[TenTec] 707 Mike

[Rsoifer at aol.com]

Tnx for the info.  Further experimentation shows that I can back off  the 
mic gain to 55 or 60 on SSB, but it still wants 75 or so on AM.  If I  go 
past +12 dB of H/W mic gain, it begins to sound distorted, to my ears  anyway.  
One more thing I found is that setting the bass roll-off to  80 Hz, as 
recommended, produces some popping sounds, again with my voice.   Raising the 
roll-off freq to 150 Hz cures the problem.
 
Anyone else have experience with the 707 mike?
 
73 Ray W2RS  
 
 
In a message dated 6/30/2010 3:41:00 A.M. GMT Standard Time,  
jruing at ameritech.net writes:

That  makes perfect sense to me, as I believe your new microphone has a 
dynamic  type of microphone element, whereas you indicate your previous 
microphone  has an electret condenser type element.  Dynamic mics 
typically have  a substantially lower output signal strength (sometimes 
referred to as  "open circuit voltage"  or "open circuit sensitivity") 
than electret  condenser mic elements, which typically run substantially 
hotter - and  many computer type electret condensers run quite hot.

I would likely  boost the hardware gain a bit more, so that I could run 
the rig mic gain  at about 50 % -  I am under the impression the rig AGC 
likes it  better that way.   I will leave it to others to explain better  
than I why, but that is what seems to work best in my  experience.

This is consistent with other applications - I used to test  microphones 
and write product reviews for use with speech recognition  software and 
encountered the same thing as you find with your  rig.

Hope this helps some.

=========================   K8JHR  ==============================



On 6/29/2010 8:10  PM, Rsoifer at aol.com wrote:

> I have H/W mic gain set to 12 dB and  the front panel MIC  set to 75.  
With
> the 706 condenser  mike, I set H/W mic gain to 6 dB and  front panel MIC 
to
>  60.  I have a rather soft speaking voice, but the 707  seems to need  a 
lot
> more gain than the 706.
>
> Does anyone else have  experience with this to share?

>  _______________________________________________

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