You could hook up all four speakers to the receiver if the receiver has 'A' and 'B' speaker terminals. Then you could use all four speakers simultaneously if you have a button that can enable A and B together. It wouldn't be wise to hook up all 4 speakers to one set of speaker terminals on your receiver, as I think this puts too much load on the receiver. But that Kenwood amplifier will be useless without a preamplifier to control it.