K3 - Proset K2 Mic Frequency Response

[David Pratt]

In a message of 3 June 2008, <[hidden email]> said ...

 >Last week I posted a message asking for info about the frequency
 >response of the mic in the Proset K2. I didn't receive any replies
 >but I've now heard from Bob Heil that it's 40 Hz - 12 kHz.
 >
 >Just thought I'd pass it on in case it's useful to anyone.

Yes, Geoff, that is indeed very useful and interesting. In the absence
of a graph one has to assume that the response is substantially flat,
falling off by 6dB at 40Hz and at 12kHz.

73

--
David G4DMP
Leeds, England, UK
------


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[Don Wilhelm-4]

David,

As Jim Brown stated a day or 2 ago, just the frequency range is not
sufficient information.
The response curve used to be posted on the Elecraft website, and it was
*not* flat.

73,
Don W3FPR

David Pratt wrote:

> In a message of 3 June 2008, <[hidden email]> said ...
>
> >Last week I posted a message asking for info about the frequency
> >response of the mic in the Proset K2. I didn't receive any replies
> >but I've now heard from Bob Heil that it's 40 Hz - 12 kHz.
> >
> >Just thought I'd pass it on in case it's useful to anyone.
>
> Yes, Geoff, that is indeed very useful and interesting. In the absence
> of a graph one has to assume that the response is substantially flat,
> falling off by 6dB at 40Hz and at 12kHz.
>

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[Eric Swartz - WA6HHQ]

I've placed the frequency response chart for the MH2 and Proset-K2 on
the web site.
See:
http://www.elecraft.com/elecraft_mics.htm

73, Eric   WA6HHQ

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[Bill Steffey NY9H]

nice chart....
  looks like the results are from a Bruel & Kjaer.....

But can you explain what sort of "chamber" was used,
                   maybe it is a left over from the "psychedelic" days  ...

Shure Bros , AKG & Sennheiser use an  Anechoic...
(n. anechoic chamber is a shielded room designed to attenuate waves)

No sure what tests do you do in an "anabolic chamber"....but i don't
want to do the testing. Must be a Southern Illinois thing.
First saw this about 5 years ago in a CQ magazine review.

Guess you just can't always believe what a graph says....

bill


At 05:01 PM 6/6/2008, Eric Swartz - WA6HHQ, Elecraft wrote:

>I've placed the frequency response chart for the MH2 and Proset-K2
>on the web site.
>See:
>http://www.elecraft.com/elecraft_mics.htm
>
>73, Eric   WA6HHQ
>
>_______________________________________________
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[Bob-270]

Is it a chamber lined with well known high priced and overpaid athletes?

73,
Bob
K2TK

Bill NY9H wrote:

>
> nice chart....
>  looks like the results are from a Bruel & Kjaer.....
>
> But can you explain what sort of "chamber" was used,
>                   maybe it is a left over from the "psychedelic" days  
> ...
>
> Shure Bros , AKG & Sennheiser use an  Anechoic...
> (n. anechoic chamber is a shielded room designed to attenuate waves)
>
> No sure what tests do you do in an "anabolic chamber"....but i don't
> want to do the testing. Must be a Southern Illinois thing.
> First saw this about 5 years ago in a CQ magazine review.
>
> Guess you just can't always believe what a graph says....
>
> bill
>
>

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[Jim Brown-10]

Frequency response curve looks reasonable for a communications mic, but
at what distance was the curve run?  And what fundamental microphone
types are these mics -- omni, cardioid, hypercardioid, supercardioid,
bidirectional? VERY important.

Anabolic is a new one one me too!  :)  Most microphone measurements are
done in anechoic chambers.

I'm saving a copy of that graph to use in my lectures!

73,

Jim Brown K9YC

 On Fri, 06 Jun 2008 17:30:42 -0500, Bill  NY9H wrote:


>nice chart....
>  looks like the results are from a Bruel & Kjaer.....

>But can you explain what sort of "chamber" was used,
>                   maybe it is a left over from the "psychedelic" days  
...

>Shure Bros , AKG & Sennheiser use an  Anechoic...
>(n. anechoic chamber is a shielded room designed to attenuate waves)

>No sure what tests do you do in an "anabolic chamber"....but i don't
>want to do the testing. Must be a Southern Illinois thing.
>First saw this about 5 years ago in a CQ magazine review.

>Guess you just can't always believe what a graph says....

>bill

>At 05:01 PM 6/6/2008, Eric Swartz - WA6HHQ, Elecraft wrote:
>>I've placed the frequency response chart for the MH2 and Proset-K2
>>on the web site.
>>See:
>>http://www.elecraft.com/elecraft_mics.htm
>>
>>73, Eric   WA6HHQ
>>
>>_______________________________________________
>>Elecraft mailing list
>>Post to: [hidden email]
>>You must be a subscriber to post to the list.
>>Subscriber Info (Addr. Change, sub, unsub etc.):
>>http://mailman.qth.net/mailman/listinfo/elecraft
>>
>>Help: http://mailman.qth.net/subscribers.htm
>>Elecraft web page: http://www.elecraft.com

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[Pete Connors F5VNB]

CONTENTS DELETED

The author has deleted this message.

[Geoffrey Downs-2]

Dear Eric,

Many thanks for posting the frequency response chart. It doesn't seem to be
available anywhere else on the web - hence my original request to the
reflector (and Bob Heil) for a graph or any other info. The 40 Hz to 12 kHz
data I posted last week was all that Bob sent so I presumed it was more
or less flat over the range, which obviously it's not.

However, I'm wondering if the log frequency scale at the bottom is correct.
Should not the 1k line be 2k and the 4k line 5k?

Also if you look closely the "anabolic" word, it actually looks like
"anaboic", which makes it even stranger!

73

Geoff
G3UCK

----- Original Message -----
From: "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>
To: <[hidden email]>
Cc: "Elecraft Reflector" <[hidden email]>
Sent: Friday, June 06, 2008 11:01 PM
Subject: Re: [Elecraft] K3 - Proset K2 Mic Frequency Response

> I've placed the frequency response chart for the MH2 and Proset-K2 on the
> web site.
> See:
> http://www.elecraft.com/elecraft_mics.htm
>
> 73, Eric   WA6HHQ
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>

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