Originally Posted by BassmanPaul
Most amplifiers have bias controls of one sort or another.
And also most of the distortion and overheating problems can be remedied by just adjusting the said bias. Before the damage occurs.
The the "modern" way of thinking that "only tube power amps with A/B output sections" (if even those
), can and need to be biased has led to the idea that SS output sections aren't biased at all, nor do they need the bias to be checked and adjusted periodically.
SWR is a prime example of the discretes circuit topology that absolutely needs the periodical biasing.
Blessing of a sorts, since one can usually buy a "malfunctioning" and overheating amp from a clueless seller for peanuts.
In all fairness, I suspected this thread to have the actual bias procedure, just like the one for the SM family, but the mere mention of it's importance will probably have to do