[Amps] SB-220 Transformer Problem

[garyschafer@attbi.com (Gary Schafer)]

Richard wrote:

>
> >> I would phone Peter W. Dahl and order a custom replacement with a tapped
> >> secondary in lieu of a tapped primary since it makes for a more efficient
> >> transformer design.

Rich,

Why is a tapped secondary better than a tapped primary?

Thanks
Gary  K4FMX