Nice sub. My understanding is that YPAO doesn't affect subwoofers, and the SB4000 doesn't have automatic equalization, so to use the PEQs you really need a measurement system like REW (you can search this site for threads about how to set it up) or OmniMic, which is a proprietary full solution from Parts Express. There are other alternatives too. Tuning by ear with test tones is possible, but crude and subject to trial and error.