sansui B1000 schematic wanted

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HY! I don't want to make another threat so i put a question here: Can sansui b1000 work on 4 ohm without problem? On back write minim 8 ohm, but i think when i put 4 speakers at 8 ohm each the impendance from each chanel will be 4 ohm. So can i use only 2 speakers 1 each chanel at 4 ohm each?
Thanks in advance!
 
found out

what was basicly wrong with that amp got it fixed and all seem to be working properly

apply sine wave 1000 hz check my scope and just a bit before cliping i noticed a small peak formated in the upper part of the waveform tha looks like a diode .... only in the upper part ...and only at levels just a bit before cliping ....

any ideas what this might be ????
 
looks like that

looks like that
 

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