This reply is ONLY a year late but I just now noticed it. I still have the FM300 amplifier, tore it apart, drew a schematic for it, made the repairs, now I just need to put all back together. There were only a few bad parts, all in the housekeeping circuits, none in the audio circuitry. The comparator IC in the housekeeping circuit was an NTE part but figured out it was probably an LM339 originally. The speaker relays are the last piece of the puzzle, need to retro fit something in place of the originals.
Craig
Craig
Hello IIwhtt,
One year that has passed, but it's still relevant.
If I understand correctly, you have to do your own pattern,
given the limited information on this brand.
When you have finished, is it possible to give you have your opinions on this amp, even compared with the Sumo, if you have one.
Again thank you for the settings of Sumo, now it's been over a year since it works perfectly well (at about 1.5 ohm), no problem.
After trying a few transistors instead of sa818.sc1628, I gave them, and this is by far the best sound.
Mr.Bongiorno was electronics, I do not.
Stefano
One year that has passed, but it's still relevant.
If I understand correctly, you have to do your own pattern,
given the limited information on this brand.
When you have finished, is it possible to give you have your opinions on this amp, even compared with the Sumo, if you have one.
Again thank you for the settings of Sumo, now it's been over a year since it works perfectly well (at about 1.5 ohm), no problem.
After trying a few transistors instead of sa818.sc1628, I gave them, and this is by far the best sound.
Mr.Bongiorno was electronics, I do not.
Stefano
