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Sunn SR 6100 power mixer

hey any body Im looking for an owners manual for 1980s SUNN SR 6100 power mixer amp it has 6 channels and I believe it is 300 watts max and it supplies 100 watts to the mains. I also have two 15" main speakers running off of it, its super loud but I would like to know the capabilities of it. My EMail is Jsexualnilla@aol.com thanx...