Here is a Urei 6150. Another low feedback, wide open loop design. Leach inspired?. This has a bit of buzz on both channels through headphones or speakers. I believe its the layout design that causes this. All components test fine. Filter capacitors are also fine.
Buzz might be caused by this..
-There is some EMC shielding around the transformer but transformer will radiate still.
- Input shielded cables run very close next to mains wire input.
Apart from tthe buzz it actually sounds quite good. THD average..0.02% across full audio range. Bass full bodied.
Buzz might be caused by this..
-There is some EMC shielding around the transformer but transformer will radiate still.
- Input shielded cables run very close next to mains wire input.
Apart from tthe buzz it actually sounds quite good. THD average..0.02% across full audio range. Bass full bodied.
