A couple years ago I built a 2.1 system for my younger brother. The sub used the SA70 and SD270 in 3 cubes tuned in the vicinity of 30Hz. The sub now only gives a 60hz hum even when fed a signal, and I suspect an issue with the amp.
Is this a known issue with the SA70, and if so is it repairable? Otherwise, if I just replace the amp with a new SA70 what are the chances of the amp failing again?
Comments
Ron