In Reply to: RE: output power posted by Bromo33333 on July 12, 2014 at 06:42:36:
FWIW, load plays a huge role in the operation of a class A amplifier with a higher output impedance. If there is an output transformer, loading the transformer on a tap lower than the tap is set up for (4 ohms on the 8 ohm tap) can cause the amplifier to not be operating in the class A region.
This of course is true of OTLs as well. The M-60 can operate class A, or it might be AB2, depending entirely on the load impedance.
There is also the issue of efficiency. If the load is lower impedance, a portion of the power generated by the output section will not be transferred to the load but instead dissipated by the output section itself. This causes it to run hotter.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: output power - Ralph 09:49:47 07/14/14 (0)