[Boatanchors] Speaker repair

[Dave Harmon]

Silkspan paper does not shrink unless it is wet with water and allowed to
dry.
Applied dry to a speaker cone with nitrate dope prevents shrinkage.
Works great....as long as the speaker doesn't belong to me.

Dave Harmon
K6XYZ[at]sbcglobal[dot]net
Sperry, Ok.

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Glen Zook
Sent: Sunday, January 15, 2012 4:03 PM
To: jfor at quikus.com
Cc: boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Speaker repair

Fact that the silkspan shrinks is the problem.  It works great for model
airplanes (in my younger days I built quite a few), but the very fact that
it does shrink when "dope" is applied could definitely cause physical
distortion to the speaker cone.  Then, the physical distortion could cause
distortion in the reproduced sound from the speaker.

Using a paper that doesn't shrink is, in my experience, a much better
solution.
 
Glen, K9STH


Website:  http://k9sth.com


________________________________
 From: J. Forster <jfor at quikus.com>
To: Glen Zook <gzook at yahoo.com>
Cc: "boatanchors at mailman.qth.net" <boatanchors at mailman.qth.net>
Sent: Sunday, January 15, 2012 2:59 PM
Subject: Re: [Boatanchors] Speaker repair
 
Once doped, I doubt water would do much. Planes I built with it are intact
after over 50 years.

-John

===============

> That paper was called "silkspan".  It worked better when it was 
> sprayed with water and then left to dry.  That pulled the covering 
> taught.  Then, "dope" was applied.
>
> I would be very hesitant to use this on a speaker because if the 
> humidity went up there might be a possibility of the paper shrinking 
> and distorting the speaker's cone.
>  
> Glen, K9STH
>
>
> Website:  http://k9sth.com
>
>
> ________________________________
>  From: J. Forster <jfor at quikus.com>
> To: mac <w7qho at aol.com>
> Cc: "boatanchors at mailman.qth.net" <boatanchors at mailman.qth.net>; Glen 
>Zook  <gzook at yahoo.com>
> Sent: Sunday, January 15, 2012 2:31 PM
> Subject: Re: [Boatanchors] Speaker repair
>
> I think the paper is different.
>
> Years ago, there was a sort of open paper sold for covering model 
> planes, designed to be doped and shrink a bit. That might also work.
>
> -John
>
> ==============
>
>
>> And you have a choice of brown or white...  :^)
>>
>> On Jan 15, 2012, at 11:28 AM, Moe Fretz wrote:
>>
>>> Coffee maker filters also work well.
>>
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