[Hammarlund] nuvistaplug mod for sp600?

[Roy Morgan]

At 08:07 PM 12/28/2005, Eugene Hertz wrote:
>... the nuvistaplug mod for the sp600....Does one buy a product called a 
>nuvistaplug that contains two 6DS4's plus 3 resistors and 2 caps?

I certainly do whenever I can buy one. But the one and only one I was ever 
able to buy was about 15 years ago. I have seen none since.

>Or does one simply purchase 2 6DS4's and construct the circuit in the 
>article on some kind of tube plug in connector?

I do not do that because I have one device here.  If you don't have one, I 
suggest you build one.

>...I don't know if one can actually acquire the whole thing built.

If you ever can get one, do it.

>Does anyone know if this same circuit can be built with 6CW4's?

Yes, it can. The performance may be somewhat less, however, due to the 
difference in tube characteristics.

>Anyone done this mod? Is it a noticeable improvement?

I have not tried my Nuvistaplug yet.  Once I overhaul an SP-600, I will though.

Roy

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