When did SWR start making this particular bass amplifier - I asssume it is a solid state without tube driver stage? Anyone have a schematic for the SW400? Much appreciated if you could email it to gbonosurf@yahoo.com.
Okay, it's a SM400 early model (pre92') and the owner claims the PT is toast. Found a schematic on Schematic Heaven - anyone know what upgrades were made to this model after 91?
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