Sorry about the last post. I have a sony dn-610 which I now use as an amp. But when I had it hooked up as my main receiver, I had all speakers set to small with 80hz crossover. The eq was at 0 for treble and bass. I had my subs at half volume and the sub volume in receiver at -2.5. I did not used the auto calibration, set it with a sound meter. Always sounded good, with good bass. From what I remember, I don't think the eq took away from the sub.