>To add one more opinion, I also feel that the Heath SB220 is a
>classic, simple yet elegant design, which is timeless. While the
>green two tone cabinet reflects last century ergonomics, the circuit
>is quite workable. With the mods available to improve the input
>tuning Q (for solid state drivers), inrush limiting or step start on
>the HV transformer, the better bleeder resistors, better rectifiers,
>a standby switch,
*** With a stepstart and current-limiting filament transformer, the
SB-220 may be switched off and on as often as needed without damage.
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|