[Elecraft] K3s Internal Speaker

[Steve Ellington]

Mike
Trust me....I was very gentle, especially the second time around.

The cardboard trim around the speakers is thicker than the fiber washers
therefore the speaker ears do tend to bend.
The washers should be thicker or the speaker ring should be thinner.

Anyway....Leaving bolts this loose isn't good construction practice anyway.
Surely a better method of attaching a simple speaker to a piece of metal
can be found.

On Sat, Dec 5, 2015 at 4:35 PM, <ac5p at sbcglobal.net> wrote:

> I have an older K3 and a spare speaker (part #E850300).  Its hard to
> imagine flange being bent with little 4-40 screws, BUT, in my assembly
> manual p52, last step above Figure 74,it states in BOLD lettering, "Do not
> tighten the screws enough to bend the speaker flanges!"
>
> IF this were not an issue sometime in the past,  one wonders why such a
> warning would be stated in bold letters?     Otherwise I find the little
> speaker to be as Wayne describes in his reply.   Steve could you really be
> the first out of so many thousands to actually bend the flanges?
>
> 73,
> Mike
> AC5P
>
>
>
> On Saturday, December 5, 2015 2:11 PM, Wayne Burdick <n6kr at elecraft.com>
> wrote:
>
>
> Hi Steve,
>
> Sorry to hear about this. I've never heard this complaint before (and
> there are tens of thousands of these speakers in use, in both the K3 and
> K3S). The frame should not bend if the correct fibre washers are used and
> the hardware is not over-tightened. I'll check with our manufacturing lead
> to see if the wrong ones were shipped.
>
> I'll also check with our tech writer. Perhaps the instructions could be
> clarified.
>
> The internal speaker is certainly of high quality, so I hope you can get
> one installed (I'm sure customer support will send another, given your
> issues). It has excellent sensitivity (95 dB SPL, due in part to the very
> large shielded magnet) and a wide frequency response range. Given the large
> top cover mounting surface, the internal speaker is quite loud, with a low
> natural resonance point.
>
> 73,
> Wayne
> N6KR
>
> On Dec 5, 2015, at 11:59 AM, Steve Ellington <steven4lq at gmail.com> wrote:
>
> > I've made 2 attempts to install a speaker in my new K3s but they bend
> like
> > butter and distort. I was very careful to use the fiber washers and to
> not
> > over tighten the bolts. The frame of the speaker can bent with 2 fingers!
> > I've never seen such a flimsy speaker.
> >
> > I had a brand x speaker in the junk box that worked great but I wanted it
> > to be original especially since the speaker is necessary to hold down the
> > sub receiver's shield. The junk speaker worked fine while I awaited a
> > replacement but the new  replacement did the same. Basically it is junk.
> > I wonder if they washers they sent are too thin?
> >
> > I never use the internal speaker anyway but feel like it should at least
> > work.
> >
> > Has anyone else noticed this? Otherwise I love the K3s!
> >
> > Steve N4LQ
>
>
>
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