[AMPS] SB220 & 4-400s

[measures]

>
>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


--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com