Yes, the old Polk sirius tuner uses the same IR codes as the SCH2P and the new SRH2000. I can send you known IR codes in a document if you need. The adaptor cable that came in the box is to convert the old non-standard IR input connector to standard 2 conductor IR systems such as Niles, URC, RTI, etc. The 3 position switch on the back must be set for IR control.