k1 speaker output wimpy

[AF6NI]

I just purchased this K1 used. I have had others in the past, but this is the first with the battery option. It seems as though the audio from the speaker is no where near what I remember on other k1's. Is this common with the speaker on the case for the battery option?

[Don Wilhelm-4]

I would not call it "wimpy", but that smaller speaker used with the
battery option is a bit on the "tinny" side.
Refer to the KBT1 instruction manual and check to be sure the speaker
has the little foam ring and that it is inserted properly.

Another point with that internal battery option - I have seen some who
have shorted out the batteries by placing the battery holder in 90
degrees from the way it should be - the length of the batteries goes
from the front to the back *not* side to side.

73,
Don W3FPR

On 4/19/2012 12:02 PM, af6ni wrote:
> I just purchased this K1 used. I have had others in the past, but this is the
> first with the battery option. It seems as though the audio from the speaker
> is no where near what I remember on other k1's. Is this common with the
> speaker on the case for the battery option?
>
>
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[AF6NI]

Thanks. Glad its not me!

[Andrew Moore-3]

If I remember correctly, the speaker is also very sensitive to distortion
of its metal frame (and therefore cone) if you tighten down the nuts too
much. You may have already tried this but try backing them off and
readjusting them so they're "finger tight" and no more. If things rattle,
tighten down a little more.  Worth a try anyway.

--Andrew, NV1B

On Thu, Apr 19, 2012 at 12:02 PM, af6ni <[hidden email]> wrote:

> I just purchased this K1 used. I have had others in the past, but this is
> the
> first with the battery option. It seems as though the audio from the
> speaker
> is no where near what I remember on other k1's. Is this common with the
> speaker on the case for the battery option?
>
>
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[Don Wilhelm-4]

Andrew,

That is true for the standard speaker, but with the KBT1, the speaker is
changed to a smaller one that has no mounting screws, it just sits with
its magnet settled into the hole in the battery bracket - it needs to
have a foam washer around its magnet to kee3p it from creating "rattlie"
noises.

73,
Don W3FPR

On 4/20/2012 9:16 PM, Andrew Moore wrote:

> If I remember correctly, the speaker is also very sensitive to distortion
> of its metal frame (and therefore cone) if you tighten down the nuts too
> much. You may have already tried this but try backing them off and
> readjusting them so they're "finger tight" and no more. If things rattle,
> tighten down a little more.  Worth a try anyway.
>
> --Andrew, NV1B
>
> On Thu, Apr 19, 2012 at 12:02 PM, af6ni<[hidden email]>  wrote:
>
>> I just purchased this K1 used. I have had others in the past, but this is
>> the
>> first with the battery option. It seems as though the audio from the
>> speaker
>> is no where near what I remember on other k1's. Is this common with the
>> speaker on the case for the battery option?
>>
>>
> ______________________________________________________________
> 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
>

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[k6dgw]

On 4/20/2012 7:29 PM, Ron D'Eau Claire wrote:

> When the cone moves forward on a bare speaker, the air pressure created
> simply moves around the edges and fills the partial vacuum created behind.
> The end result is no sound pressure waves leaving the speaker. The only
> waves created are those high enough in frequency that the outer part of the
> speaker acts as a self-baffle, leaving only a small center portion of the
> speaker to produce a sound pressure wave.

And Ron has just described the plastic-cased "kitchen radio" of the 50's
that my Grandma listened to "The Guiding Light" on.  No lows, all highs.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

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