K2 SSB TX audio question

[Eddy]

K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports!


So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy.......so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much.

As always, thanks for everyone's help!

73......ed

k6sdw
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Don Wilhelm-4]

Ed,

Change 2 capacitors on the KSB2 board.  C34 to 0.47 uF and C32 to
something in the 3300 pF to 5000 pF range.

I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone
and it sounds good with those changes made.

73,
Don W3FPR

On 8/12/2013 6:18 PM, Eddy wrote:

> K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also did the KI6WX wide-band mod years ago. When on LSB using the elecraft recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports that there's too much base in my audio and hams find it hard to hear what I'm saying, but when I turn off compression I then get really good audio reports!
>
>
> So, for the K2 wizards out there, as long as I leave the compressor off, my hams friends are happy.......so, I'm wondering why turning on compression increases the base response and if there's a way to improve audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio filter bandpass but doesn't do much.
>
> As always, thanks for everyone's help!
>
> 73......ed
>
> k6sdw
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[KC6CNN]

CONTENTS DELETED

The author has deleted this message.

[KC6CNN]

CONTENTS DELETED

The author has deleted this message.

[Don Wilhelm-4]

It reduces the low frequency energy getting to the speech compressor on
the KSB2 board.

73,
Don W3FPR

On 8/12/2013 9:59 PM, Gerald Manthey wrote:

> Don
> Changing those two caps changes the audio or band width of the signal?
> Thanks
> Gerald.
> On Aug 12, 2013 6:41 PM, "Don Wilhelm" <[hidden email]> wrote:
>
>> Ed,
>>
>> Change 2 capacitors on the KSB2 board.  C34 to 0.47 uF and C32 to
>> something in the 3300 pF to 5000 pF range.
>>
>> I usually run SSBC at 3-1 and SSBA at 1 with the Elecraft MH2 microphone
>> and it sounds good with those changes made.
>>
>> 73,
>> Don W3FPR
>>
>> On 8/12/2013 6:18 PM, Eddy wrote:
>>
>>> K2 serial number 3600+ using the Heil hand mic that Elecraft sells, also
>>> did the KI6WX wide-band mod years ago. When on LSB using the elecraft
>>> recommended settings of SSBA of 2-1 and SSBC of 2-1, I get lousy reports
>>> that there's too much base in my audio and hams find it hard to hear what
>>> I'm saying, but when I turn off compression I then get really good audio
>>> reports!
>>>
>>>
>>> So, for the K2 wizards out there, as long as I leave the compressor off,
>>> my hams friends are happy.......so, I'm wondering why turning on
>>> compression increases the base response and if there's a way to improve
>>> audio when using SSBC 2-1? I've used Spectrogram to slightly adjust audio
>>> filter bandpass but doesn't do much.
>>>
>>> As always, thanks for everyone's help!
>>>
>>> 73......ed
>>>
>>> k6sdw
>>> ______________________________**______________________________**__
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/**mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>>> Help: http://mailman.qth.net/mmfaq.**htm<http://mailman.qth.net/mmfaq.htm>
>>> Post: mailto:[hidden email].**net <[hidden email]>
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>>
>>>
>> ______________________________**______________________________**__
>> Elecraft mailing list
>> Home: http://mailman.qth.net/**mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>> Help: http://mailman.qth.net/mmfaq.**htm<http://mailman.qth.net/mmfaq.htm>
>> Post: mailto:[hidden email].**net <[hidden email]>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Don Wilhelm-4]

That sounds like the BFOs for the OP1 filter in SSB FL1 are not aligned
properly.  See part 3 of the K2 Dial Calibration article on my website
www.w3fpr.com

73,
Don W3FPR

On 8/12/2013 10:02 PM, Gerald Manthey wrote:
> The reason I ask is that I get reports of very narrow audio when monitored
> by someone with a band scope. They saw between 2 and 2.5 , where most
> everyone else runs 3 to 3.5
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html