure it is the
> headset or the IC-775DSP or the combination of the two (or me???).
>
> I begin with the IC-element. There seem to be a lot of low-mid, more than
a
> lot. Some real bass, but not to much compared to low mid. There is not
much
> high-mid  and absolutly no treble what so ever. The settings are "Tone" 12
o
> clock. DSP: Low 200 and high 2,9 (highest possible). Drive is 12 o klock
and
> micgain is between 11 and 12. COMP is on. The sound is undefined, like
> talking into two empty tins with a string between. Just the low-mid seem
to
> bee there. If I talk just infront of the opening of the mic-element there
> seem to be some high-mid but not that much. If I talk the least beside,
> above or below the element there is only low-mid and it sounds as I have a
> clothes peg attached to my nose.
>
> With the HC-4 element it gets better with some more high-mid but still no
> treble, and the level is to low to make the VOX to work reliable.
>
> I have a SM-20 deskmike. It sounds much better with bas to high mid, but
it
> could use some more treble. Gain is no issue as it has the amp. I use 40
to
> 45% on the mic.
>
> I have a handmike, a ICOM HM-15 I think. It has the standard ICOM electret
> condeser mic element. It sounds the best. Full range bass to treble. Not
as
> much treble as my TS-850 with hi-boost and compressor, but enough to make
> local QSO's commendable.
>
> Now back to the Heil IC element. If I put "Tone" to maximum, talk just
> infront of the element, and switch of PSN on TX I get rid of some of the
> "tin to tin" comunication sound, but then it is only narrow mid-mid. It
> sounds very boring. Not good for DX and not enjoyable for local QSOs.
>
> One could think there is a problem with the Heil IC element, but why is
the
> HC-4 also the same and even the SM-20 has the same tendency? If the radio
is
> broken, why is the hand mike ok?
>
> I am so confused that you have�nt heard of it before!
>
> Please, any help is appreciated!
>
> /Anders
>
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