From: https://www.diyaudio.com/community/threads/anyone-have-a-good-clear-schematic-of-the-mf-a100.21338/
The circuit diagram of the A1 can be found at the class-A site of Geoff Moss.
The circuit of the A100 is the same as the A1 except: 32V rails instead of 25V rails.
Idle current at 1,25 A in stead of 650 mA (the collector resistors to .22 instead of .47, and the 1M8 resistors to 2M7).
The circuit diagram of the A1 can be found at the class-A site of Geoff Moss.
The circuit of the A100 is the same as the A1 except: 32V rails instead of 25V rails.
Idle current at 1,25 A in stead of 650 mA (the collector resistors to .22 instead of .47, and the 1M8 resistors to 2M7).
Attachments
The A100 I was asking for the schematic for has just arrived. Bought used. It's perfect outside.
I opened it.
No burns on the PCB, everything seems normal (and original).
I would like to change all the electrolytic capacitors for 105° (many hours of life). I think it's good for him.
Do you have any advice other than large smoothing capacitors?
Are some caps for low ESR or do I all use normal caps? Panasonic? Any recommendations for which series? Nichicon?
Do I need to replace some other component (resistors, diodes) with something more "higher wattage"?
I thought I had read that MF had made a mistake in calculating the wattage of the components... but I don't remember whether on the A100 or A1 and which components.
Any other suggestions of things to do during the recap?
Do I need to check the values of the resistors that determine the polarization and the quiescent current?
Thanks, I would like to make this review as soon as possible and..........happily listen to it.
Thanks for any advice.
I opened it.
No burns on the PCB, everything seems normal (and original).
I would like to change all the electrolytic capacitors for 105° (many hours of life). I think it's good for him.
Do you have any advice other than large smoothing capacitors?
Are some caps for low ESR or do I all use normal caps? Panasonic? Any recommendations for which series? Nichicon?
Do I need to replace some other component (resistors, diodes) with something more "higher wattage"?
I thought I had read that MF had made a mistake in calculating the wattage of the components... but I don't remember whether on the A100 or A1 and which components.
Any other suggestions of things to do during the recap?
Do I need to check the values of the resistors that determine the polarization and the quiescent current?
Thanks, I would like to make this review as soon as possible and..........happily listen to it.
Thanks for any advice.