I have an old Denon 3300 receiver that is rated at 105 watts into 8 ohms at THD .05%. The spec sheet from Denon says the receiver will accept speaker loads from 6 to 16 ohms but the maximum power rating is not provided into 16ohms. I am considering the purchase of a set of 16 ohm speakers. Will the Denon output be reduced if it is used to drive 16 ohm speakers? Is it possible to use a set of 16 ohm speakers for the fronts and 8 ohm speakers for the rears, for example?