This is interesting.  Is there a way to tell whether the spring on top 
of the diaphragm is present, apart from dismantling the reproducer?
I have a gold plated DD reproducer, with the large round weight of the 
dance reproducers, and I can see the loading spring on top of the 
stylus bar.  The complete number stamped on the underside of the cup 
frame is F 78218 NS.  Is "LD" a designation that appears typically on 
dance reproducers, and NS the designation appearing on all Edisonics?  
If so, this would make my reproducer an Edisonic version and as such 
would not have the diaphragm top spring. I assume it would have 
originally been on an Edisonic with gold hardware under the lid, or 
else was sold as an upgrade to an existing older model DD player?  It 
came to me on a C-19 that had been out of circulation for decades.

Thanks for your insight.
Andy

On Apr 19, 2006, at 9:37 AM, [email protected] wrote:

> Hi Andy,
>
> The initial Dance had two springs, on attached to the stulus bar, and 
> one hooked to the top of the diaphragm and then to a cross bar right 
> where the sound tube is connected to the top plate. I have one that 
> only has the one spring (like the Edisonics, attached to the stylus 
> only),but has an added NS designation in the serial number along with 
> the usual LD. Steve and I think this was Edison using up existing 
> stock when the Edisonics were introduced.
>
> Bill

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