CTLR RPTR SAYS THERE WAS AN NMAC ON THE FINAL APCH TO RWY 25L DUE TO SMA (X) NOT RPTING A 4 MI FINAL AS REQUESTED. SMA (Y) WAS ON A L BASE FOR RWY 25R AND APPARENTLY SAW AND AVOIDED THE SMA (X). THE SMA (X) ALSO LANDED WITHOUT A CLRNC FROM THE TWR.

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NMAC JUST E OF DEER VALLEY ARPT ON FINAL FOR RWY 25L. CENTURION INBOUND FROM THE E MAKING A STRAIGHT IN APCH AND WAS TOLD TO RPT A 4 MI FINAL FOR RWY 25L. A CHEROKEE WAS ON L DOWNWIND FOR RWY 25R. TFC WAS ISSUED TO CENTURION ALSO INBOUND FROM THE E. DEER VALLEY LCL LISTENS TO 2 FREQS AT THE SAME TIME AND THIS CAUSES MUCH CONGESTION. I BELIEVE THIS WAS A CONTRIBUTING FACTOR. AFTER TFC WAS ISSUED TO CENTURION THE WORD 'LEFT' IS HEARD ON THE TAPE. THIS MAY HAVE BEEN CENTURION RPTING '4 MI FINAL FOR RWY 25L.' CTLR THOUGHT SOMEONE SAID 'BLOCKED SO REISSUED TFC. CENTURION RESPONDED 'ROGER LOOKING FOR TFC FROM E.' THE CHEROKEE TURNED L BASE FOR RWY 25R. CENTURION IS ON FINAL BUT CTLR NEVER RECEIVED RPT OF 4 MI FINAL. CHEROKEE AND CENTURION MISS BY UNKNOWN NUMBER OF FT ON FINAL FOR RWY 25L. CENTURION LANDED WITHOUT A CLRNC. CHEROKEE SAW THE CENTURION. I DON'T BELIEVE THE CENTURION EVER SAW THE CHEROKEE. CTLR WAS BUSY DURING THIS PERIOD. CENTURION SHOULD HAVE RPTED ON FINAL AGAIN UNTIL CTLR ACKNOWLEDGED. HE SHOULD NOT HAVE PROCEEDED INBOUND AND THEN LANDED WITHOUT A CLRNC.