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[AMPS] SB220 & 4-400s

To: <amps@contesting.com>
Subject: [AMPS] SB220 & 4-400s
From: 2@vc.net (measures)
Date: Wed, 4 Apr 2001 22:00:37 -0700
>
>All Hail...!!  Oh Enlightened ones...!!
>
>    A friend of mine has an old SB220... The 3-500s have departed for
>Valhalla, but we have a number of 4-400As...(allegedly) good pulls.
>  If we use the 4-400s instead of 3-500s (both grids grounded), what, if
>any, circuit changes should be made to cope with the new scenario???
>  Any suggestions gratefully received..

In my SB-220, the ZSAC with 4-400s was a bit low with the stock 2900v.  
3500v would have been better.  Adding a c. 200v transformer to the hv 
transformer sec. should have fixed the problem.  There is plenty of room. 
 

cheers. John

-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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