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M.W.Muros
Reply with quote  #1 
I sold one of my AU-111's to a gentleman in Germany. He just received it and we cannot determine the proper fuse for European 220-240 volts. The schematic is not clear, and there are no instructions in the owner's manual. We do know that he will change the internal voltage selector switch, but does the fuse remain as 4A, or is it replaced with a 2A. I recal on returning from Germany with my AU-919's, it required the 'pin' change and a different fuse.
Any assistance or advice would be greatly appreciated.
Keeper
Reply with quote  #2 
Quote:
Originally Posted by M.W.Muros
I sold one of my AU-111's to a gentleman in Germany. He just received it and we cannot determine the proper fuse for European 220-240 volts. The schematic is not clear, and there are no instructions in the owner's manual. We do know that he will change the internal voltage selector switch, but does the fuse remain as 4A, or is it replaced with a 2A. I recal on returning from Germany with my AU-919's, it required the 'pin' change and a different fuse.
Any assistance or advice would be greatly appreciated.
It's normal to use a fuse having half of rated Ampere when connected to double input AC Voltage. (Ohms law)
However, in a normal household there are always a fuse for AC outlets so the main fuse in the amp can be kept but in your case I recommend  to use a 2A slow blow fuse to be on the safe side.
M.W.Muros
Reply with quote  #3 
Thanks for the information. As I suspected as in the case of the 919's, the fuse went from 2A in Germany to 4A when I returned.
I will advise him that it appears that he will only have to change the voltage switch and replace the 4A fuse with a 2A fuse. I have also suggested he locate a AU-111 owner in Germany via this and other forums and confirm the procedure just as a precaution.
It would be a shame for him to change the voltage selector switch and the fuse, but not do something else that may be required that we do not know about. The amp in question was completely restored and I absolutely do not want anything to "go wrong" LOL!!!
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